JPH1093867A - Correction data setting apparatus and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely designate the position of a defective picture element. SOLUTION: An H cursor 121 moves to a horizontal direction and the defective picture element is arranged to position in the center of the H cursor 121. Then, the H cursor 121 is deleted and a V cursor in a form obtained by rotating the H cursor 121 by 90 degrees is displayed. The V cursor moves in a vertical direction and the defective picture element is arranged to position in the center of the V cursor. Thus, the position of the defective picture element is designated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for setting correction data, and more particularly, to controlling a display of a plurality of straight lines constituting a marker on a predetermined display unit for each of the straight lines to obtain a solid-state image sensor. A correction data setting device and method for designating a predetermined pixel on a screen.

[0002]

2. Description of the Related Art A photographing camera (studio camera) used in a photographing studio or the like has a light receiving element, for example, a CCD (Charge Coupled Device) which is a solid-state image pickup element.
e) is used.

In a photographing camera using a CCD,
Each pixel of the CCD converts the incident light into an electric signal. In such a CCD pixel, a pixel (defective pixel) which outputs a higher value than another pixel (normal pixel) may be generated in a state where light is not incident.

When a defective pixel is generated, the quality of a captured image is degraded. For example, a correction circuit for correcting a signal output from a defective pixel, which is disclosed in JP-A-1-108879, is provided in a photographing camera. Before shipment, the value output by the defective pixel is corrected to an appropriate value.

[0005] As a correction method at this time, 0-order interpolation,
Methods such as defect correction using primary interpolation and so-called RPN (residual pattern noise) correction have been devised.

The defect correction by zero-order interpolation involves holding a signal output from a defective pixel by a sampling circuit and replacing the signal output from the defective pixel with the signal of the immediately preceding pixel.

In the defect correction by the primary interpolation, an average value of a signal output from a pixel immediately before the defective pixel and a signal output from a pixel next to the defective pixel is determined by using an output signal of the defective pixel as an output signal of the defective pixel. Is a replacement.

Further, in the RPN correction, a signal corresponding to a signal output from a defective pixel is generated inside the photographing camera, and the signal is subtracted from a signal output from the defective pixel, thereby outputting the signal from the defective pixel. Signal to be suppressed.

Defect correction is performed by using these methods. However, defective pixels of the CCD may be generated at the time of manufacture, or may be generated when a photographing camera is used by a user after shipment. .

In order to correct a defective pixel generated after shipment, a circuit for detecting a defective pixel is provided, and a camera for correcting the pixel is disclosed in, for example, Japanese Patent Laid-Open No. 3-29.
No. 6375.

However, when a circuit for detecting a defective pixel is provided as described above, the circuit configuration inside the photographing camera becomes complicated and the cost of the photographing camera increases.

Therefore, by displaying an image taken without light incident on the CCD on a predetermined display section outside the photographing camera, only defective pixels are displayed, and a predetermined marker is displayed. A method of setting the correction value of the defective pixel after designating the defective pixel and updating the correction value stored in the photographing camera after shipment is disclosed in, for example, JP-A-6-113211. .

[0013]

However, in the above-mentioned method, for example, when the position of a defective pixel as shown in FIG. 10 is specified by a cross-shaped marker as shown in FIG. Is the same as the pixel width, but due to display device resolution issues,
There is a problem that it is difficult to accurately match the center of the marker with the defective pixel. For example, as shown in FIG. 12, when a marker is superimposed on a defective pixel, it is difficult to confirm whether the center of the marker at the position of the defective pixel is coincident or not, as shown in FIG. However, there is a possibility that an adjacent pixel is specified by mistake.

The present invention has been made in view of such a situation, and independently controls the display of each straight line constituting a marker so that the horizontal position and the vertical position of a defective pixel can be independently controlled. , The position of the defective pixel can be accurately specified.

[0015]

According to a first aspect of the present invention, there is provided a correction data setting apparatus including a control unit for controlling display of a plurality of straight lines constituting a marker for each of the straight lines.

According to a fourth aspect of the present invention, there is provided a method of setting correction data.
The display of a plurality of straight lines forming the marker is controlled for each of the straight lines.

In the correction data setting device according to the first aspect, the control means controls display of a plurality of straight lines constituting the marker for each of the straight lines.

According to the correction data setting method of the present invention, the display of a plurality of straight lines constituting the marker is controlled for each of the straight lines.

[0019]

FIG. 1 shows an example of the configuration of a commercial AV processing system to which a correction data setting device according to the present invention is applied. Camera command network unit (C
The NU) 1 has a detachable extension board 31-1, and through each terminal of the extension board 31-1, a remote control panel (RCP) 2, a master setup unit (MSU) 3 (control means, setting ), And control data (data communicated between the input device and the AV device) supplied from the input device or the AV device connected to an AV device such as the camera control unit (CCU) 4. Is output to a corresponding AV device or input device.

The RCP 2 is operated mainly when performing simple adjustment (for example, iris adjustment) of the photographing camera 5 at the time of photographing, and the control data corresponding to the operation is stored in the CNU.
1 is output.

The MSU 3 is operated mainly when performing a more detailed adjustment than the RCP 2 on the photographing camera 5 at the time of maintenance, and the control data corresponding to the operation is transmitted to the CSU 3.
The data is output to the NU1.

The CCU 4 controls the photographing camera 5 according to the control data supplied from the CNU 1, reads out the parameters (state data) held by the photographing camera 5, and outputs the parameter data to the CNU 1. Has been made.

The CCU 4 outputs a video signal corresponding to an image captured by the camera 5 to the VCS 7.

The VCS 7 outputs the video signal supplied from the CCU 4 to the picture monitor 8 (display means) and the waveform monitor 9 in accordance with the control data supplied from the CNU 1.

The picture monitor 8 displays an image corresponding to the video signal supplied from the VCS 7 (ie, an image captured by the camera 5).

The waveform monitor 9 displays the waveform of the video signal supplied from the VCS 7.

FIG. 2 shows a configuration example of the MSU 3.

The control circuit 41 causes a predetermined menu screen to be displayed on the monitor 42, and the user inputs a transparent touch panel 43 provided on the screen of the monitor 42 or an operation unit 44 provided on the housing. The control data is output to the CNU 1 in response to the signal corresponding to the operation by the user, and the numerical value and the like of the control data (having status data) supplied from the CNU 1 are displayed on the monitor 42.

FIG. 3 shows an example of an electrical configuration inside the photographing camera 5.

The CCDs 63-R, 63-G, 63-B are:
The light condensed by the lens 61 and converted into any of red light, green light, and blue light by the prism 62 is converted into an electric signal, and the electric signal is added to the adders 67-R, 67-G, and 6.
7-B.

The correction circuit 68 adds correction values corresponding to the outputs of the respective pixels of the CCDs 63-R, 63-G, and 63-B stored in a built-in memory to adders 67-R and 67-B.
G, 67-B.

When a new correction value for a predetermined pixel is supplied from the CCU 4, the correction circuit 68 updates the correction value of the pixel stored in the built-in memory with the new correction value. It has been made like that.

The adders 67-R, 67-G, 67-B are:
After adding the correction values supplied from the correction circuit 68 to the signals supplied from the CCDs 63-R, 63-G and 63-B, the signals are output to the amplifiers 64-R, 64-G and 64-B, respectively. Has been made.

The amplifiers 64-R, 64-G and 64-B are:
The signals supplied from the adders 67-R, 67-G and 67-B are adjusted, and the adjusted signals are processed by the subsequent processing circuits 65-R and 65-R.
65-G and 65-B.

Processing circuits 65-R, 65-G, 65-B
Performs predetermined processing on the supplied signal, and outputs the processed signal to the conversion circuit 66. The conversion circuit 66 is supplied from the processing circuits 65-R, 65-G, and 65-B. R
The GB signal is converted into, for example, an NTSC signal and output to the CCU 4.

Next, referring to the flowchart of FIG.
The operation of correcting the defective pixel in the AV processing system of FIG. 1 will be described.

First, in step S1, MSU3
When the predetermined operation unit 44 is operated, as shown in FIG.
A menu screen for correcting defective pixels is displayed on the monitor 42.

On this menu screen, an "R" button 101, a "G" button 102, and a "B" button 1
Numeral 03 is operated when correcting defective pixels of the CCDs 63-R, 63-G and 63-B.

The CCU 4 extracts a signal corresponding to the output of the CCD selected here from the signal supplied from the photographing camera 5, and supplies the signal to the picture monitor 8 via the VCS 7.

On this menu screen, "H Cur
"Sor" button 104 (input means), MSU3
The control circuit 41 supplies the photographing camera 5 via signals CNU1 and CCU4 corresponding to the operation. Then, an H cursor 121 (FIG. 6) for designating a horizontal position on the display screen by the photographing camera 5 (first cursor) is displayed.
Is generated and displayed on the picture monitor 8. Then, in step S2, the operation dial 51-1 (input means) which is a part of the operation unit 44 of the MSU3.
Is operated, the H cursor 121 is moved in the horizontal direction so that the defective pixel is located at the center of the H cursor 121 as shown in FIG. At this time, the current position of the H cursor 121 is displayed on the monitor 42.

Next, in step S3, "V Cu
When the user presses the "rsor" button 105 (input means), an image of the V cursor 122 (FIG. 7) (second straight line) for designating a vertical position on the display screen is generated by the photographing camera 5, and the picture monitor 8 Will be displayed. At this time, the “H Cursor” button 104 is pressed as necessary to delete the H cursor 121. Then, in step S4, the operation dial 51-2 (input means) which is a part of the operation unit 44 of the MSU 3 is operated so that the defective pixel is located at the center of the V cursor 122 as shown in FIG. , V cursor 122 is moved in the vertical direction.

By designating the position of the defective pixel for each direction in this way, the center of the cursor (marker) can be easily located at the defective pixel. At this time, the "H / V Cursor" button 1 on the menu screen is displayed.
When the user presses 06, both the H cursor 121 and the V cursor 122 are displayed on the picture monitor 8, as shown in FIG. Then, the "H / V Cursor" button 10
6 again, the H cursor 121 and the V cursor 1
22 are both erased.

Next, in step S5, "Enter
When the "r" button 107 is pressed, the position of the cursor is determined, and the screen of the monitor 42 is switched as shown in FIG. 9, and the correction value of the pixel corresponding to that position is displayed.

Then, in step S6, while checking the brightness (darkness) of the defective pixel displayed on the picture monitor 8, the operation dial 51-4 of the MSU 3 is operated to adjust this correction value. Brightness (darkness) of defective pixel
Is appropriate, "Sa" on the screen shown in FIG. 9 is displayed.
When the "ve" button 108 is pressed, the correction value at this time becomes C
The correction value is supplied to the correction circuit 68 of the photographing camera 5 via the NU 1 and the CCU 4 to update the correction value. Then, the menu screen of FIG. 5 is displayed again. In addition, "Cance
When the "l" button 109 is pressed, the operation of updating the correction value is stopped, and the menu screen of FIG. 5 is displayed again.

Next, in step S7, if another defective pixel is to be further corrected, the process returns to step S1, and if another defective pixel is corrected, and if no other defective pixel is corrected, "Exit" is selected. When the button 111 is pressed, the correction processing ends. In the case where another CCD is to be corrected, the process returns to step S1, and after the button corresponding to the CCD is pressed on the menu screen of FIG. 5, the correction is performed.

As described above, each CCD 63-R, 6
The 3-G and 63-B defective pixels are corrected. As described above, since the position of the marker (cursor) is adjusted to the defective pixel in each direction, the center of the marker can be easily adjusted to the defective pixel.

In the above-described procedure for correcting a defective pixel, the position in the horizontal direction is specified first.
The vertical position may be specified first.

When a large number of defective pixels exist, the "H / V Cursor" button 1 on the menu screen shown in FIG.
By operating 06 to display or erase the marker as appropriate, it is possible to keep track of the defective pixel currently being adjusted while adjusting the correction value.

The markers (H cursor 121 and V cursor 122) described above are not limited to the shapes shown in FIGS. 6 and 7, but may have other shapes, for example, both ends of the display screen of the picture monitor 8. The cursor may be shaped so as to reach a part.

[0050]

As described above, according to the correction data setting device according to the first aspect and the correction data setting method according to the fourth aspect, an image captured by the solid-state imaging device is displayed on the display unit. The display position of the marker to be controlled is controlled, and the display of a plurality of straight lines constituting the marker is controlled for each of the straight lines. Therefore, the horizontal position and the vertical position of the defective pixel can be specified independently. Thus, the position of the defective pixel can be accurately specified.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of an AV processing system.

FIG. 2 is a block diagram illustrating a configuration example of an MSU in FIG. 1;

FIG. 3 is a block diagram showing an example of an electrical configuration inside the photographing camera of FIG. 1;

FIG. 4 is a flowchart illustrating an operation when correcting a defective pixel of a CCD.

FIG. 5 is a diagram showing an example of a menu screen displayed when correcting a defective pixel of the CCD.

FIG. 6 is a diagram showing an example of display of an H cursor.

FIG. 7 is a diagram showing an example of display of a V cursor.

FIG. 8 is a diagram showing an example of display of an H cursor and a V cursor.

FIG. 9 is a diagram illustrating an example of a screen displayed when a correction value of a defective pixel of the CCD is adjusted.

FIG. 10 is a diagram showing an example of display of a defective pixel.

FIG. 11 is a diagram illustrating an example of a marker.

FIG. 12 is a diagram illustrating an example of display when a marker is moved to a position of a defective pixel.

FIG. 13 is a diagram illustrating an example of a positional relationship between a pixel designated by a marker and a defective pixel.

[Explanation of symbols]

1 camera command network unit (CNU),
2 Remote control panel (RCP), 3
Master setup unit (MSU), 4 camera control unit (CCU), 5 camera,
8 picture monitor, 41 control circuit, 42 monitor, 43 touch panel, 44 operation unit, 51-1
To 51-4 operation dial, 68 correction circuit

Claims (4)

[Claims] A display unit that displays an image and a marker captured by the solid-state imaging device; a control unit that controls a display position of the marker; and a correction of a pixel of the solid-state imaging device corresponding to the display position of the marker. A correction data setting device comprising: a setting unit for setting a value; wherein the control unit controls display of a plurality of straight lines forming a marker for each of the straight lines. 2. The marker according to claim 1, further comprising: a first straight line defining a position of the display means in a first direction; and a second straight line defining a position of the display means in a second direction perpendicular to the first direction. 2. The correction data setting device according to claim 1, wherein the correction data setting device comprises two straight lines. 3. An input device operated when changing a display or a position of the marker, wherein the control device operates according to an operation on the input device.
The correction data setting device according to claim 2, wherein at least one of the first straight line and the second straight line of the marker is displayed on the display unit. 4. A display position of a marker displayed on a display unit on which an image picked up by the solid-state imaging device is displayed, and a correction value of a pixel of the solid-state imaging device corresponding to the display position of the marker is set. A correction data setting method for correcting an output of a pixel of the solid-state imaging device with the correction value, wherein a display of a plurality of straight lines forming a marker is controlled for each of the straight lines; .