Overview
CI uses the imageInfo API to query an image’s basic information such as its format, width, and height.
Use Limits
The input image cannot be larger than 32 MB.
The width and height of the input image cannot exceed 30,000 pixels and the total number of pixels cannot exceed 250 million. The width and height of the output image cannot exceed 9,999 pixels.
For an input animated image, the total number of pixels (Width x Height x Number of frames) cannot exceed 250 million pixels.
Parameters
Request parameters
Operation: imageInfo
|
| URL of the input image, formatted as <BucketName-APPID>.cos.<Region>.myqcloud.com/<picture name> Example: examplebucket-1250000000.cos.ap-shanghai.myqcloud.com/picture.jpeg |
Response parameters
|
| Image format such as png or gif |
| Width of the image, in pixels |
| Height of the image, in pixels |
| |
| MD5 checksum of the image |
| Number of frames. For static images, this value is 1. |
Examples
Example 1: public-read
Request
http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?imageInfo
Response
{"format": "jpeg", "width": "960", "height": "540", "size": "158421", "md5": "77a16fa70e2eba652fb42e8a639c52f2", "photo_rgb": "0x736246"}
Example 2: private-read with a signature carried
This example obtains the average hue in the same way as in the example above except that a signature is carried. The signature is joined with other parameters using an ampersand (&):
http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?q-sign-algorithm=<signature>&imageInfo
Notes
To prevent unauthorized users from accessing or downloading the input image by using a URL that does not contain any processing parameter, you can add the processing parameters to the request signature, making the processing parameters the key of the parameter with the value left empty. The following is a simple example for your reference (it might have expired or become inaccessible). For more information, please see Request Signature. 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