The API for calling the medianBlur API。
taskHandle Task handles are responsible for the interaction of the operator with the UCP architecture.dstImg The output picture, type, format and size are the same as the input picture.srcImg The input picture type supports U8C1 and format supports Y.maskWidth Operator parameters, the filter kernel size can be configured to 3, 5, or 7.0 means the API was successfully executed, otherwise the execution failed.