Abstract 1.Introduction 2.Theory 3.Analysis of Seidel Aberration by use of Discrete Wavelet Transform 4.Analysis of Wave-Aberration by Use of the Wavelet Transform 5.The new image fusion method applied in two wavelengths detection of biochip spot 6.Analysis of CCD Moiré Pattern to Micro-range Measurements Using the Wavelet Transform 7.Summary and future work