1·Printing effect research include three parts: printing gloss, color density and color deviation, color efficiency, gray level.
对印刷效果的研究包括三个方面：印刷光泽度、色密度和色偏、色效率、灰度。
2·The experiment results show that the system can realize infrared image gray level transformation, suppress background and upgrade target in a certain extent.
实验结果表明，该系统能很好地实现红外图形灰度变换，并在一定程度上抑制了背景，提升了目标。
3·To verify the accuracy of this method, the results are compared with the MTF values obtained by the original method, in which the gray level of the test chart pictures are read and calculated.
将这种方法所测量的结果与实际读取胶片时由分辨率板的图案中黑白条纹灰度值计算出的MTF值进行了比较，验证了这种方法的准确性。
4·Pseudocolor processing will change the gray level image to color image.
而伪彩处理则可把单调的灰度图像转换成彩色的图像显示出来；
5·The characteristics of low light level (LLL) image were analyzed in aspects of imaging process gray level distribution and correlativity of picture element in space and time of LLL image.
从微光图像的成像过程、灰度分布和像素空间与时间相关性等几个方面对微光图像特征作较系统的分析。