JP2003348607A5 - - Google Patents

Claims (8)

An image sensor for capturing a subject image;
Displacement means for periodically displacing the image sensor and outputting an image signal of the subject image from the image sensor for each displacement position;
An image processing means for inputting an image signal of the imaging element for each displacement position by the displacement means, and rearranging the image signal to compose an image;
Of the image data synthesized by the image processing means, for the image data synthesized based on the image signal from the defective pixel of the image sensor, the defective pixel is used as a reference pixel in the rearranged image signal. An image pickup apparatus comprising: defective pixel correction means that performs correction processing of the defective pixel that differs depending on a mutation position by using an image signal of the same color and the latest among the image signals excluding the image signal . The displacement unit displaces the pixel of the image signal output from the image sensor by displacing the position of the image sensor at 3 × 3 positions at 2/3 pixel intervals, and the defective pixel correction unit is The imaging apparatus according to claim 1, wherein a defective pixel correction value is obtained based on an image signal at an arbitrary position different depending on a pixel shift position of the output image signal. The defective pixel correcting means has a signal level of four pixels of the same color of the upper, lower, left, and right colors with respect to a defective pixel positioned diagonally up and down with respect to the middle pixel among the pixel shift positions of the image signal output from the image sensor. A correction value obtained by multiplying the sum by 1/2 is obtained, and a correction value obtained by adding the signal levels of four pixels of the same color in the vertical and horizontal directions to the defective pixel located in the vertical and horizontal directions with respect to the middle pixel is obtained. A correction value obtained by multiplying the sum of the signal levels of two pixels of the same color at a distance of four pixels left and right with respect to the defective pixel located at ½ is corrected for the corresponding defect image by these correction values. The imaging apparatus according to claim 2, wherein processing is performed. The image sensor has a color filter for obtaining color discrimination information,
The defective pixel correcting unit performs different correction processing on the defective pixel of the image synthesized by the image processing unit according to the color discrimination information acquired by the color filter and the displacement position by the displacement unit. The imaging apparatus according to claim 1. When the defective pixel correction unit determines that the defective pixel is G (green) based on the color determination information, the defective pixel correction unit multiplies the signal level of four pixels of the same color in the upper, lower, left, and right colors by 1/4. The imaging apparatus according to claim 4, wherein a correction value is obtained and correction processing is performed using the correction value. The defective pixel correction unit further includes a position information conversion unit, converts the position information of the image signal after pixel shift by the position information conversion unit, divides the image signal into a plurality of images, and converts the divided image signals into The imaging apparatus according to claim 1, which processes in order. A microscope on which a subject image is projected onto the image sensor;
Light shielding means for selecting whether or not to project the subject image onto the image sensor;
A defective pixel detecting means for detecting a defect for each pixel of an image signal output from the imaging element in a state where the projection of the subject image onto the imaging element is shielded by the light shielding means;
The imaging apparatus according to claim 1, further comprising a defective pixel correction unit that performs correction processing on the defective pixel detected by the defective pixel detection unit. The image pickup device for picking up the subject image is periodically displaced by the displacement means, and the image signal of the subject image is output from the image pickup device for each displacement position, and the image signal for each displacement position is rearranged. An imaging method for combining images,
An imaging method comprising: performing different correction processing on image data synthesized based on an image signal from a defective pixel of the imaging element among the synthesized image data according to a displacement position by the displacement means. .