hi_mpi_vpc_crop

Applicability

Product	Supported
Atlas A3 training products / Atlas A3 inference products	√
Atlas A2 training products / Atlas A2 inference products	√
Atlas 200I/500 A2 inference products	√
Atlas inference products	√
Atlas training products	☓

Description

Crops one or more regions of interest (ROIs) from an image. This API is asynchronous.

Prototype

hi_s32 hi_mpi_vpc_crop (hi_vpc_chn chn, const hi_vpc_pic_info *source_pic, hi_vpc_crop_region_info crop_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 A3 training products / Atlas A3 inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256. Atlas A2 training products / Atlas A2 inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256. Atlas 200I/500 A2 inference products : The value range of this parameter is [0, 128). The maximum number of channels is 128. Atlas inference products : The value range of this parameter is [0, 256). The maximum number of channels is 256.
source_pic	Input	Pointer to the source image information.
crop_info	Input	Information array of cropped ROIs. The array length is the same as that of the count value.
count	Input	Number of cropped ROIs. Value range: [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

Model	Restriction
Atlas inference products	Input image resolution and format: If the input image resolution is within the range of [10 x 6, 4096 x 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported. When the width or height of the input image is within the range of (4096, 8192], the supported formats are as follows: The following enum values of hi_pixel_format are supported: HI_PIXEL_FORMAT_YUV_400 = 0, // YUV400 8bit HI_PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1, // YUV420SP NV12 8bit HI_PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2, // YUV420SP NV21 8bit HI_PIXEL_FORMAT_YUV_SEMIPLANAR_422 = 3, // YUV422SP 8bit HI_PIXEL_FORMAT_YVU_SEMIPLANAR_422 = 4, // YVU422SP 8bit HI_PIXEL_FORMAT_YUV_SEMIPLANAR_444 = 5, // YUV444SP 8bit HI_PIXEL_FORMAT_YVU_SEMIPLANAR_444 = 6, // YVU444SP 8bit HI_PIXEL_FORMAT_YUYV_PACKED_422 = 7, // YUV422Packed YUYV 8bit HI_PIXEL_FORMAT_UYVY_PACKED_422 = 8, // YUV422Packed UYVY 8bit HI_PIXEL_FORMAT_YVYU_PACKED_422 = 9, // YUV422Packed YVYU 8bit HI_PIXEL_FORMAT_VYUY_PACKED_422 = 10, // YUV422Packed VYUY 8bit For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers. For details about the restrictions on the output image resolution, image format, width and height alignment, and buffer size, see Restrictions. It takes about 3 ms to process a single 1080p image. You can estimate the time consumption based on this rule. A 3840 x 2160 image equals to four 1080p images, which means that it takes about 12 ms to process a single 3840 x 2160 image.
Atlas A3 training products / Atlas A3 inference products Atlas A2 training products / Atlas A2 inference products Atlas 200I/500 A2 inference products	For details about the restrictions on the image resolution, image format, width and height alignment, and buffer size, see Restrictions. It takes about 3 ms to process a single 1080p image. You can estimate the time consumption based on this rule. A 3840 x 2160 image equals to four 1080p images, which means that it takes about 12 ms to process a single 3840 x 2160 image.

Model

Restriction

Atlas inference products

Input image resolution and format:

If the input image resolution is within the range of [10 x 6, 4096 x 4096], the input image formats described in Restrictions on Image Formats, Width and Height Alignment, and Buffers are supported.

When the width or height of the input image is within the range of (4096, 8192], the supported formats are as follows:

The following enum values of hi_pixel_format are supported:

HI_PIXEL_FORMAT_YUV_400 = 0,               // YUV400 8bit
HI_PIXEL_FORMAT_YUV_SEMIPLANAR_420 = 1,    // YUV420SP NV12 8bit   
HI_PIXEL_FORMAT_YVU_SEMIPLANAR_420 = 2,    // YUV420SP NV21 8bit 
HI_PIXEL_FORMAT_YUV_SEMIPLANAR_422 = 3,    // YUV422SP 8bit
HI_PIXEL_FORMAT_YVU_SEMIPLANAR_422 = 4,    // YVU422SP 8bit
HI_PIXEL_FORMAT_YUV_SEMIPLANAR_444 = 5,    // YUV444SP 8bit
HI_PIXEL_FORMAT_YVU_SEMIPLANAR_444 = 6,    // YVU444SP 8bit
HI_PIXEL_FORMAT_YUYV_PACKED_422 = 7,       // YUV422Packed YUYV 8bit
HI_PIXEL_FORMAT_UYVY_PACKED_422 = 8,       // YUV422Packed UYVY 8bit
HI_PIXEL_FORMAT_YVYU_PACKED_422 = 9,       // YUV422Packed YVYU 8bit
HI_PIXEL_FORMAT_VYUY_PACKED_422 = 10,      // YUV422Packed VYUY 8bit

For details about the restrictions on the width and height alignment, buffer size, and image format, see Restrictions on Image Formats, Width and Height Alignment, and Buffers.

For details about the restrictions on the output image resolution, image format, width and height alignment, and buffer size, see Restrictions.
It takes about 3 ms to process a single 1080p image. You can estimate the time consumption based on this rule. A 3840 x 2160 image equals to four 1080p images, which means that it takes about 12 ms to process a single 3840 x 2160 image.

Atlas A3 training products / Atlas A3 inference products

Atlas A2 training products / Atlas A2 inference products

Atlas 200I/500 A2 inference products

For details about the restrictions on the image resolution, image format, width and height alignment, and buffer size, see Restrictions.
It takes about 3 ms to process a single 1080p image. You can estimate the time consumption based on this rule. A 3840 x 2160 image equals to four 1080p images, which means that it takes about 12 ms to process a single 3840 x 2160 image.