中文说明：把矩阵转为图片BPM格式，利用UCI上的气体数据作为输入，输出储存为 b p m 图片格式，方便后续的识别分类算法，储存的图片为灰度图片。
English Description：
The matrix is converted to image BPM format, the gas data on UCI is used as input, and the output is stored in BPM image format, which is convenient for subsequent recognition and classification algorithm, and the stored image is gray image.