Patent ID: 8964069
Filing Date: 2015-02-24
Classification: H04N

Abstract:
1. An image processing device comprising: a defect correcting circuit configured to execute defect correction on a target pixel; a noise-reduction processing circuit configured to execute noise reduction processing on the target pixel and a plurality of peripheral pixels that are pixels for a same color as the target pixel and arranged around the target pixel; and a first selector that selects an output by the defect correcting circuit or an output by the noise-reduction processing circuit, wherein the defect correcting circuit includes: a contrast determining circuit that determines a level of contrast by comparing a numerical value width between a maximum and a minimum of signal values of the peripheral pixels and a predetermined threshold; an averaging circuit that executes averaging processing for the signal values; and a second selector that selects, according to the determination by the contrast determining circuit, a first correction value obtained through the averaging processing for the signal values of the peripheral pixels or a second correction value which is a value closest to a signal value of the target pixel among the signal values of the peripheral pixels; wherein the defect correcting circuit and the noise-reduction processing circuit perform processing in parallel, when the first selector determines the target pixel is a defect, the first selector selects the output from the second selector, and when the first selector determines the target pixel is not a defect, the first selector selects the output from the noise-reduction processing circuit.