METHOD AND PROCESSOR FOR IMAGE PROCESSING

摘要

PURPOSE: To reduce the scale of hardware for processing wherein pixel data are computed from texture data and illuminance data on an image by preventing the pixel data from deviating in saturation and hue when the illuminance data approximates a maximum value. CONSTITUTION: This processor is provided with a comparison part 23 which compares digital data D2(illuminance data) with its threshold value Dt and its comparison result R is supplied to a composite coefficient calculation part 22 and a selection part 24. The composite coefficient calculation part 22 calculates a composite coefficientαhaving a fixed decimal point on the basis of the comparison result R. Further, the selection part 24 supplies a value Y selected from between fixed values C1 and C2 to compositing part 25 on the basis of the comparison result R. The compositing part 25 inputs digital data D1(texture data) as X and performs composition shown byαX+(1-α)Y by using the composite coefficientα.