Apparatus for color imager defect determination

Details Apparatus for color imager defect determination Apparatus for color imager defect determination

1992-02-11

1994-03-08

Powell, Mark R.

Facsimile and static presentation processing

Natural color facsimile

Measuring, testing, and calibrating

358523, 348187, H04N 907

Patent

active

052935434

ABSTRACT:
An inspection apparatus for color solid-state image pickup elements is configured to be provided with an A/D converter that performs the A/D conversion of the image signals which are the output of a color solid-state image pickup element, an image memory that stores the image signals that have been A/D converted by the A/D converter, a storage element that stores as a table the numerical hue data that express the degree to which color unevenness can be recognized by the human eye, a calculation circuit that performs image calculation processing on the basis of the image data stored in an image memory and that calculates judgment parameters on the basis of these calculation results and the hue data that is stored in the storage element, and a judgment circuit that judges whether a color solid-state image pickup element is faulty or not, on the basis of the judgment parameters.

REFERENCES:
patent: 4237488 (1980-12-01), Takemura
patent: 4542404 (1985-09-01), Duschl
patent: 4628352 (1986-12-01), Boue
patent: 4701784 (1987-10-01), Matsuoka et al.
patent: 4739495 (1988-04-01), Levine
patent: 4858013 (1989-08-01), Matsuda
patent: 5101271 (1992-03-01), Andrews et al.
patent: 5113246 (1992-05-01), Ninomiya et al.

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