An image-correspondence position detection device comprising an extractor 12
for extracting a sampling image of specific size from a pair of images, correlation
calculator 114 for generating a correlation value line and calculating an
integer correlation position and a decimal correlation position while sequentially
shifting the extraction position, measured correlation value calculator 118
for calculating a measured correlation value for a partial area at the integer
correlation position, estimated correlation value calculator 116 for calculating
an estimated correlation value assuming uniform shifting in each pixel of similar
sampling images by the difference between the integer correlation position and
the decimal correlation position for the partial area, and a correspondence degree
calculator 120 for calculating the degree of correspondence between pixels
in the partial area from the measured correlation value and the estimated correlation value.
