IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND PROGRAM

摘要

To suppress influence of a rounding error and acquire a more highly precise filter processing result, by performing convolution processing in order from a divided filter having a smaller sum of filter coefficient among divided filters, shifting a position of the decimal point of a filter processing result in a fixed-point format to generate an intermediate image, integrating the filter processing result having a larger bit width of a decimal part, and substantially reflecting a processing result of the decimal part.

主权项

1. An image processing device comprising:
a dividing unit configured to divide a filter into divided filters of a predetermined number of taps; a filter processing unit configured to perform filter processing for an input image using the divided filters; and an integrating unit configured to integrate a processing result of each divided filter, wherein the integrating unit integrates the processing result of the each divided filter in an order according to a value of a filter coefficient of the divided filter.