hi_mpi_vpc_crop_resize_resize_paste

Applicability

Product	Supported
Atlas 350 Accelerator Card	☓
Atlas A3 training product/Atlas A3 inference product	☓
Atlas A2 training product/Atlas A2 inference product	☓
Atlas 200I/500 A2 inference product	☓
Atlas inference product	√
Atlas training product	☓

Function Description

Crops an ROI from the input image, resizes the crop ROI twice, and pastes the resized ROI in the specified area of the output image. This API is asynchronous.

Prototype

hi_s32 hi_mpi_vpc_crop_resize_resize_paste(hi_vpc_chn chn, const hi_vpc_pic_info *source_pic, hi_vpc_crop_resize_resize_paste_region crop_resize_resize_paste_info[], hi_u32 count, hi_u32 *task_id, hi_s32 milli_sec)

Parameters

Parameter	Input/Output	Description
chn	Input	Channel ID for image processing. Atlas inference product: The value range is [0, 256). The maximum number of channels is 256.
source_pic	Input	Pointer to the source image information. If the resolution of the input image is in the range of 10 x 6 to 4096 x 4096 (inclusive), the input image format described in Restrictions on Image Formats, Width and Height Alignment, and Buffers is supported.
crop_resize_resize_paste_info	Input	Image cropping, resizing, and pasting information array. The array length is the same as that of the count value.
count	Input	Number of crop, resize, and paste ROIs. Must be in the range of [1, 256].
task_id	Output	Pointer to the task ID, which is used to identify a task.
milli_sec	Input	Timeout interval (ms). -1: blocking mode. 0: non-blocking mode. > 0: timeout interval (timeout mode). The timeout interval varies with the operating system. The deviation is generally within a time slice of an operating system. For example, if the time slice of an operating system is 4 ms and the value of milli_sec is set to 1, the actual timeout interval ranges from 1 ms to 5 ms. When the CPU load is high, the timeout interval may fluctuate.

Returns

0: success
Other values: failure. For details, see VPC Return Codes.

Restrictions

The number of output images is at least 1 and at most the number of crop ROIs. That is, if multiple ROIs are cropped from an input image, there can be one or more paste ROIs. This depends on the address specified in the hi_vpc_crop_resize_resize_paste_region struct.
When the input and output images are in ARGB8888, ABGR8888, RGBA8888, or BGRA8888 format, the A component value changes to 0 after being resized by this API.
The image resolution after each resizing must be within the range of [10 x 6, 4096 x 4096]. The resizing ratio of the width and height must be within the range of [1/32, 32].
The resizing algorithms configured for the two resizing must be the same.
For details about the restrictions on the VPC function, see Restrictions.
Due to restrictions on downsampling of YUV images, when the output image format is YUV420SP or YUV422SP, it is recommended that the top and left offset of the paste ROI be even numbers.

Parent topic: VPC