Patent ID: 9495611
Filing Date: 2016-11-15
CPC Classification: G06K,G06T

Claim Text:
1. An image processing apparatus for searching for corresponding points between a first image and a second image, comprising: a window setting portion configured to set a window for each of the first image and the second image; a phase information extraction portion configured to extract phase information by subjecting a representation included in each set window to frequency decomposition; a corresponding points determination portion configured to determine corresponding points between the first image and the second image based on comparison of the phase information extracted from each set window; and a window size control portion configured to cause the window setting portion to set windows different in size in accordance with a frequency used for calculation of the frequency decomposition, the window size control portion causing the window setting portion to set a window of a first size in response to a first frequency and to set a window of a second size smaller than the first size in response to a second frequency higher than the first frequency, wherein the window size control portion changes a size of the window in line with a power of 2, in accordance with a frequency used for calculation of the frequency decomposition.