JPH03214969A - Picture reader - Google Patents

Abstract

PURPOSE:To confirm or recognize the content of picture processing by providing a picture processing means applying picture processing based on at least one of designation attribute data and discrimination attribute data, and an output control means outputting a picture data by a prescribed picture element number and an attribute data corresponding to picture elements of the relevant pre scribed number alternately in the case of picture data output. CONSTITUTION:A discrimination attribute data alpha0 obtained by automatic discrim ination of binary attribute and a designation attribute data a0 to control binarizing processing are fed to a data selection section 286 and an output data DSEL0 is decided in response to the data a0. A negative processing section 287 outputs a binarized picture data inputted from a selector 285 when the designation attribute data a1 is logical 0 and outputs an inverted binary picture data when the data a1 is logical 1. In the case of data output from the negative processing section 287, data are outputted in a form of 8-picture element parallel picture data VIDEO1-8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image reading device that performs image processing on a signal obtained by reading a document and outputs an image signal corresponding to the document. [Conventional technology] Conventionally, digital copying machines, facsimile machines, and OCR
(optical character reader), optical filing system,
An image that reads a document by dividing it into pixels as an image input means for devices such as various display devices that create, store, and display images using a combination of dots (i! elements) of a fixed size. A reading device (Image League) is used. In this type of image reading device, the read image information is quantized and treated as digital image data, so various image processing can be easily performed. Generally, it is configured to perform image processing to improve image quality, such as edge enhancement to make the image clearer, smoothing to make the image more natural, and image processing to edit the image. has been done.

Image editing includes trimming to extract only a specific area within a document, masking to whiten out a specific area, reverse to invert the negative and positive (black and white inversion), and color conversion to replace a specific color with another color. etc. are known.

For example, in an image reading device that allows image editing,
As shown in Japanese Unexamined Patent Publication No. 181570/1989, an attribute memory is provided for storing attribute data corresponding to the content of image processing, and this attribute memory stores information for each divided area in which the manuscript is divided into fine sections. Attribute data is stored in advance, and image processing based on the attribute data is executed in real time as the image is read.

According to this, the content of image processing can be specified for each segmented area, and complex and diverse image editing is possible. By the way, as is well known, in image processing (hereinafter referred to as "binarization processing") for binarizing multi-valued data according to the density of each pixel of a document, from the quality of the reproduced image,
In general, so-called simple binary processing, which compares the multivalue level of one pixel with a certain threshold level, is suitable for line images such as characters, and dithering and other methods are suitable for halftone images such as photographs. Pseudo gradation processing using error diffusion method is suitable.

Therefore, when reading a document that contains a mixture of line images and halftone images, the It is necessary to switch the binarization process. In order to automatically switch the binarization process, discriminating means for discriminating the binarization attribute using various methods disclosed in, for example, Japanese Unexamined Patent Publication No. 62-39978, etc., has been conventionally incorporated. There is an image reading device. Note that an image reading/reading device that is capable of color editing such as color conversion has a built-in means for determining the color attributes of an image.

[Problem to be solved by the invention]

Conventional image reading devices output only image data that has been subjected to image processing, and do not output attribute data that indicates the content of the image processing. Therefore, there is a problem in that an operator or various devices that input image data cannot easily check or recognize what kind of image processing has been performed on the image data from the image reading device. ．． That is, especially when checking the state of image processing based on the discrimination results inside the image reading device, such as binarization processing, the operator should check the image data after obtaining the image based on the image data using the printer or display device. By closely comparing and observing the image and the original, it is necessary to indirectly check whether there are any errors in the discrimination results in each segmented area, which is extremely troublesome.

In addition, for example, an image reading device and a host computer (
In OCR, the host determines whether the image data corresponds to a white part due to masking or a blank part of the original, especially when the value of the image data is "0" indicating a blank part. For this recognition, the image data from the image reading device is once developed on the image memory, and the coordinates are used to associate the address (coordinates) of the image memory with the designated area (designated coordinates) for image editing. calculation must be performed.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an image reading device that makes it possible to confirm or recognize the content of image processing without providing a new signal output line.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides an image reading device configured to read a document by dividing it into pixels, perform image processing on the obtained signal, and output image data corresponding to each pixel. , an attribute storage means for storing designated attribute data for image processing generated for each segmented area into which the manuscript is divided; and determining a specific attribute for each segmented area in accordance with reading of the manuscript; an attribute discriminator that generates discriminant attribute data; an image processing means that performs image processing based on at least one of the designated attribute data and the discriminant attribute data; The present invention is characterized by comprising an output control means that alternately outputs image data and attribute data corresponding to the predetermined number of pixels.

[For production]

The attribute storage means stores designated attribute data for image processing generated for each divided area of the document.

The attribute determining means determines a specific attribute for each segmented area as the document is read, and generates determined attribute data.

The image processing means performs image processing based on at least one of the specified attribute data and the discrimination attribute data.

The output control means alternately outputs image data for a predetermined number of pixels and attribute data for image processing corresponding to the predetermined number of pixels when outputting image data corresponding to each pixel of the subdivided document. do.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a cross-sectional front view showing the general configuration of the image reader 1. The image reader 1 has a document table glass 2 attached to the top surface of a rectangular parallelepiped housing, on which a document of up to A3 size can be placed, and the placed document is held down by a document cover 3. ing. A reference pattern 14 made of a white image for shading correction is provided at the front end of the document platen glass 2 in the scanning direction.

Inside the casing, there is an optical system arranged to be able to scan the original image in the direction of arrow M5 (sub-scanning direction) below the original platen glass 2, and an electric circuit that generates image data according to the density of the original image. A section 12 is provided.

The optical system includes an exposure lamp 4, a reflecting mirror 5, a first slider 13 having a mirror 6, a second slider 13a having a mirror 7.8, a main lens 9, and the like. 1st
When the moving speed of the slider l3 is V, the second slider 13a is driven and controlled to move at a speed of v/2.

The scanning light passing through the main lens 9 is incident on the image sensor 10 attached to the support member 11, and is converted into an electrical signal. The image sensor 10 is composed of a plurality of CCD chips arranged continuously in the main scanning direction, and is capable of reading an original at a resolution of 400 pixels/inch. Each CCD chip has a large number of light-receiving elements arranged in a row, and each light-receiving element is divided into three regions, one divided region being R (red), G (
A spectral filter is provided on the surface of each light-receiving element so as to receive light of one of three colors: green) and B (blue). One light-receiving element corresponds to one pixel of the original image, and each light-receiving element outputs a photoelectric conversion signal to the electric circuit section 12 according to the intensity of reflected light for one color of the pixel.

FIG. 1 is a block diagram of the electric circuit section l2.

The electric circuit section 12 includes a color separation section 21 that separates the photoelectric conversion signal from the image sensor IO into R, G, and B color signals and performs predetermined amplification, and A/D conversion (quantization) of the analog signal of each color. ) and outputs 8-bit image data Dm7 to Dm0, and a shading correction unit 23 to correct unevenness in the amount of light in the main scanning direction of the image data Dm7 to Dm0 and variations between bits of the image sensor lO.
, an image discrimination unit 25 that discriminates binarization attributes and color attributes, a density conversion unit 26 that performs density level adjustment and T conversion according to the density characteristics (T characteristics) of externally connected equipment, and an image editing process.
An image processing section 28 that performs image processing including value conversion processing, an output control section 29 for controlling data output, an attribute memory 30 that stores designated attribute data a2 to 0 (described later), an attribute data output control section 31, and a clock generation unit. A circuit 4l, a line memory 24 that stores one line of image data Dm17 to Dm10 output from the shading correction section 23, a synchronization signal generation section 40 that outputs various synchronization signals to each section, and an exposure lamp 4.
The lamp controller 4a controls the lighting of the lamp, a driver 16a that drives the scanner motor 16 for scanning, and a CPυ20 that controls all of these components.

The CPU20 has a ROM2 that stores processing programs.
0a, registers 20b and R for temporary storage of various flags and status data during program execution;
Built-in AM20c.

The CPU 20 communicates with an external host device equipped with operator operation means to exchange various commands (control instruction code data) and data indicating the operating state (status) of the image reader 1. Based on the received command, designated attribute data a2 to a0 specifying image editing and disulphization processing are generated prior to reading the original, and this is stored in the attribute memory 30. Note that the synchronization signals outputted by the synchronization signal generation unit 40 include a horizontal synchronization signal Hsync outputted for each main scanning line, a pixel clock signal SYNCK that serves as a reference for data transmission timing for each pixel, and the image reader 1 There is an enable signal VD indicating the valid period of data output from the . FIGS. 3(a) and 3(b) are diagrams showing the configuration of the attribute memory 30. As shown in FIG. 3(b), the attribute memory 30 uses the CPU 20 for each segmented region E, which is composed of an 8×8 donma matrix obtained by segmenting the image G into 8-pixel units in the main scanning direction and the sub-scanning direction. Specified attribute data a2 generated by
It is configured to be able to store 0 to 0.

In the image reader 1, specified attribute data aO, al
, a2 are data for specifying binarization processing, negative/positive inversion, and trimming, respectively.

FIG. 4 is a Pronk diagram of the image discriminator 25.

The image discrimination section 25 includes a binarized attribute discrimination section 251, a color attribute discrimination section 252, a discrimination attribute data output section 253, and the like. The binarization attribute determination unit 251 determines the binarization attribute for each segmented area E, that is, is the segmented area E a character image? 1. Determine whether the image corresponds to a halftone image or a halftone image, and show the determination result 1
Bit discrimination attribute data α0 is output. Further, the color attribute determination unit 252 determines whether or not the classification nod area E corresponds to a specific color designated as a color editing target, and outputs 1-bit determination attribute data α1.

In addition, in order to enable attribute discrimination for each segmented area E, the image discrimination unit 25 includes image data Dm17 to Dm17 for 8 lines.
A line memory (not shown) for storing 10 is provided. The discrimination attribute data α0 is set to "r■" when the segmented area E to be discriminated corresponds to a character image, and is set to "1" when it corresponds to a halftone image. In addition, the discrimination attribute data α
1 is set to "1" when the segmented area E to be determined corresponds to a specific color, and "0" when it corresponds to a color other than the specific color.
It is said that FIG. 5 is a block diagram of the image processing section 28.

The image processing section 28 includes a filtering section 281, a trimming/masking section 282, a simple binarization processing section 283, a halftone processing section 284, a data selection section 286, a selector 285, a negative processing section 287, etc. There is. The image processing unit 28 receives image data D from the density conversion unit 26.
m27 to m20 are input serially in the order of pixel arrangement. The input image data Dm27 to Dm20 are first subjected to processing for improving image quality, such as edge enhancement and smoothing, in the filtering unit 281. Next, in the trimming/masking unit 282 according to the specified attribute data a2,
When the data a2 is "1", it is forcibly set to "0" corresponding to the blank part as a masking process. data a2
When is "0", the data is output as is from the trimming/masking unit 282 (data through).

The image data output from the trimming/masking section 282 is binarized by a simple binarization processing section 283 and a false halftone processing section 284, respectively, and binary image data DA, D are obtained.
B is simultaneously input to the selector 285. The selector 285 selects and outputs either the binary image data DA or DB according to the output data DSELO from the data selection section 286. The data selection unit 286 includes the above-mentioned discrimination attribute data α obtained by automatically discriminating the binarized attribute.
0 as well as designated attribute data aO for controlling the binarization process, and the value of the output data DSELO is determined according to the value of this data aO. That is, if the data aO is "0", the discrimination attribute data α0 is output as is as the output data DSELO, and the data aO is "0".
1'', data obtained by inverting the discrimination attribute data α0 is output. That is, in the image processing section 28, the data aO
When is "0", the external designation of binarization processing is defaulted, and binary image data based on the automatic discrimination of the binarization attribute by the image discrimination unit 25 is output, and the data aO
When is r1, binary image data that has been subjected to a binarization process that is opposite to the result of automatic discrimination of binarization attributes is output. If the designated attribute data a1 is "O", the negative processing unit 287 outputs the binary image data input from the selector 285 as is, and if the data al is "1", it outputs the binary image data with the values reversed. Output the data. When data is output from the negative processing section 287, it is sequentially output in the form of parallel west image data V I DEO 1 to 8 of 800 elements each. Note that the image processing unit 28 includes 8 lines of image data Dm2 in order to enable image discrimination for each segmented area E.
A line memory (not shown) for storing numbers 7 to 20 and 8-bit serial/parallel conversion means are provided. FIG. 6 is a block diagram of the attribute data output control section 30. The attribute data output control unit 30 outputs the discrimination attribute data αO. α
1 and specified attribute data a2 to 0 to output 5-bit attribute data a4 to 0. Attribute data a4 and a3 are discrimination attribute data α0, respectively.
．． Corresponds to α1. FIG. 7 is a block diagram of the output control section 29, and FIG. 8 is a timing chart showing the output operation of attribute data a4 to a0. The output control unit 29 includes a frequency divider 401 that outputs a signal 1/8·Hsync obtained by dividing the signal SYNCK by 1/8, a latch circuit 402 that latches the signal VD according to the signal Hsync, and output control data from the CPU 20. The output is controlled by the selectors 403 and 404 which respectively output the output control signals SO and S1 according to CO~1, and the signals so and si, and the image data V I DEO 1~8 or the attribute data a4~0 are respectively output as the output data DATA. It consists of data latch circuits 405, 406, etc. for selection. The signal 1/8・Hsync is sent to the data latch circuit 405,
406 clock terminal (CK), selector 4
04 as it is as a selection input, the selection input is inverted by an inverter 407 and added to the selector 403, and is outputted to the outside as an output synchronization signal DSYNC via an inverter 408. When signal VD becomes active ('LJ), frequency divider 40
1. Signal 1/8 from selectors 403 and 404 respectively
・HS7nc, So. 31 is output, and the output data DA
TA output becomes possible. The output operation of the output data DATA will be explained with reference to FIGS. 8 and 1. When scanning of the original is started, image data Dml7 to Dml10 are input to the image discrimination section 25 and the density conversion section 26 in order from those corresponding to the first pixel of the first line. As described above, in order to perform image discrimination for each divisional nod area E spanning eight lines, the image discrimination unit 25 stores eight lines of image data Dm17 to Dm10. The output of the image discriminator 25 during scanning up to this point is invalid data. In Figure 8, invalid data is shaded. Therefore, the signal VD is set to "L" in synchronization with the signal Hsync indicating the start of scanning on the 9th line,
From the time when the image data Dm17 to lO for the first 8 pixels of the 9th line are input from the image discrimination unit 25,
In synchronization with the signal 1/8.HSync, the discrimination attribute data α0. α1 is output. The attribute memory 30 outputs specified attribute data a2-0 in synchronization with the output of the discrimination attribute data α0, α1.

On the other hand, since a delay of 8 dots occurs in the density conversion section 26, the image data Dm27-20 of the 9th line is input to the image processing section 28 with a delay of 8 dots relative to the image discrimination section 25. The image processing unit 28 also processes 8 as described above.
Since a line delay occurs, the image processing for the first line of 100 image data Dm27 to Dm20 is completed when the ninth line of image data Dm27 to Dm20 is input. Furthermore, in the image processing unit 28, a delay occurs due to serial/parallel conversion, and after an additional 8 dots delay from the input point of the 9th line, the image data VIDEO 1 to 8 corresponding to the 1st line are grouped in parallel every 8 pixels. Output.

The attribute data output control unit 3l outputs image data VIDEO1.
Attribute data a4 to 0 in synchronization with the output of ~8
Output.

Image data V I DEO 1~ output in this way
8 and attribute data a4 to a0 are each output control unit 29.
The data latch circuits 405 and 406 allow the signal 1/8
-Latched at the rising edge of Hsync. However, in the data latch circuits 405 and 406, the latch data is not always output from the output terminal (Q), and the outputs are the signals So and SL according to the total 2-bit output control data CO~1 from the CPU 20. (active low). That is, when the output control data Co and CI are both "0", the signal SO is set to "L" (ground level),
The signal S1 is set to 'HJ (V c C l/H71/), and the data latch circuit 405 becomes ready for output.
The output terminal of the data latch circuit 4o6' becomes in a high impedance state. As a result, from the output control section 29,
Image data VI DEO as output data DATA
1 to 8 are output in scanning order.

Further, when the output control data co is "1" and the output control data CI is "0", the signals SO and Sl are set to rH and "L", respectively, and the output data DATA
Attribute data a4 to a0 are sequentially output as . Furthermore, when the output control data CO is "0" and the output control data C1 is "1", the signals SO, Sl
is rH or "L" according to the signal 1/8・Hsync
As output data DATA, image data VI
DEO 1-8 and attribute data a4-0 are output alternately. In other words, in the image reader 1, by setting the output control data CO and C1 according to the command specification from the host device, the image data V I DE
O To output 1 to 8, output attribute data a4 to 0 for correcting area designation in image editing, or display the image and its attributes at the same time to confirm image discrimination. The output can be selected depending on the purpose of use of the output data DATA and the data processing format of the received example, such as alternately outputting the image data VIDEO 1 to 8 and the corresponding attribute data a4 to 0. ．． Note that, as shown in FIG. 8, in the image reader 1, image data V I DEO 1 to 8 and attribute data a
In the case of outputting 4 to 0, both data are output alternately at half the cycle of the case of outputting only image data V I DEO 1 to 8, so the attribute data a4 to
Outputting 0 does not extend the output time of image data D1 to D8. Further, the attribute data a4-0 are outputted via the same signal line as the image data VIDEO1-8,
There is no need to provide a dedicated signal line for outputting attribute data a4-0. Next, the operation of the image reader 1 will be explained with reference to flowcharts shown in FIGS. 9 to 18.

FIG. 9 is a main flowchart schematically showing the operation of the CPU 20. When the power is turned on and the program starts, first,
Perform initial settings in step #l. In step #2, the presence or absence of a command from the host device is checked.

If there is a command, the type of command is determined (step #3), and depending on the type, reading processing (step #4) is performed.
Reading mode specification processing (step #5), attribute specification processing (step #6), output data specification processing (step #7)
). Thereafter, other processing (step #8) is executed, the process returns to step #2, and the processing from step #2 to step #8 is repeated. FIG. 10 is a flowchart of reception processing, and FIG. 11 is a flowchart of transmission processing.

These routines are interrupt routines and are executed at appropriate times in response to access from the host device.

In the reception process shown in FIG. 10, first, code analysis of the received signal (step #1l) is performed, and step #l2
If reception of the command is confirmed, the received command is stored in a predetermined area in the register 2Ob (step #13).

If the received signal requests status notification (step #14), data indicating the status such as standby state or wait state is read from the register 20b and transmitted to the host device. Furthermore, if the received signal does not correspond to any of the predefined commands and status requests, code data indicating a reception error is transmitted (step #16). Waits until the next transmission is possible after completion of the transmission (step #21), and sets the code data to be transmitted in the register 20b (step #22). Thereafter, in step #23, the presence or absence of code data to be subsequently transmitted, that is, whether or not transmission is necessary, is checked, and if transmission is necessary, the process returns to step #21. FIG. 12 is a flowchart of the initial setting of step #1 in FIG. 9. First, rWAITJ is set as a status indicating that preparation for read scanning is in progress. That is, rWAI is stored in the status area in the register 20b.
Store the data corresponding to T, (step #31
), Next, in step #32, a self-test is performed to check whether each part operates normally.

In step #33, the presence or absence of an abnormality is checked, and if an abnormality is found, the process moves to step #37 and an inoperable code is sent to the host device. If there is no abnormality, the process proceeds to step #34, where each part is initialized. At this time, "0" is written into the attribute memory 30 as designated attribute data ao, at, a2. Therefore, if the designated attribute data a2 to a0 are not rewritten thereafter, the image processing unit 28 will not perform image editing such as trimming and negative/positive reversal, and
The value conversion process will be performed based on the discriminant attribute data α0. Further, in the density conversion section 26, settings are made so that the standard density is obtained, and in the output control section 29, a selector is set so that the image data VIDEO 1 to 8 and the attribute data a4 to 0 are output alternately. Inputs 403 and 404 are selected. After these initializations, in step #35, the first slider 13 is moved to the home position, and when the movement is completed, in step #36, the status is changed from "WAITJ" to rREADY, which indicates a standby state. The figure is a flowchart of the above-mentioned reading process. First, rBUs indicating that the status is being read
YJ (step #41), and expose lamp 4 is turned on (step #42). Next, turn on the scanner motor 16 (step #43).
, waits for the first slider 13 to reach the shading position, that is, the position directly below the reference pattern 14 (step #44). When the first slider l3 reaches the reference pattern l4, the reference pattern 14 is read for shading correction,
The reference image data (white data) is stored in the line memory 24 (step #45). Next, in step #46, the first slider 13 waits for the first slider 13 to reach the leading edge position of the document, and in step #47, the synchronization signal generator 40 is turned on to output a synchronization signal. As a result, each part operates according to the synchronization signal, and as described above, after the start of scanning on the 9th line, valid image data V I DEO 1 to 8 and attribute data a4 to 0 are alternately output. Wait until the scanning of the original is finished, that is, the first slider 13 reaches the rear end position of the original (step #48), turn off the synchronization signal generator 40 (step #49), and turn off the scanner motor l6 ( Step #50), and turn off the exposure lamp 4 (Step #51). Then, the scanner motor 16 is reversed so that both sliders 1
3. Return 13a (step #52) and wait for the first slider 13 to return to the home position (step #5
3) and turn off the scanner motor 16 (step 954L).
Finally, in step #55, the status is changed to rREADY.
Suppose that FIG. 14 is a flowchart of the reading mode designation process in step #5 of FIG. In step #61, the status is set to rWAITJ, and in step #62, the parameters included in the command are checked, and the concentration is specified according to the parameters (step #62).
63) or other specifications such as specifying the output target device (step #64). And step #6
5 to set the status to rREADY. Return to

FIG. 15 is a flowchart for specifying density in step #63. In step #71, it is checked whether the density specification method is automatic. If the designation method is other than automatic, the process moves to step #74, where the density conversion unit 26 is set in accordance with the parameters sent from the host device based on the designation operation by the operator.

If automatic is determined in step #71, preliminary scanning is performed to detect the density of the document in step #72.
Image data Dm17 sequentially stored in line memory 24
Load ~10 into RAM20c at the appropriate time. Then, in step #73, the density of the original is detected based on the data in the RAM 20C, and then the process proceeds to step #74, where the density conversion unit 26 is set according to the detection result. FIG. 16 is a flowchart of the attribute specification process in step #6 of FIG. First, set the status to rWAITJ (step #81
), check whether the specification is correct or not (step #82). If the specification is incorrect, for example, if an area outside the reading range is specified or if there is an error in the order of coordinate specification, proceed to step #85 and write the error code to the host device! Send to. If the specification is correct, execute attribute data write processing to write the specified attribute data aO, al, a2 to the attribute memory 30 (step #83), and set the status to rRE.
ADY, (step #84). FIG. 17 is a flowchart of the attribute data writing process in step #83. In step #9l, check the type specified from the host device, and step #92 to step #98 according to the type.
Execute each process. That is, when automatic discrimination of binarization attributes is specified, in step #92, for the specified segmented area,
Set the specified attribute data aO to "0". If the binarization attribute is specified in advance, step #93
Then, for the specified segmented area, the specified attribute data a
Let O be "l". If a positive designation, that is, a designation not to perform black and white reversal, is made, in step #94, the designated attribute data al is set to "0" for the designated segmented area. On the other hand, if a negative designation, that is, a designation to perform black and white reversal, is made, in step #95, the designated attribute data al is set to "1" for the designated segmented area. If trimming is specified, step #9
In Step #6, the designated attribute data a2 is set to "l" for areas other than the designated segmented area E, and if masking is specified, the designated attribute data a2 is set to "l" for the designated segmented area E in step #97. 1”. If trimming/unmasking is specified, in step #98, the specified attribute data a2 is returned to "0" for areas other than the specified segmented area E. FIG. 18 is a flowchart of the output data designation process in step #7 of FIG.

In this routine, the type of output data DATA is first checked in step #101, and steps #102 to #104 are performed depending on the type.

If output of only image data V I DEO 1 to 8 is selected, in step #l02, output control data C
Both O and CI are set to ``0''. If the output of only attribute data a4 to a0 is selected, step #103 is executed, the output control data CO is set to "1", and the output control data C1 is set to "0". In addition, image data VIDEO 1 to 8 and attribute data a4
If both outputs of ~0 are selected, step #l
At 04, the output control data CO is set to "0" and the output control data CI is set to "1". According to the embodiment described above, the discrimination attribute data α0 corresponding to the discrimination result of the binarized attribute is output, so when character recognition is performed on the host device, the character image is determined based on the discrimination attribute data α0. Recognition processing can be performed only on the segmented area E corresponding to , which improves recognition efficiency. Also,
When the image reader 1 is used as a filing system or facsimile image reading means, data such as data compression left in each line image or halftone image for image data VIDEO 1 to VIDEO 8 is extracted based on the discrimination attribute data α0. It becomes possible to perform processing. [Effects of the Invention] According to the present invention, without providing a new signal output line,
It becomes possible to confirm or recognize the details of image processing performed on image data.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an electric circuit section according to the present invention, FIG. 2 is a cross-sectional front view showing a schematic configuration of an image reader, and FIG.
The figure shows the configuration of the attribute memory, Figure 4 is a block diagram of the image discrimination unit, Figure 5 is a block diagram of the image processing unit, Figure 6 is a block diagram of the attribute data output control unit, and Figure 7 is the output A Bronok diagram of the control section, FIG. 8 is a timing chart showing the output operation of attribute data, and FIGS. 9 to 18 are flow charts showing the operation of the image league. DESCRIPTION OF SYMBOLS 1... Image league (Ii image reading device), 25... Image discrimination part (attribute discrimination means), 28... Image processing part (image processing means), 29... Output control part (output control means) ), 30
...Attribute memory (attribute storage means), a O, a
1, a 2-...Specified attribute data, a4~0...
Attribute data, αO, α1...Discrimination attribute data, VI DEO 1-8...Image data, Dm27-
20...Image data E...It is a segmented area. (signal),

Claims (1)

[Claims] (1) In an image reading device configured to read a document by dividing it into pixels, perform image processing on the obtained signal, and output image data corresponding to each pixel, each segmented area into which the document is divided. Attribute storage means for storing designated attribute data for image processing generated in each case; and Attribute determination means for determining a specific attribute for each of the divided areas in accordance with reading of the document and generating discriminating attribute data. and an image processing unit that performs image processing based on at least one of the specified attribute data and the discrimination attribute data, and when outputting the image data, image data for a predetermined number of pixels and the predetermined number of pixels are An image reading device comprising: output control means for alternately outputting corresponding attribute data.