图像的亮度对比度增强，可对较暗的图像进行亮度增强
资源文件列表
brightness_enhancing.m , 445
enhanced image/hongkong_be.jpg , 97159
enhanced image/house_be.jpg , 17885
enhanced image/ny1_be.jpg , 104611
enhanced image/ny1_res.png , 877284
original image/hongkong_my.BMP , 1096854
original image/house_my.BMP , 499554
original image/ny1_my.BMP , 1034454
original image/train_my.BMP , 720054