VPI - Vision Programming Interface

0.4.4 Release

HarrisCornerDetector.h
Go to the documentation of this file.
1 /*
2  * Copyright 2019 NVIDIA Corporation. All rights reserved.
3  *
4  * NOTICE TO LICENSEE:
5  *
6  * This source code and/or documentation ("Licensed Deliverables") are
7  * subject to NVIDIA intellectual property rights under U.S. and
8  * international Copyright laws.
9  *
10  * These Licensed Deliverables contained herein is PROPRIETARY and
11  * CONFIDENTIAL to NVIDIA and is being provided under the terms and
12  * conditions of a form of NVIDIA software license agreement by and
13  * between NVIDIA and Licensee ("License Agreement") or electronically
14  * accepted by Licensee. Notwithstanding any terms or conditions to
15  * the contrary in the License Agreement, reproduction or disclosure
16  * of the Licensed Deliverables to any third party without the express
17  * written consent of NVIDIA is prohibited.
18  *
19  * NOTWITHSTANDING ANY TERMS OR CONDITIONS TO THE CONTRARY IN THE
20  * LICENSE AGREEMENT, NVIDIA MAKES NO REPRESENTATION ABOUT THE
21  * SUITABILITY OF THESE LICENSED DELIVERABLES FOR ANY PURPOSE. IT IS
22  * PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND.
23  * NVIDIA DISCLAIMS ALL WARRANTIES WITH REGARD TO THESE LICENSED
24  * DELIVERABLES, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY,
25  * NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE.
26  * NOTWITHSTANDING ANY TERMS OR CONDITIONS TO THE CONTRARY IN THE
27  * LICENSE AGREEMENT, IN NO EVENT SHALL NVIDIA BE LIABLE FOR ANY
28  * SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OR ANY
29  * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
30  * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
31  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
32  * OF THESE LICENSED DELIVERABLES.
33  *
34  * U.S. Government End Users. These Licensed Deliverables are a
35  * "commercial item" as that term is defined at 48 C.F.R. 2.101 (OCT
36  * 1995), consisting of "commercial computer software" and "commercial
37  * computer software documentation" as such terms are used in 48
38  * C.F.R. 12.212 (SEPT 1995) and is provided to the U.S. Government
39  * only as a commercial end item. Consistent with 48 C.F.R.12.212 and
40  * 48 C.F.R. 227.7202-1 through 227.7202-4 (JUNE 1995), all
41  * U.S. Government End Users acquire the Licensed Deliverables with
42  * only those rights set forth herein.
43  *
44  * Any use of the Licensed Deliverables in individual and commercial
45  * software must include, in the user documentation and internal
46  * comments to the code, the above Disclaimer and U.S. Government End
47  * Users Notice.
48  */
49 
56 #ifndef NV_VPI_ALGORITHMS_HARRIS_CORNER_DETECTOR_H
57 #define NV_VPI_ALGORITHMS_HARRIS_CORNER_DETECTOR_H
58 
59 #include "../Export.h"
60 #include "../Status.h"
61 #include "../Types.h"
62 
63 #include <stdint.h>
64 
65 #ifdef __cplusplus
66 extern "C" {
67 #endif
68 
79 typedef struct
80 {
82  uint32_t gradientSize;
83 
85  uint32_t blockSize;
86 
89 
91  float sensitivity;
92 
96 
98 #define vpiCreateHarrisCornerDetector VPI_APINAME(vpiCreateHarrisCornerDetector, 004)
99 #define vpiSubmitHarrisCornerDetector VPI_APINAME(vpiSubmitHarrisCornerDetector, 004)
100 
112 VPI_PUBLIC VPIStatus vpiCreateHarrisCornerDetector(VPIBackend backend, uint32_t inputWidth, uint32_t inputHeight,
113  VPIPayload *payload);
114 
134  VPIArray outFeatures, VPIArray outScores,
135  const VPIHarrisCornerDetectorParams *params);
136  // end of VPI_HarrisDetector
138 
139 #ifdef __cplusplus
140 }
141 #endif
142 
143 #endif // NV_VPI_ALGORITHMS_HARRIS_CORNER_DETECTOR_H
VPIHarrisCornerDetectorParams::strengthThresh
float strengthThresh
Specifies the minimum threshold with which to eliminate Harris Corner scores.
Definition: HarrisCornerDetector.h:88
VPIBackend
VPIBackend
VPI Backend types.
Definition: Types.h:89
vpiCreateHarrisCornerDetector
VPIStatus vpiCreateHarrisCornerDetector(VPIBackend backend, uint32_t inputWidth, uint32_t inputHeight, VPIPayload *payload)
Creates a Harris Corner Detector payload.
VPIStream
struct VPIStreamImpl * VPIStream
A handle to a stream.
Definition: Types.h:190
VPIHarrisCornerDetectorParams::gradientSize
uint32_t gradientSize
Gradient window size.
Definition: HarrisCornerDetector.h:82
vpiSubmitHarrisCornerDetector
VPIStatus vpiSubmitHarrisCornerDetector(VPIStream stream, VPIPayload payload, VPIImage input, VPIArray outFeatures, VPIArray outScores, const VPIHarrisCornerDetectorParams *params)
Submits Harris Corner Detector operation to the stream associated with the payload.
VPIImage
struct VPIImageImpl * VPIImage
A handle to an image.
Definition: Types.h:196
VPIPayload
struct VPIPayloadImpl * VPIPayload
A handle to an algorithm payload.
Definition: Types.h:208
VPIHarrisCornerDetectorParams::sensitivity
float sensitivity
Specifies sensitivity threshold from the Harris-Stephens equation.
Definition: HarrisCornerDetector.h:91
VPIHarrisCornerDetectorParams::minNMSDistance
float minNMSDistance
Non-maximum suppression radius, set to 0 to disable it.
Definition: HarrisCornerDetector.h:94
VPIHarrisCornerDetectorParams::blockSize
uint32_t blockSize
Block window size used to compute the Harris Corner score.
Definition: HarrisCornerDetector.h:85
VPIHarrisCornerDetectorParams
Structure that defines the parameters for vpiSubmitHarrisCornerDetector.
Definition: HarrisCornerDetector.h:80
VPIArray
struct VPIArrayImpl * VPIArray
A handle to an array.
Definition: Types.h:172
VPIStatus
VPIStatus
Status codes.
Definition: Status.h:81