Patent ID: 8243161

Claim:
A repetitive object detecting device comprising: a difference calculation unit configured to carry out, with respect to a plurality of lines, a process for setting as reference pixel data pixel data located at an end of a plurality of pieces of pixel data within a certain range in one line of a video signal, and calculating a difference between the reference pixel data and each piece of pixel data within a range from pixel data separated from the reference pixel data by two pixels to pixel data separated from the reference pixel data by the maximum number of pixels in the plurality of pieces of pixel data so as to obtain difference data by each of separated pixel numbers; an adding unit configured to add the difference data obtained with respect to the plurality of lines by the difference calculation unit by each of the separated pixel numbers so as to obtain added data by each of the separated pixel numbers; a horizontal direction accumulating unit configured to sequentially delay the added data obtained by each of the separated pixel numbers for a time corresponding to one pixel within a range from a time corresponding to one pixel to a time corresponding to a pixel number generated by subtracting a pixel number one from each of the separated pixel numbers, and accumulate added data before the delaying and all delayed pieces of added data so as to obtain a horizontal accumulated value by each of the separated pixel numbers in which added data obtained by each of the separated pixel numbers is accumulated in a horizontal direction; and a small and large comparing unit configured to carry out a small and large comparison with respect to the horizontal accumulated value obtained by each of the separated pixel numbers by the horizontal direction accumulating unit so as to decide whether or not the reference pixel data is pixel data which is located in a repetitive object including a certain repetitive pattern.