用于数字相机的CCD颜色插值算法研究

讨论了基于Bayer颜色滤波阵列的CCD图像传感器的几种颜色插值算法。从获得图像的质量、处理时间以及获得图像的信噪比等角度讨论了几种典型的插值算法，包括邻域插值、线性插值、相关线性插值、立方卷积插值和B样条插值。通过仿真实验研究，线性插值方法和相关线性插值方法在运算速度和图像信噪比方面都具有很好的品质，是数字相机插值的最佳选择。

Study of DSC's CCD Color Interpolation Algorithm

The paper discussed interpolation technique applied to the CCD image sensors for digital still cameras. Several kinds of interpolation methods are introduced in terms of three aspects:the quality of the images, the processing time and the SNR of the images. Five algorithms were analyzed:nearest neighbor interpolation, linear interpolation, linear interpolation taking correlation into consideration, cubic convolution interpolation and B-spline interpolation. Linear interpolation algorithm and linear interpolation algorithm taking correlation into consideration can gain higher SNR and good images quality and are suitable for digital still cameras.