tencent cloud

Basic Image Processing
Last updated: 2024-02-29 16:13:43
Basic Image Processing
Last updated: 2024-02-29 16:13:43

Overview

COS has integrated Cloud Infinite (CI), a one-stop professional multimedia solution that offers the image processing features as outlined below. For more information, see Image Processing Overview.
Service
Feature
Description
Basic image processing
Proportional scaling, scaling image to target width and height
Regular cropping, cropping and scaling, cropping to circle, smart face cropping
Adaptive rotation, regular rotation
Format conversion, GIF format optimization, progressive display
Quality change for JPG and WebP images
Image blurring
Image sharpening
Watermarking
Image information acquisition
Including EXIF information
Quick image format conversion, scaling, and cropping for thumbnail generation
Image style configuration for easy image management


Basic Image Processing

Scaling

Feature description

Proportional scaling, scaling image to target width and height, etc.

Method prototype

CosResult GetObject(const GetObjectByFileReq& request, GetObjectByFileResp* response);

Sample request

qcloud_cos::CosConfig config("./config.json");
qcloud_cos::CosAPI cos(config);
std::string bucket_name = "examplebucket-1250000000";

qcloud_cos::GetObjectByFileReq req(bucket_name, object_name, local_file);
// Scale an image to 50% of its original width and height
req.AddParam("imageMogr2/thumbnail/!50p", "");
qcloud_cos::GetObjectByFileResp resp;
qcloud_cos::CosResult result = cos.GetObject(req, &resp);
if (result.IsSucc()) {
// The call is successful. You can call the `resp` member functions to get the return content.
} else {
// The call failed. You can call the `result` member functions to get the error information.
}

Parameter description

Parameter
Description
Type
Required
req
GetObject operation request
GetObjectByFileReq
Yes
resp
GetObject operation response
GetObjectByFileResp
Yes

Cropping

Feature description

Similar to the scaling operation.
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