Patent ID: 8724030

Claim:
An image processing apparatus, for sharpening an edge boundary of an image, comprising: a transient improvement (TI) circuit, for receiving a plurality of original pixel data; wherein the original pixel data include an original target pixel data, and each of the original pixel data includes an original luma signal, a first original chroma signal and a second original chroma signal; the TI circuit further performing a TI process on the original target pixel data to output a TI pixel data corresponding to the original target pixel data; wherein the TI pixel data includes a TI luma signal, a first TI chroma signal and a second TI chroma signal; and a color protection circuit, for comparing the first TI chroma signal with each of the first original chroma signals of the original pixel data, and comparing the second TI chroma signal with each of the second original chroma signals of the original pixel data to correspondingly generate a weighting value, and outputting a first adjusted chroma signal and a second adjusted chroma signal according to the weighting value, the first original chroma signal, the second original chroma signal, the first TI chroma signal and the second TI chroma signal.