IMAGE NORMALIZATION DEVICE, IMAGE NORMALIZATION METHOD, COMPUTER READABLE RECORDING MEDIUM IN WHICH PROGRAM IS RECORDED AND PROGRAM

摘要

PPROBLEM TO BE SOLVED: To normalize a satellite image and to use a threshold in common for extraction in an image normalization device which performs preprocessing of processing for extracting an area of a reflector being an object from the satellite image. PSOLUTION: A histogram calculation part 4 calculates average and standard deviation before normalization for an original image and a normalization parameter calculation part 8 calculates average and standard deviation after the normalization so that distribution of areas including the object is extended. A normalization LUT calculation part 11 calculates luminance after the normalization corresponding to luminance before the normalization and a normalization image generation part 13 generates a normalization image based on its result. The normalization image is devoted to extraction processing of an object area using a common threshold. PCOPYRIGHT: (C)2005,JPO&NCIPI