In the case where a digital camera is used for evaluating a display quality of an image display panel, moire is generated due to a shift of a pixel pitch between a pixel of a panel and a pixel of a digital camera, and thus, a great influence is given as measurement deviation. The present invention carries out a panel display quality evaluation at low cost and short time with relieved influence of moire by treating a value, which is obtained by recognizing a coordinate of a panel pixel in a shot image based on an image for detecting a coordinate and positional information thereof with high accuracy and by calculating average luminance by panel pixel unit based on a center position of a coordinate, as representative luminance in each pixel of the panel, in a panel evaluation method of shooting an image display panel with a digital camera.

Claims

38 · 5 independent · depth 4

38 granted claims

›1.independentAn image analysis method comprising the steps of:nshooting a display panel while displaying a fixed pattern having a lattice design with a digital cam…+2

›2.independentAn image analysis method comprising the steps of:nshooting a display panel while displaying a first image having a fixed pattern having a lattice desi…+4

›3.independentAn image analysis method comprising the steps of:nshooting a display panel while displaying a first image having a fixed pattern having a lattice desi…+6

›6.↳ 3An image analysis method according to claim 3,nthe step of shooting the first image and the step of shooting the second image are performed with a loc…d2

›8.↳ 3An image analysis method according to claim 3,nthe second image is an entire black image or an entire white image.d2

›10.↳ 3An image analysis method according to claim 3,nwherein the center coordinate of each pixel of the display panel is recognized by using an approximated…d2

›13.↳ 3An image analysis method according to claim 3,nwherein a predetermined threshold to luminance which indicates a boundary between a normal pixel and a …d2+2

›16.independentA pixel evaluation system comprising:na computer comprising:na recording medium, the recording medium recorded with:a program for recognizing a center…+14

›17.↳ 16The pixel evaluation systemnaccording to claim 16, wherein the second image is shot with the digital camera.d2+6

›20.↳ 17The pixel evaluation system according to claim 17,nwherein the program for recognizing the center coordinate of each pixel of the display panel compri…d3

›23.↳ 17The pixel evaluation system according to claim 17,nthe recording medium further recorded with:a program for forming a first image for integrating a pi…d3+1

›29.↳ 17The pixel evaluation system according to claim 17,nthe recording medium further recorded with:a program for setting a predetermined threshold to lumin…d3

›32.↳ 17The pixel evaluation system according to claim 17,nthe recording medium further recorded with:a program for saving a position of a display defect pixe…d3

›35.↳ 17The pixel evaluation system according to claim 17,nthe recording medium further recorded with a program for carrying out a consecutive process from re…d3

›19.↳ 16The pixel evaluation system according to claim 16,nwherein the program for recognizing the center coordinate of each pixel of the display panel compri…d2

›22.↳ 16The pixel evaluation system according to claim 16,nthe recording medium further recorded with:a program for forming a first image for integrating a pi…d2+1

›28.↳ 16The pixel evaluation system according to claim 16,nthe recording medium further recorded with:a program for setting a predetermined threshold to lumin…d2

›31.↳ 16The pixel evaluation system according to claim 16,nthe recording medium further recorded with:a program for saving a position of a display defect pixe…d2

›34.↳ 16The pixel evaluation system according to claim 16,nthe recording medium further recorded with a program for carrying out a consecutive process from re…d2

›37.↳ 16The pixel evaluation system according to claim 16,nwherein the center coordinate of each pixel of the display panel is recognized by using an approxim…d2

›18.independentA pixel evaluation system comprising:na computer comprising:na recording medium, the recording medium recorded with:a program for recognizing a center…+7

›21.↳ 18The pixel evaluation system according to claim 18,nwherein the program for recognizing the center coordinate of each pixel of the display panel compri…d2

›24.↳ 18The pixel evaluation system according to claim 18,nthe recording medium further recorded with:a program for forming a first image for integrating a pi…d2+1

›30.↳ 18The pixel evaluation system according to claim 18,nthe recording medium further recorded with:a program for setting a predetermined threshold to lumin…d2

›33.↳ 18The pixel evaluation system according to claim 18,nthe recording medium further recorded with:a program for saving a position of a display defect pixe…d2

›36.↳ 18The pixel evaluation system according to claim 18,nthe recording medium further recorded with a program for carrying out a consecutive process from re…d2

›38.↳ 18The pixel evaluation system according to claim 18,nwherein the center coordinate of each pixel of the display panel is recognized by using an approxim…d2

Classifications

5 codes

IPC · International Patent Classification

Section G — Physics

G06K9/40

USPC · US Patent Classification

382/267382/275382/264348/806

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Jayesh A Patel

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Type	Document	Date
related publication	US 20050232476 A1	20 Oct 2005

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