2. Intuitively convey information about process quality status;

After studying the quality fluctuation, we can master the process and determine where to focus on quality improvement.

Extended data:

Image histogram related categories:

For the gray histogram used for image segmentation, the existing gray histogram shape is easily disturbed by noise, so it is urgent to study a gray histogram image segmentation method that eliminates noise interference and has strong adaptability.

For the color histogram used in image retrieval, the traditional color histogram description method has some problems, such as high feature dimension, great influence by illumination, inability to express the correlation between similar colors and loss of spatial position information.

Therefore, it is necessary to study the color histogram method which comprehensively considers various factors. The existing methods based on word bag still have some shortcomings in the construction of visual words and the statistics of histogram, which makes the final visual word histogram unable to express the image category characteristics well. Therefore, it is necessary to study a new algorithm based on word bag to solve these problems.

Baidu Encyclopedia-Image Histogram

Baidu encyclopedia-histogram