Image processing apparatus, image processing method, and program

Abstract

In an image processing apparatus, a defect detection unit detects a defective pixel and a defect level thereof by comparing a maximum pixel value detected at each pixel position of a plurality of images captured via an image taking operation performed a plurality of times by an image sensor with a threshold value for detecting white defective pixels, and / or by comparing a minimum pixel value detected at each pixel position of the plurality of images with a threshold value for detecting black defective pixels. A defective pixel selection unit selects a predetermined plurality of defective pixels with high defect degrees, and registers defect data associated with the predetermined plurality of selected defective pixels in the defect data table. A defect correction unit corrects pixel values of pixels of the image output from the image sensor, in accordance with the defect data registered in the defect data table.

Description

[0001] Cross References to Related Applications [0002] The present invention contains subject matter related to Japanese Patent Application JP2006-313183 filed in the Japan Patent Office on Nov. 20, 2006, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an image processing device, an image processing method, and an image processing program, and more particularly, to an image processing device, an image processing method, and an image processing device suitable for correcting defective pixels in a still camera or video camera in a very reliable manner program. Background technique [0004] In a digital still camera, a digital video camera, or the like, an image is sensed and an optical image signal is converted into a corresponding electrical signals to capture images. [0005] Not all pixels of an image sensor are necessarily normal, and some pixels may be defective. If a defect occurs, the image ...

AI Technical Summary

Problems solved by technology

If a defect occurs, the image output of an image sensor with a defective pixel will have pixel values ​​that deviate from the correct value at the defective pixel, resulting in an unnatural image

[0006] It should be noted that the pixels of the image sensor are defective, and the defect of the image sensor causes the image output of the image sensor to have abnormal points corresponding to the defective pixels

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