| Name | camlab JSON |
| Version |
0.1.6.0
JSON |
| download |
| home_page | None |
| Summary | A Python library for camera-related utilities and lab tools. |
| upload_time | 2025-10-22 08:23:12 |
| maintainer | None |
| docs_url | None |
| author | None |
| requires_python | >=3.8 |
| license | Copyright (c) 2018 The Python Packaging Authority
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
|
| keywords |
camera
computer-vision
lab
toolkit
|
| VCS |
 |
| bugtrack_url |
|
| requirements |
No requirements were recorded.
|
| Travis-CI |
No Travis.
|
| coveralls test coverage |
No coveralls.
|
# CamLab
## play with camera pose
```sh
pip install camlab
```
<p float="center">
<img src="assets/camera_system_calibration.gif" width="78%" />
</p>
project a world-coordinate point to screen coordniate:
```python
import numpy as np
from camlab import CameraObj
cam = CameraObj()
# init intrinsics
focal = 1111.1
w = 800
h = 800
cam.manual_init(focal, w, h)
# init extrinsics
extri = np.array(
[[-9.9990e-01, 4.1922e-03, -1.3346e-02, -5.3798e-02],
[-1.3989e-02, -2.9966e-01, 9.5394e-01, 3.8455e+00],
[-4.6566e-10, 9.5404e-01, 2.9969e-01, 1.2081e+00],
[0.0, 0.0, 0.0, 1.0]])
cam.load_extrinsic(extri)
# coordinates transformation
p_in_world = [0, 0, 0]
p_in_screen = cam.world2screen(p_in_world, to_int=True)
print(p_in_screen)
# [400, 400]
```
make a ray from a screen point:
```python
import numpy as np
from camlab import CameraObj
intri = [[1111.0, 0.0, 400.0],
[0.0, 1111.0, 400.0],
[0.0, 0.0, 1.0]]
extri = np.array(
[[-9.9990e-01, 4.1922e-03, -1.3346e-02, -5.3798e-02],
[-1.3989e-02, -2.9966e-01, 9.5394e-01, 3.8455e+00],
[-4.6566e-10, 9.5404e-01, 2.9969e-01, 1.2081e+00],
[0.0, 0.0, 0.0, 1.0]])
cam_obj = CameraObj(intri)
cam_obj.load_extrinsic(extri)
p = (400, 400) # screen point
rayo, rayd = cam_obj.make_ray(p)
print(rayo, rayd)
# ray origin and ray direction
# (rayd - rayo) represents a point at the ray.
p_ = cam_obj.world2screen(rayd - rayo, to_int=True)
# reproject the ray point to screen
print(p_)
# (400, 400)
```
Raw data
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"description": "# CamLab\n## play with camera pose\n\n```sh\npip install camlab\n```\n\n<p float=\"center\">\n <img src=\"assets/camera_system_calibration.gif\" width=\"78%\" />\n</p>\n\nproject a world-coordinate point to screen coordniate:\n\n```python\nimport numpy as np\nfrom camlab import CameraObj\n\n\ncam = CameraObj()\n\n# init intrinsics\nfocal = 1111.1\nw = 800\nh = 800\ncam.manual_init(focal, w, h)\n\n# init extrinsics\nextri = np.array(\n [[-9.9990e-01, 4.1922e-03, -1.3346e-02, -5.3798e-02],\n [-1.3989e-02, -2.9966e-01, 9.5394e-01, 3.8455e+00],\n [-4.6566e-10, 9.5404e-01, 2.9969e-01, 1.2081e+00],\n [0.0, 0.0, 0.0, 1.0]])\ncam.load_extrinsic(extri)\n\n# coordinates transformation\np_in_world = [0, 0, 0]\np_in_screen = cam.world2screen(p_in_world, to_int=True)\nprint(p_in_screen)\n# [400, 400]\n\n```\n\nmake a ray from a screen point:\n\n```python\nimport numpy as np\nfrom camlab import CameraObj\n\nintri = [[1111.0, 0.0, 400.0],\n [0.0, 1111.0, 400.0],\n [0.0, 0.0, 1.0]]\nextri = np.array(\n [[-9.9990e-01, 4.1922e-03, -1.3346e-02, -5.3798e-02],\n [-1.3989e-02, -2.9966e-01, 9.5394e-01, 3.8455e+00],\n [-4.6566e-10, 9.5404e-01, 2.9969e-01, 1.2081e+00],\n [0.0, 0.0, 0.0, 1.0]])\n\ncam_obj = CameraObj(intri)\ncam_obj.load_extrinsic(extri)\n\np = (400, 400) # screen point\nrayo, rayd = cam_obj.make_ray(p)\nprint(rayo, rayd)\n# ray origin and ray direction\n# (rayd - rayo) represents a point at the ray.\np_ = cam_obj.world2screen(rayd - rayo, to_int=True)\n# reproject the ray point to screen\nprint(p_)\n# (400, 400)\n\n``` \n\n",
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