Pixel signal processing apparatus and method



<P>PROBLEM TO BE SOLVED: To provide a pixel signal processing apparatus capable of suppressing the generation of a false color in the result of interpolation even in a region wherein no similarity relation exists in behaviors of changes in color components, and carrying out the interpolation at all times by using an optimum interpolation method independently of ways of changes in color component values of pixels around a target pixel. <P>SOLUTION: The pixel signal processing apparatus is provided with two interpolation means (31, 12) for interpolating deficient color component values by adopting methods different from each other and interpolates the deficient color component value by combining (13) the deficient color component values calculated by the two interpolation means. One of the interpolation means (31) may perform the interpolation by a regression analysis or linear interpolation. The other interpolation means (12) may perform the interpolation utilizing the similarity of a change between different colors. <P>COPYRIGHT: (C)2005,JPO&NCIPI
【課題】 各色成分の変化の様子に相似の関係がない領域においても補間結果に偽色が発生するのを抑制することができ、また注目画素の周囲の画素の色成分値の変化の仕方に拘らず常に最適の補間方法で補間を行うことができる画素信号処理装置を提供する。 【解決手段】 互いに異なった方法で、不足色成分値を補間する補間手段(31、12)を二つ備え、上記二つの補間手段で計算した不足色成分値を合成する(13)ことで、不足色成分値の補間をする。一方の補間手段(31)が、回帰分析による補間又は線形補間を行うものであり、他方の補間手段(12)が異なる色相互間の変化の相似性を利用した補間を行うものであっても良い。 【選択図】 図4




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