Patent ID: 7646892

Claim:
An image inspecting apparatus for determining a quality for an image data output from an image sensor, the image inspecting apparatus comprising: a block dividing/adding section for dividing the image data output from the image sensor into blocks with a predetermined size of n×m (where m and n are natural numbers) and adding the image data within the divided blocks to obtain a block divided/added data; a statistics processing section for calculating an average value, a maximum value and a minimum value for the block divided/added data; and a quality determining section for determining a quality for the image data output from the image sensor based on whether or not at least one of a difference between the maximum value and the average value or a difference between the block divided/added data for an arbitrary block and the average value is greater than a quality threshold value multiplied by the difference between the minimum value and the average value, said average value, said maximum value and said minimum value for the block divided/added data being calculated by the statistics processing section, wherein the block dividing/adding section, the statistics processing section and the quality determination section are configured as a circuit.