Patent ID: 8280139

Claim:
A cell feature amount calculating apparatus comprising: an image input unit that inputs an image of a cell; a cell nucleus region extracting unit that extracts a cell nucleus region of said cell from said image; a standard contour length calculating unit that calculates a standard contour length of said cell nucleus region; a contour length sequence calculating unit that extracts, for each threshold value of a plurality of different threshold values, a specific region which is a region having a pixel value larger than or equal to said threshold value from said cell nucleus region, and calculates a contour length sequence by calculating a contour length of the specific region; and a contour complexity calculating unit, comprising a processor, that calculates a feature amount of said cell based on said standard contour length and said contour length sequence; wherein said contour complexity calculating unit selects only said contour lengths having lengths larger than or equal to said standard contour lengths from said contour length sequence, and calculates a sum of the differences of said selected contour lengths and said standard contour lengths as said feature amount.