JPH0289664A - Image processing device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing device for a digital copying machine, printer, etc.

[Conventional technology]

FIG. 11 is a diagram showing image data 111 that has been hollowed out (hollowed portion 112), but conventionally, as shown in the image data 131 of FIG. was adopted.

[Problem to be solved by the invention]

However, in the above-mentioned conventional technology, it is difficult to distinguish between hollow images and other images in binary image data that has been hollowed out, and furthermore, the technique of simply filling in the middle is susceptible to noise components and solid components. Ta.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image processing device that can perform filling without being influenced by noise components or irregular components with a simple circuit configuration.

[Means to solve the problem]

For the above purpose, the present invention provides a binary image input device that inputs digital image data, a fill-in data generation device that generates fill-in data based on input pixel values, and a data control device that controls the above two data. It is characterized by being equipped with a device.

[Effect]

In the present invention, in order to convert a hollow image into a filled image, digital binary image data is input, a hollow width value is set in advance, and the same width as the hollow width value is detected. Then, if it is an odd number, fill in the middle data with “1”.
), set it to "0"("L") when it is an even number, performs a logical sum with the input image data, and outputs the result, thereby filling in the middle of the hollow image.

〔Example〕

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

FIG. 1 is a block diagram of an image processing device according to an embodiment of the present invention, in which 1 is a binary image input device that inputs digital image data, and 2 is a binary image input device that generates middle fill data based on the input pixel values. 3 is a data control device that controls the above two data. The signal S1 from the filling data generation device 2 and the signal S2 from the binary image human-powered device 1 are selectable.

In the present invention, as described above, digital binary image data is input, a hollow width value is set in advance, and when the same width as the hollow width value is detected, the hollow filling data is changed to "1" for odd numbered data.
” (“H”) and “0” (“L”) for even numbered
''), and performs a logical sum with the input image data and outputs the result to fill in the middle of the hollow image.The hatched portion 31 of the pixel shown in FIG. 3 indicates the hollow width value.

In this embodiment, the set hollow width value is set to, for example, 8 pixels. The input binary image data is transferred to the 10-stage latches 41 to 50 of the filling data generation device 2 (as shown in the fourth figure).
Enter. This middle filling data generation device 2 generates data when eight consecutive pixels (latches 42 to 49) are "L"("H") and surrounding pixels (latches 4150) are "0"("L") (
In FIG. 3), the filling signal is inverted.

FIG. 5 shows an example of the circuit, where 51 is an AND circuit;
52 is a J flip-flop, and 53 is a D flip-flop.

In other words, the filling signal (indicated by 83 in the time chart of FIG. 7) cleared by the line synchronization signal (LSYNC) shown in FIG. 6 is 1"(" When the state shown in Figure 3 is reached again, it is set to "0"("L").An odd number of times sets it to "1", and an even number of times sets it to "0". By doing this, it is possible to obtain fill data that only fills the section that is the same as the hollow width and is not affected by other characters or solid areas.

Next, as shown in FIG. 8, the data control device performs the logical sum of the binary image data and the middle fill data using an OR circuit 81.
Positioning with the middle filling data is performed by a latch (in this case, shared with the latch of the middle filling data generation device 2), and a logical sum is performed.

Figures 9 and 10 are timing charts of each part mentioned above, and Figure 9 is the starting point of the hollow image (S in Figure 11).
10 shows the end point portion (the 8-point portion in FIG. 11) of the hollow image.

In this way, it is possible to obtain the middle filled image 23 shown in FIG. 2 or the middle filled image shown in FIG. 12.

〔Effect of the invention〕

As described above, according to the present invention, filling that is not affected by noise components or bad components can be realized with a simple circuit configuration.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an image processing apparatus according to an embodiment of the present invention, FIG. 2 is a diagram showing how a hollow image is converted to a filled image, FIG. 3 is a diagram showing the hollow width, and FIG. FIG. 4 is a diagram showing a 10-stage latch that constitutes a filling data generation device, FIG. 5 is a circuit diagram showing an example of a filling data generation device, and FIG.
The figure shows the reading direction of a digital image and the line synchronization signal, FIG. 7 is a timing chart showing the relationship between the line synchronization signal and fill data, FIG. 8 is a circuit diagram showing an example of a data control device, and FIG. 10 is a timing chart of each part, FIG. 11 is a diagram showing a hollow image, FIG. 12 is a diagram showing a hollow filled image according to the present invention, and FIG. 13 is a diagram showing a hollow filled image according to the conventional example. It is. ■...Binary image input device, 2...Middle filling data generation device, 3...Data control device. Fig. Fig. Fig. Fig. Fig. Fig. 10 Fig. 7'

Claims (1)

[Claims] The invention is characterized by comprising a binary image input device for inputting digital image data, a fill-in data generation device for generating fill-in data based on the input pixel values, and a data control device for controlling the above two data. image processing device.