图5， CIE 1931标准色度观察者X刺激值平滑计算中的一级阶差变化

FIG 5, CIE 1931 standard colorimetric observer tristimulus values ​​X a stepped smooth change map calculation; wherein X is a stimulus value FIG FIG; b, c two yellow lines of FIG stimulus value X is a stepped FIG. , a red line is smooth stepped FIG X stimulus value; red line C is to calculate large and small smoothing a step difference stimulus value X in FIG.; FIG. D is a stimulus value X overlap FIG its smoothed value, the red stimulus value X is smooth FIG values, the following yellow line stimulus value X in FIG.

Figure 5, CIE 1931 Standard Chroma Observer X stimulus in the smoothing calculation of the first order difference change graph; where a graph is X stimulus value graph; ;d graph is the X stimulus value overlaps with its smoothing value, the red line is the X stimulus value smoothing value graph, the yellow line below is the X stimulus value graph.

Fig. 5, the first-order difference change chart of CIE 1931 standard colorimetric observer in the smooth calculation of X stimulus value, in which a chart is the X stimulus value chart; the yellow line of B and C charts is the first-order difference chart of X stimulus value, and the red line is the first-order difference chart of smooth x stimulus value; the red line of C chart is the first-order difference chart of large and small smooth x stimulus value; D chart is the overlap chart of X stimulus value and its smooth value, and the red line is the smooth value of X stimulus value Figure, the yellow line below is the figure of X stimulus value.