A colorcast detection method based on equivalent circle is applied, which overcomes the limit of traditional methods of detecting image colorcast.
采用一种基于等效圆的偏色检测方法，克服了传统方法在图像偏色检测中的局限性。
2
Currently most vendors have adopted in Harbin City-jet inkjet light box piece back, Its shortcomings are obvious, First, he degree of color reproduction is poor, basically colorcast;
目前哈市商家大多都采用背喷式喷绘灯箱片，其缺点十分明显，第一，他的色彩还原度差，基本是偏色的；
3
A film analyzing system is briefly introduced in the paper, the reasons for leading to colorcast from input to output, optimal setting of the system and color correcting method are discussed.