KR100264336B1

KR100264336B1 - All applicable scanner for pixel unit color scanning method and line unit scannong method

Info

Publication number: KR100264336B1
Application number: KR1019980007024A
Authority: KR
Inventors: 권오준; 한지훈
Original assignee: 윤종용; 삼성전자주식회사
Priority date: 1998-03-04
Filing date: 1998-03-04
Publication date: 2000-08-16
Also published as: KR19990073834A

Abstract

PURPOSE: A reader applicable to pixel and line unit color reading methods is provided to read a complete color image by designing an ASIC chip by a structure which can control pixel and line unit color pickup elements. CONSTITUTION: A control signal generating device(120) generates a drive control signal for a pickup element according to a discriminating information which discriminates whether a pickup element is a pixel unit color pickup element or a line unit color pickup element. The control signal generating device(120) includes a division control register receiving and storing the discriminating information from a central processing unit and a control signal generator for the drive control signal according to the discriminating information stored in the division control register. An image correcting section(130) corrects a picked up image according to the discriminating information. A correction coefficient storage section(140) stores a correction coefficient value for correcting the image.

Description

Reading device that can apply both color reading method by pixel and color reading method by line

본 발명은 독취장치에 관한 것으로, 더욱 상세하게는 화소단위 컬러 독취 방식과 라인단위 컬러 독취 방식을 지원하는 두 가지 형태의 컬러 촬상소자를 모두 구동가능케하면서 각 형태별로 화상처리를 가능하게 하여 완전한 컬러 영상을 독취할 수 있게 하는 화소단위 컬러 독취 방식과 라인단위 컬러 독취 방식 모두를 적용 가능한 독취장치에 관한 것이다.The present invention relates to a reading apparatus. More particularly, the present invention is capable of driving both types of color image pickup devices supporting pixel-based color reading and line-color reading. The present invention relates to a reading apparatus that can apply both a pixel unit color reading method and a line unit color reading method for reading an image.

오늘날 컬러 복합기와 같이 컬러 독취 기능을 갖는 독취장치는 컬러 독취를 위해 컬러 전하 결합 소자(Charge Coupled Device: CCD)나 밀착형 이미지 센서(Contact Image Sensor: CIS)와 같은 컬러 촬상소자를 제어하여, 이를 통해 독취되는 영상을 처리하여 중간조 영상을 생성하거나 컬러 영상을 생성하는 모듈들이 하나의 ASIC 칩(Application Specific Integrated Circuit)으로 개발되어 왔다.Today's readers with color reading capabilities, such as color multifunction devices, control color imaging devices such as charge coupled devices (CCDs) or contact image sensors (CIS) for color reading. Modules that generate halftone images or color images by processing the image read through have been developed as an ASIC chip (Application Specific Integrated Circuit).

지금까지 개발된 컬러 촬상소자 제어 및 화상처리 전용 ASIC 칩들은 각각의 ASIC 칩에 의해 화소단위 독취소자 또는 라인단위 독취소자를 통해 화소 방식 또는 라인 방식 중 한가지 독취 방식만을 지원하게 ASIC 칩들이 개발되어 왔다.The ASIC chips dedicated to color imager control and image processing developed so far have been developed by each ASIC chip to support only one of the pixel type or the line type read type through the pixel type read element or the line type read element. come.

이처럼 기존의 컬러 촬상소자 제어 및 화상처리전용 ASIC 칩들은 라인 단위 컬러처리와 화소단위 컬러처리 중 하나만 지원이 가능했기 때문에 하나의 ASIC 칩이 화소단위 컬러 처리방식으로 개발되면, ASIC 칩을 사용할 계획이었던 독취장치는 시장에 출시되어있는 많은 종류의 컬러 CIS나 CCD 중 반드시 화소단위 독취를 지원하는 컬러 CCD와 CIS만을 선택해야만 했다.As the conventional ASIC chips dedicated to color imager control and image processing can support only one of line unit color processing and pixel unit color processing, when an ASIC chip was developed in a pixel unit color processing method, an ASIC chip was planned to be used. The reading device had to select only color CCDs and CISs that support pixel-level reading among many kinds of color CISs or CCDs on the market.

그러므로, 영상 독취속도가 향상된 새로운 CCD나 CIS가 시장에 출시되더라도 그 독취방법이 화소단위인지 라인단위인지를 보고 결정해야 한다는 문제점이 있었다.Therefore, even if a new CCD or CIS with improved image reading speed is introduced to the market, there is a problem in that the reading method should be determined based on whether it is pixel unit or line unit.

따라서, 본 발명의 목적은 화소단위 컬러 촬상소자와 라인단위 컬러 촬상소자 모두를 제어 가능한 구조로 ASIC 칩을 설계하고 각 방식별로 화상처리방식을 선택할 수 있는 범용의 ASIC 칩을 설계함으로써 앞에서 기술한 기존 ASIC 칩들의 한계를 극복하는데 있다.Accordingly, an object of the present invention is to design an ASIC chip with a structure capable of controlling both a pixel unit color image element and a line unit color image element and a general purpose ASIC chip capable of selecting an image processing method for each method. To overcome the limitations of ASIC chips.

도 1은 본 발명에 따른 화소단위 컬러 독취 방식과 라인단위 컬러 독취 방식 모두를 적용 가능한 독취장치를 나타낸 블록도이고,1 is a block diagram illustrating a reading apparatus to which both a pixel unit color reading method and a line unit color reading method according to the present invention are applicable.

도 2는 본 발명에 따른 보정계수저장부의 어드레스 맵을 나타내며,2 shows an address map of a correction coefficient storage unit according to the present invention;

도 3은 라인단위 컬러 촬상소자 구동 신호를 나타내는 타이밍 차트이고,3 is a timing chart showing a line-based color image sensor driving signal;

도 4는 화소단위 컬러 촬상소자 구동 신호를 나타내는 타이밍 차트이다.4 is a timing chart showing a pixel-based color image sensor driving signal.

<도면의 주요부분의 부호의 설명><Description of Symbols of Major Parts of Drawings>

100 : 중앙처리장치 110 : 촬상소자100: central processing unit 110: image pickup device

120 : 제어신호발생장치 120a : 구분제어레지스터120: control signal generator 120a: division control register

120b : 제어신호발생부 130 : 화상보정장치120b: control signal generator 130: image correction device

130a : 쉐이딩보정부 130b : 감마보정부130a: shading complementary 130b: gamma correction

140 : 보정계수저장부140: correction coefficient storage unit

상기 목적을 달성하기 위한 본 발명에 의하면, 제어신호발생장치에 의해 촬상소자가 화소단위 컬러 촬상소자인지 라인단위 컬러 촬상소자인지를 구별하는 구별정보에 따라 촬상소자에 대한 구동제어신호를 발생한 후, 화상보정장치에 의해 촬상소자에 대한 구동제어신호에 따라 촬상된 이미지를 촬상소자 구별정보에 따라 화상을 보정한다. 이때, 화상보정장치는 촬상된 이미지를 보정하기 위한 보정계수값을 저장한 보정계수저장부로부터 보정계수값을 읽는다.According to the present invention for achieving the above object, after the control signal generating device generates a drive control signal for the image pickup device according to the distinguishing information for distinguishing whether the image pickup device is a pixel unit color image pickup device or a line unit color image pickup device, The image corrected by the image correction device according to the image pickup device discrimination information is used to correct the image picked up according to the drive control signal for the image pickup device. At this time, the image correction apparatus reads the correction coefficient value from the correction coefficient storage unit which stores the correction coefficient value for correcting the captured image.

바람직하게, 제어신호발생장치는 구별 정보를 독취장치의 중앙처리장치로부터 입력받아 저장하는 구분제어레지스터와, 구분제어레지스터에 저장된 구별정보에 따라 촬상소자에 대한 구동 제어신호를 발생하는 제어신호발생부를 포함한다.Preferably, the control signal generator comprises a division control register for receiving and storing discrimination information from the central processing unit of the reading apparatus, and a control signal generator for generating a drive control signal for the image pickup device according to the discrimination information stored in the division control register. Include.

바람직하게, 보정계수저장부는 촬상된 이미지에 대한 쉐이딩보정 및 감마보정을 위해 한 라인에 대한 적색(R),녹색(G),청색(B) 각각에 대한 쉐이딩보정계수와 감마보정테이블을 갖는다.Preferably, the correction coefficient storage unit has a shading correction coefficient and a gamma correction table for each of red (R), green (G), and blue (B) for a line for shading correction and gamma correction on the captured image.

바람직하게, 화상보정장치는 상기 촬상된 이미지에 대해 쉐이딩 보정을 라인별로 상기 보정계수저장부에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 쉐이딩보정계수를 읽어 쉐이딩 보정하는 라인별쉐이딩보정부; 상기 쉐이딩 보정된 이미지에 대해 감마보정을 라인별로 상기 보정계수저장부에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 감마 테이블을 읽어 감마보정하는 라인별감마보정부; 상기 촬상된 이미지에 대해 쉐이딩 보정을 화소별로 상기 보정계수저장부에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 쉐이딩계수를 읽어 쉐이딩보정하는 화소별쉐이딩보정부; 상기 쉐이딩 보정된 이미지에 대해 감마보정을 화소별로 상기 보정계수저장부에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 감마 테이블을 읽어 감마보정하는 화소별감마보정부를 포함한다.Preferably, the image correction apparatus performs shading correction on the captured image by reading a shading correction coefficient for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each line. Line-by-line shading correction; A gamma correction unit for gamma correction for the shading-corrected image by reading a gamma table for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each line; A shading correction unit for shading correction for shading correction of the captured image by reading shading coefficients for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each pixel; And a gamma correction unit for gamma correction for the shading-corrected image by reading a gamma table for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each pixel. .

이하, 상기한 본 발명의 목적들, 특징들, 그리고 장점들을 첨부된 도면에 나타낸 본 발명의 바람직한 실시예를 통해 보다 상세히 설명한다.Hereinafter, the objects, features, and advantages of the present invention described above will be described in more detail with reference to the preferred embodiments of the present invention shown in the accompanying drawings.

후술되는 용어들은 본 발명에서의 기능을 고려하여 정의 내려진 용어들로서 이는 당 분야에 종사하는 기술자의 의도 또는 관례 등에 따라 달라질 수 있으므로, 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.The terms to be described below are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of a person skilled in the art, and the definitions should be made based on the contents throughout the specification.

도 1을 참조하여 본 발명에 따른 화소단위 컬러 독취 방식과 라인단위 컬러 독취 방식 모두를 적용 가능한 독취장치를 살펴보면, 제어신호발생장치(120)는 중앙처리장치(100)로부터 촬상소자(110)가 화소단위 컬러 촬상소자인지 라인단위 컬러 촬상소자인지를 구별하는 정보를 입력받아 구분제어레지스터(120a)에 저장한 후 제어신호발생부(120b)를 기동시켜 구분제어레지스터(120a)에 저장된 내용을 이용하여 제어신호발생부(120b)가 촬상소자(110)의 제어신호를 발생시킨다.Referring to FIG. 1, a reading apparatus capable of applying both a pixel unit color reading method and a line unit color reading method according to the present invention will be described. The control signal generator 120 includes an image pickup device 110 from a central processing unit 100. Receives information for distinguishing whether the pixel unit color image pickup device or the line unit color image pickup device is input and stores the information in the division control register 120a, and then starts the control signal generator 120b to use the contents stored in the division control register 120a. The control signal generator 120b generates a control signal of the imaging device 110.

한편, 제어신호 발생부(120)에 의해 발생된 제어신호에 따라 촬상소자(110)를 통해 화소를 촬상한 후, 화상보정장치(130)는 촬상된 이미지에 대해 보정계수저장부(140)에 저장된 쉐이딩보정계수 및 감마보정테이블을 이용하여 촬상소자(110)의 종류에 맞게 쉐이딩보정부(130a)와 감마보정부(130b) 각각에 의해 쉐이딩보정 및 감마보정을 수행한다.On the other hand, after imaging the pixel through the image pickup device 110 according to the control signal generated by the control signal generator 120, the image correction device 130 to the correction coefficient storage unit 140 for the captured image Shading correction and gamma correction are performed by the shading correction unit 130a and the gamma correction unit 130b according to the type of the imaging device 110 by using the stored shading correction coefficient and the gamma correction table.

한편, 보정계수저장부(140)에 저장된 쉐이딩보정계수 및 감마보정테이블은 도 2와 같이 구성되어, R-쉐이딩보정계수, G-쉐이딩보정계수, B-쉐이딩보정계수, R-감마보정테이블, G-감마보정테이블, B-감마보정테이블을 각각 저장하여 화상보정장치(130)의 쉐이딩보정부(130a)와 감마보정부(130b)에 의해 참조된다.On the other hand, the shading correction coefficient and the gamma correction table stored in the correction coefficient storage unit 140 is configured as shown in Figure 2, R- shading correction coefficient, G- shading correction coefficient, B- shading correction coefficient, R-gamma correction table, The G-gamma correction table and the B-gamma correction table are stored and referred to by the shading correction unit 130a and the gamma correction unit 130b of the image correction device 130, respectively.

바람직하게, 쉐이딩보정부(130a)는 촬상된 이미지에 대해 쉐이딩 보정을 라인별로 보정계수저장부(140)에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 쉐이딩보정계수를 읽어 쉐이딩보정하는 라인별쉐이딩보정부(미도시)와, 촬상된 이미지에 대해 쉐이딩 보정을 화소별로 보정계수저장부(140)에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 쉐이딩계수를 읽어 쉐이딩 보정하는 화소별쉐이딩보정부(미도시)로 구분하여 구성할 수 있다.Preferably, the shading correction unit 130a performs shading correction on the captured image and determines shading correction factors for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit 140 for each line. Shading correction for each line for shading correction (not shown) and shading correction for the captured image are applied to each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit 140 for each pixel. It can be configured by dividing the shading correction for each pixel to read the shading coefficient for shading correction (not shown).

또한, 감마보정부(130b)는 쉐이딩 보정된 이미지에 대해 감마보정을 라인별로 보정계수저장부(140)에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 감마 테이블을 읽어 감마보정하는 라인별감마보정부(미도시)와, 쉐이딩 보정된 이미지에 대해 감마보정을 화소별로 보정계수저장부(140)에 저장된 적색(R),녹색(G),청색(B) 각각에 대한 감마 테이블을 읽어 감마보정하는 화소별감마보정부(미도시)로 구분하여 구성할 수 있다.In addition, the gamma correction unit 130b reads a gamma table for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit 140 for each shading-corrected image. Gamma correction for each gamma correction line (not shown) and gamma correction for shading-corrected images are performed for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit 140 for each pixel. The gamma table may be divided into gamma correction units (not shown) for gamma correction.

이하, 본 발명에 따른 화소단위 컬러 독취 방식과 라인단위 컬러 독취 방식 모두를 적용 가능한 독취장치의 작용을 살펴본다.Hereinafter, the operation of the reading apparatus applicable to both the pixel unit color reading method and the line unit color reading method according to the present invention will be described.

먼저, 제어신호발생장치(120)는 중앙처리장치(100)로부터 촬상소자(110)가 화소단위 컬러 촬상소자인지 라인단위 컬러 촬상소자인지를 구별하는 정보를 입력받아 구분제어레지스터(120a)에 저장한다.First, the control signal generator 120 receives information from the central processing unit 100 to identify whether the image pickup device 110 is a pixel-based color image pickup device or a line-based color image pickup device, and stores the information in the division control register 120a. do.

즉, 촬상소자(10)에 의한 독취방식이 화소단위 컬러 독취 방식인지 라인단위 컬러 독취 방식인지 중앙처리장치(100)로부터 입력받는다.That is, whether the read method by the imaging device 10 is the pixel unit color read method or the line unit color read method is received from the central processing unit 100.

바람직하게, 독취방식의 정의는 제품 개발자에 의해 결정할 수 있다.Preferably, the definition of the reading mode can be determined by the product developer.

독취방식을 결정하는 정보를 입력받아 구분제어레지스터(120a)에 저장한 후, 제어신호발생부(120b)는 구분제어레지스터(120a)에 저장된 정보에 따라 도 3과 도 4와 같은 제어신호를 발생하여 촬상소자를 구동한다.After receiving the information for determining the reading method and storing it in the division control register 120a, the control signal generator 120b generates the control signals as shown in FIGS. 3 and 4 according to the information stored in the division control register 120a. To drive the image pickup device.

즉, 라인단위의 컬러독취를 수행하기 위해 라인단위 컬러 촬상소자를 이용할 때는 도 3과 같이 SI(라인 클럭) 구간 동안 한 라인에 대한 R 픽셀을 촬상하고, 다음 SI(라인 클럭) 구간 동안 한 라인에 대한 G 픽셀을 촬상하고, 세 번째 SI(라인 클럭) 구간 동안 한 라인에 대한 B 픽셀을 촬상한다.That is, when using the line color image pickup device to perform line unit color reading, as shown in FIG. 3, an R pixel of one line is captured during an SI (line clock) section, and one line is used during the next SI (line clock) section. Image the G pixel for and B pixel for one line during the third SI (line clock) period.

이처럼, 라인단위 컬러 촬상소자 구동신호를 발생하여 촬상한 후, 화상보정장치(130)의 쉐이딩보정부(130a)는 촬상된 이미지에 대해 쉐이딩 보정을 각 라인별로 보정계수저장부(140)에 저장된 R, G, B 쉐이딩계수를 읽어 쉐이딩보상을 하고, 화상보정장치(130)의 감마보정부(130b)는 쉐이딩 보정된 이미지에 대해 감마보정을 각 라인별로 보정계수저장부(140)에 저장된 R, G, B 감마 테이블을 읽어 감마보정한다.As such, after generating and photographing a line-based color image pickup device driving signal, the shading correction unit 130a of the image correction apparatus 130 stores shading corrections for the captured images in the correction coefficient storage unit 140 for each line. Shading compensation is performed by reading the R, G, and B shading coefficients, and the gamma correction unit 130b of the image correction apparatus 130 stores the gamma correction for each shading corrected image in the correction coefficient storage unit 140 for each line. Gamma correct by reading the G, B gamma tables.

한편, 화소단위의 컬러독취를 수행하기 위해 화소단위 컬러 촬상소자를 이용할 때는 도 4와 같이 SI(라인 클럭) 구간 동안 한 라인에 대한 R 픽셀을 화소단위로 촬상하고, 다음 SI(라인 클럭) 구간 동안 한 라인에 대한 G 픽셀을 화소단위로 촬상하고, 세 번째 SI(라인 클럭) 구간 동안 한 라인에 대한 B 픽셀을 화소단위로 촬상한다.On the other hand, when using the pixel-based color image pickup device to perform the pixel-by-pixel color reading, as shown in Figure 4 during the SI (line clock) period, the R pixel for one line in the pixel unit, and then the SI (line clock) section G pixels for one line are taken pixel by pixel, and B pixels for one line are taken pixel by pixel during the third SI (line clock) period.

한 라인에 대한 화소단위 컬러 촬상소자 구동신호를 발생하여 촬상한 후, 화상보정장치(130)의 쉐이딩보정부(130a)는 촬상된 이미지에 대해 쉐이딩 보정을 각 화소별로 보정계수저장부(140)에 저장된 R, G, B 쉐이딩계수를 읽어 쉐이딩보상을 하고, 화상보정장치(130)의 감마보정부(130b)는 쉐이딩 보정된 이미지에 대해 감마보정을 각 화소별로 보정계수저장부(140)에 저장된 R, G, B 감마 테이블을 읽어 감마보정한다.After generating and photographing the pixel unit color image pickup device driving signal for one line, the shading correction unit 130a of the image correction apparatus 130 performs shading correction on the captured image for each pixel, and corrects the coefficient correction unit 140. Shading compensation is performed by reading the R, G, and B shading coefficients stored in the gamma correction unit, and the gamma correction unit 130b of the image correction device 130 performs gamma correction on the shading-corrected image to the correction coefficient storage unit 140 for each pixel. Gamma correction is performed by reading the stored R, G and B gamma tables.

이와 같은 쉐이딩보정을 하기 위해서는 미리 초기화 단계에서 기준이 되는 흰색판을 독취하여 한 라인에 대한 각각의 R, G, B 라인 쉐이딩보정계수를 구하여 보정계수저장부(140)에 저장한다.In order to perform such shading correction, a white plate, which is a reference in the initialization step, is read in advance, and respective shading correction coefficients of the R, G, and B lines are calculated and stored in the correction coefficient storage unit 140.

이렇게 구성된 보정계수저장부(140)에 저장된 한 라인에 대한 R, G, B 라인 각각의 쉐이딩보정계수를 사용하여 실재 문서를 독취할 때 쉐이딩보정부(130a)에 의해 입력 영상을 쉐이딩보정계수로 나누어 쉐이딩 보정을 한다.The reading image is read by the shading correction unit 130a when the actual document is read using the shading correction coefficients of the R, G, and B lines for each line stored in the correction coefficient storage unit 140 configured as described above. Divide and correct shading.

이에 반해, 보정계수저장부(140)에 저장된 한 라인에 대한 R, G, B 라인 각각의 감마보정테이블은 제품양산시 개발자에 의해 원하는 감마 특성을 기록하므로 구성한다.On the other hand, the gamma correction table for each of the R, G, and B lines for one line stored in the correction coefficient storage unit 140 is configured by recording a desired gamma characteristic by the developer at the time of mass production.

이상에서 살펴본 바와 같이, 본 발명에 따르면 화소단위 컬러 촬상소자와 라인단위 컬러 촬상소자 모두를 제어 가능한 구조로 ASIC 칩을 설계하고 각 방식별로 화상처리방식을 선택할 수 있는 범용의 ASIC 칩을 설계함으로써 향후 시장에 출시될 컬러 촬상소자라 할지라도 라인단위와 화소단위 두 가지 타입을 벗어나지 않기 때문에 ASIC 칩의 속도가 컬러 독취센서의 속도에 미달하지 않는 한 새로 독취용 ASIC 칩을 개발할 필요가 없게되므로 독취장치 개발에 원가 절감효과가 있다.As described above, according to the present invention, by designing the ASIC chip with a structure that can control both the pixel-based color imager and the line-color color imager, and by designing a general-purpose ASIC chip that can select the image processing method for each method Even if the color imager to be released to the market does not escape the two types of line unit and pixel unit, it is not necessary to develop a new read ASIC chip unless the speed of the ASIC chip is less than the speed of the color read sensor. Cost reduction in development.

이상 본 발명의 바람직한 실시예에 대해 상세히 기술되었지만, 본 발명이 속하는 기술 분야에 있어서 통상의 지식을 가진 사람이라면, 첨부된 청구 범위에 정의된 본 발명의 정신 및 범위를 벗어나지 않으면서 본 발명을 여러 가지로 변형 또는 변경하여 실시할 수 있음을 알 수 있을 것이다. 따라서 본 발명의 앞으로의 실시예들의 변경은 본 발명의 기술을 벗어날 수 없을 것이다.Although the preferred embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that the present invention may be modified without departing from the spirit and scope of the invention as defined in the appended claims. It will be appreciated that modifications or variations may be made. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

Claims

In a reading device having an image pickup device for reading a document,

A control signal generator for generating a drive control signal for the imaging device in accordance with the discrimination information for discriminating whether the imaging device is a pixel-based color imaging device or a line-based color imaging device;

An image correction device for correcting an image picked up according to a drive control signal for the image pickup device according to the discrimination information;

And a correction coefficient storage unit for storing correction coefficient values for correcting the image by the image correction apparatus. 2.

According to claim 1, wherein the control signal generator,

A division control register for receiving the identification information from the central processing unit of the reading apparatus and storing the identification information;

And a control signal generator for generating a driving control signal for the image pickup device according to the distinguishing information stored in the division control register.

The method of claim 1, wherein the correction coefficient storage unit,

Color shading correction factor and gamma correction table for each of red (R), green (G) and blue (B) lines for shading correction and gamma correction for the captured image Read device that can apply both reading method and line reading method.

The image correction apparatus of claim 3,

A shading correction unit for shading correction on the captured image by reading a shading correction coefficient for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each line;

A gamma correction unit for gamma correction for the shading-corrected image by reading a gamma table for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each line;

A shading correction for each pixel for shading correction of the captured image by reading shading coefficients for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each pixel;

And a gamma correction unit for gamma correction of the shading-corrected image by reading a gamma table for each of red (R), green (G), and blue (B) stored in the correction coefficient storage unit for each pixel. Readout device that can be applied to both the pixel-based color reading method and the line-based color reading method characterized in that.