Merge branch 'oper' into 'master'

update

See merge request codechina/operation-work!8

topics/计算机视觉/index.yml

@@ -4,6 +4,6 @@ aliases: 'CV,cv,computer vision'
 display_name: '计算机视觉'
 description: '计算机视觉是一门研究如何使机器“看”的科学，更进一步的说，就是是指用摄影机和电脑代替人眼对目标进行识别、跟踪和测量等机器视觉，并进一步做图形处理，使电脑处理成为更适合人眼观察或传送给仪器检测的图像。'
 logo: 'https://codechina.csdn.net/codechina/help-docs/uploads/95974d2aa386344c13710b6076d639fd/cv.png'
-background_image: 'https://codechina.csdn.net/codechina/help-docs/uploads/64a3d50bb38f182fbba36775440d2ef9/cv.png'
+background_image: 'https://codechina.csdn.net/codechina/help-docs/uploads/575bde92ce19dc61bd9f6fe26558bef3/cv.png'
 selected: true
 ---