History
Introduction
API Category
Making API Requests
Region APIs
Instance APIs
Cloud Hosting Cluster APIs
Image APIs
Instance Launch Template APIs
Placement Group APIs
Key APIs
Security Group APIs
Network APIs
Data Types
Error Codes
GET /<ObjectKey>?imageMogr2/contrast/<value> HTTP/1.1Host: <BucketName-APPID>.cos.<Region>.myqcloud.comDate: <GMT Date>Authorization: <Auth String>
PUT /<ObjectKey> HTTP/1.1Host: <BucketName-APPID>.cos.<Region>.myqcloud.comDate: GMT DateAuthorization: Auth StringPic-Operations:{"is_pic_info": 1,"rules": [{"fileid": "exampleobject","rule": "imageMogr2/contrast/<value>"}]}
POST /<ObjectKey>?image_process HTTP/1.1Host: <BucketName-APPID>.cos.<Region>.myqcloud.comDate: GMT DateContent-length: SizeAuthorization: Auth StringPic-Operations:{"is_pic_info": 1,"rules": [{"fileid": "exampleobject","rule": "imageMogr2/contrast/<value>"}]}
参数 | 含义 |
ObjectKey | 对象文件名,例如 folder/sample.jpg。 |
/contrast/<value> | 图片对比度调节功能,value 为对比度参数值,取值范围为[-100, 100]的整数。 取值<0:降低图片对比度。 取值 = 0:不调整图片对比度。 取值>0:提高图片对比度。 |
/ignore-error/1 | 当处理参数中携带此参数时,针对文件过大、参数超限等导致处理失败的场景,会直接返回原图而不报错。 |
http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?imageMogr2/contrast/-50

http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?q-sign-algorithm=<signature>&imageMogr2/contrast/-50
http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?q-sign-algorithm=sha1&q-ak=AKID********************&q-sign-time=1593342360;1593342720&q-key-time=1593342360;1593342720&q-header-list=&q-url-param-list=watermark%252f1%252fimage%252fahr0cdovl2v4yw1wbgvzlteyntewmdawmdqucgljc2gubxlxy2xvdwquy29tl3nodwl5aw4uanbn%252fgravity%252fsoutheast&q-signature=26a429871963375c88081ef60247c5746e834a98&watermark/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAwMDQucGljc2gubXlxY2xvdWQuY29tL3NodWl5aW4uanBn/gravity/southeast
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