准积分法构建视觉可感知三维色域的研究

为了更全面地评价显示器的色重显性能,用准积分法构建了人类视觉可感知三维色域.该算法用CIE标准色度观察者观察、混配等能单色辐射测得的CIE 1931 XYZ色度系统光谱三刺激值,按某一波长间隔求累加和,来近似实现未知函数表达式的多重积分运算.构建的色域囊括了人眼能识别的全部颜色,是宽色域、高动态范围显示设备的目标色域.还用三棱锥体积求和算法计算出该色域体积,验证了算法的可行性.进而由实测的LCD电视显示器数据,用同样方法计算其三维色域,并与视觉可感知三维色域进行定量比较.这些工作表明,本算法可为定量评价显示器的三维色域提供理论依据和可行算法,用这种方法给出的显示设备三维色域覆盖率可克服通常在二维色度图计算色域覆盖率的局限性.

The visually perceptible three-dimensional color gamut based on the quasi-integration method

In order to have a more complete evaluation of the display color reproduce, a quasi-integral method to construct a three-dimensional human visual perceptible color gamut is proposed.The algorithm uses CIE 1931 XYZ color system spectral tristimulus values which can be measured by the CIE standard colorimetric observer observation and mixed monochromatic radiation to seek to achieve the approximate expression of multiple unknown function integral calculation according to a wavelength interval accumulation.The constructed gamut includes all the colors the human can recognize and it is the target gamut of wide color gamut and high dynamic range display device.The color gamut volume is also calculated by using the triangular pyramid summation method to verify the feasibility of the algorithm.Furthermore, the paper uses the same method to calculate the three-dimensional color gamut through the measured LCD TV display data, and compares with the visual perception of three-dimensional color gamut.The work shows that the algorithm can provide a theoretical basis and practical algorithm for the quantitative evaluation of three-dimensional color gamut of display and overcome the limitations of color gamut coverage calculated in the two-dimensional chromaticity diagram.