CAJ | 학술논문

针对颜色信号在进行跨媒体传输时出现的失真问题，提出一种基于球坐标及三角形插值的色域映射算法。首先，在球坐标系内选取出目标色域的边界颜色点以作为三角形插值的节点；其次，通过插值节点预查找方法选取出3个符合插值要求的最优节点；最后，使用三角形插值计算得到待映射颜色信号对应的目标色域边界。在 EPSON 及HP 打印机上的实验结果表明本文算法具有良好的可靠性、计算精度及执行效率，可广泛应用于各类呈色设备及彩色图像的色域映射中。
침대안색신호재진행과매체전수시출현적실진문제，제출일충기우구좌표급삼각형삽치적색역영사산법。수선，재구좌표계내선취출목표색역적변계안색점이작위삼각형삽치적절점；기차，통과삽치절점예사조방법선취출3개부합삽치요구적최우절점；최후，사용삼각형삽치계산득도대영사안색신호대응적목표색역변계。재 EPSON 급HP 타인궤상적실험결과표명본문산법구유량호적가고성、계산정도급집행효솔，가엄범응용우각류정색설비급채색도상적색역영사중。
In order to solve the distortion problem of color signal in cross media reproduction process,a gamut mapping algo-rithm based on spherical coordinates and triangular interpolation was proposed.Firstly,the algorithm chooses the boundary color samples of target gamut as the triangular interpolation nodes.Secondly,three optimal interpolation nodes are selected through a pre-search process.Finally,the algorithm calculates the correspondent gamut boundary point of the mapping color by triangular interpo-lation.The experimental results demonstrate that the algorithm has good calculation precision and efficiency,and can be used in the color mapping process of different color devices and images.