Title:
IMAGE PROCESSING METHOD AND IMAGE PROCESSING DEVICE FOR EXECUTING IMAGE PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/146765
Kind Code:
A1
Abstract:
[Problem] To provide an image processing method capable of suppressing the influence of moire without reducing image resolution even if time is not spent setting an angle at which an image of a display panel is captured by a camera, and an image processing device for executing the image processing method.
[Solution] An image processing method comprising: a focused image capturing step for focusing and capturing a display image on a display panel by means of a camera; a first image generation step for applying a high-pass filter to the captured image from the focused image capturing step to generate a first image by removing or reducing a spatial frequency component corresponding to moire occurring in the captured image; a defocused image capturing step for defocusing and capturing the display image by the camera; a second image generation step for applying a correction filter to the captured image from the defocused image capturing step to correct attenuation of the spatial frequency component of the captured image from the defocused image capturing step by means of the correction filter, and applying a low-pass filter to the corrected captured image from the defocused image capturing step to generate a second image; and a third image generation step for combining the first image and the second image to generate a third image in which the moire is eliminated or suppressed, wherein the sum of the transmittance of the high-pass filter and the transmittance of the low-pass filter has a constant value at any spatial frequency.
Inventors:
MURASE HIROSHI (JP)
Application Number:
PCT/JP2017/004717
Publication Date:
August 16, 2018
Filing Date:
February 09, 2017
Export Citation:
Assignee:
IIX INC (JP)
International Classes:
H04N17/04; G06T5/00; G09G5/00; H04N1/40; H04N5/21; H04N5/232; H04N5/66
Domestic Patent References:
| WO2016009493A1 | 2016-01-21 | |||
| WO2014050222A1 | 2014-04-03 |
Foreign References:
| JPH0257674U | 1990-04-25 | |||
| JP2002077645A | 2002-03-15 | |||
| JPH04220882A | 1992-08-11 | |||
| JPS6010925A | 1985-01-21 |
Attorney, Agent or Firm:
MATSUDA Junichi et al. (JP)
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