研制了一种色差计，并应用于金属装饰。该系统以连续方式测量打印图像中多达200个斑点的三刺激颜色。这可以用于全色调、半色调或墨水重叠的地方。测量值独立于压力机速度，并以易于理解的彩色图形呈现给压力机操作员。使用了类似CIELAB的颜色空间。这意味着，当且仅当人眼看到颜色偏差时，才会提醒压力机操作员。

A COLOR DIFFERENCE METER HAS BEEN DEVELOPED AND APPLIED IN METAL DECORATING. THE SYSTEM MEASURES TRI- STIMULUS COLOR IN A SEQUENTIAL MANNER UP TO 200 SPOTS IN THE PRINTED IMAGE. THIS CAN BE DONE FOR FULL-TONES, HALF-TONES, OR WHERE INKS OVERLAP. THE MEASUREMENTS ARE INDEPENDENT OF PRESS-SPEED AND ARE PRESENTED TO THE PRESS OPERATOR IN EASILY UNDERSTANDABLE COLOR GRAPHICS. A CIELAB-LIKE COLOR SPACE IS USED. THIS MEANS THAT THE PRESS OPERATOR IS ALERTED IF, AND ONLY IF, COLOR DEVIATIONS ARE BECOMING VISIBLE TO THE HUMAN EYE.