画像確率モデルに基づく焦点ずれ劣化JPEG画像の鮮明化

抄録

The out-of-focus blurred JPEG images are degraded by being out-of-focus as well as blocking artifacts and mosquito noise caused by quantization on block DCT domain. The purpose of this paper is to sharpen out-of-focus JPEG images without enhancing the blocking artifacts and the mosquito noise. This proposed method is based on the edge-adaptive restoration method: the regularizing operator depends on the edge orientation, and the regularizing parameter depends on the local activity. The variance of the quantization on block DCT domain is taken into consideration.