摘要
由于受图像传感器光谱响应灵敏度、镜头光谱透过率等因素影响,数字成像系统的成像过程可能会带来图像颜色的失真.而图像的颜色信息往往是进行图像分析的重要依据,对数码成像系统的彩色还原性评价、检测以及校正方法进行研究具有重要的意义.在CIELAB色度空间采用数学方法,求出校正矩阵最优解,进而对图像的色彩进行校正.通过对标准色块标板图像进行实验,发现最优解法校正后的图像各个色块色差值均有减小,实现了对标准色板全部色块颜色的综合校正.
Color distortion may exist during image processing,due to spectral response sensitivity of image sensor and transmittance spectrum of lens.Color information plays a crucial role in image analysis.Therefore,as for digital imaging system,it is useful to study evaluation,detection and correction methods of color reappearance ability.Here,it proposes a novel color correcting approach that can significantly reduces color distortion.It corrects the color of image by computing optimal correction matrix in CIELAB color space with mathematical method.The experimental results of standard color plate pictures show that the optimal solution algorithm can reduce the value of color difference significantly in every color block,and an integrated correction of color distortion has achieved.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2010年第3期384-388,共5页
Journal of Hehai University：Natural Science
基金
国家重点基础研究发展计划(973计划)资助项目(2009CB724006)
关键词
数字成像系统
色差
校正
最优解
digital imaging system
color difference
correction
optimal solution
