基于TMS320DM642白平衡图像处理系统

针对CMOS图像传感器输出的Bayer格式的图像数据，利用TI公司的TMS320DM642数字信号处理器的专用视频端口，可以实现图像捕获、数据传输的无缝连接的特点，构建了以DM642为核心的图像实时处理系统。在DM642中采用插值滤波的方法，将从Micron公司的MT9V403 CMOs图像传感器所捕获的10位Bayer格式图像数据，转换为24位RGB格式彩色图像数据，再根据当前背景计算出对图像R、G、B三个分量的调整系数，用这三个系数对整个图像红、绿、蓝三色的强度进行调整即白平衡图像处理，以修正外部光线所造成的误差。并且在一定显示分辨率范围内达到实时传输图像的要求。

Image Processing System for White Balance Based on TMS320DM642

In allusion to image of Bayer pattern from CMOS image sensor,design a real-time image processing system's to implement image capturing and data transmission using definite video port of digital signal processor TMS320DM642 of Ti Co. The 10 bit Bayer format image signal captured from MT9V403 CMOS censor of Micron Co. was converted to 24 bit RGB format image data by way of interpolation filter, we calculate the coefficients of red ,green and blue color based on current background, using these coefficients to adjust the intensive of three colors (called white balance) to correct the error caused by external light. We can transmit image real-time in certain range of display resolution.