数码相机的图像预处理算法

Image Pre-process Algorithm of Digital Camera

数码相机是当今社会广泛普及的数码产品,但其采集来的原始图片存在一些噪声和非线性失真,以及硬件上的缺陷或者算法中的错误,因此需在压缩和传输之前进行处理,即图像预处理,使之成为基本合格的图像信息。这些处理过程包括自动曝光控制、白平衡、双线性插补、伽玛校正、滤波、空间转换及色彩校正等,通过这些算法可以大大改善数码相机的图片质量,达到人们期望的效果。这些算法,已有成熟的流程和具体的操作步骤,在具体的实验环境中进行计算机仿真,可以明显地看出图片经过处理后效果大为改善,从而更加确定图像预处理的必要性。

The digital camera is used widely today, but there is still some noise and nonlinear distortion in the images captured by the digital camera, and limitations of the hardware and errors of algorithm still exist as well, so pre - process is required for the images before compressing and transmitting in order to get right image information. It＇s called Image Pre - process. The processing consists of auto exposure, bilinear interpolation, gamma correction, white balance, filter, space convert, color correction and so on, which can make the image of digital camera better so that make the users satisfied. The pre - process blocks are already formed now, through computer simulation under certain conditions, the quality of images will be improved greatly comparing with the primary ones.