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Video flip #10

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Video flip #10

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eac5800
adds ability to flip images from camera
gulliveruk Aug 18, 2019
6c206a1
Update README.md
gulliverhan Aug 18, 2019
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16 changes: 14 additions & 2 deletions README.md
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Expand Up @@ -27,12 +27,24 @@ Below we show some usage examples. You can find more in the [notebooks](noteboo

### Create CSI camera

Call ``CSICamera`` to use a compatible CSI camera. ``capture_width``, ``capture_height``, and ``capture_fps`` will control the capture shape and rate that images are aquired. ``width`` and ``height`` control the final output shape of the image as returned by the ``read`` function.
Call ``CSICamera`` to use a compatible CSI camera. ``capture_width``, ``capture_height``, and ``capture_fps`` will control the capture shape and rate that images are aquired. ``width`` and ``height`` control the final output shape of the image as returned by the ``read`` function.
``capture_flip`` allows the image to be flipped or rotated using the following codes.

| Type | Specific | Code |
|:-------|:-----:|:---:|
| Identity | no rotation (default)| 0|
| Rotate | Counterclockwise 90 degrees| 1|
|Rotate | 180 degrees| 2|
|Rotate| Clockwise 90 degrees| 3|
|Flip| Horizontal flip| 4|
|Flip| Upper right diagonal flip| 5|
|Flip|Vertical flip| 6|
|Flip|Upper-left diagonal| 7|

```python
from jetcam.csi_camera import CSICamera

camera = CSICamera(width=224, height=224, capture_width=1080, capture_height=720, capture_fps=30)
camera = CSICamera(width=224, height=224, capture_width=1080, capture_height=720, capture_fps=30, capture_flip=6)
```

### Create USB camera
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6 changes: 4 additions & 2 deletions jetcam/csi_camera.py
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Expand Up @@ -12,6 +12,8 @@ class CSICamera(Camera):
capture_fps = traitlets.Integer(default_value=30)
capture_width = traitlets.Integer(default_value=640)
capture_height = traitlets.Integer(default_value=480)
capture_flip = traitlets.Integer(default_value=0)


def __init__(self, *args, **kwargs):
super(CSICamera, self).__init__(*args, **kwargs)
Expand All @@ -29,8 +31,8 @@ def __init__(self, *args, **kwargs):
atexit.register(self.cap.release)

def _gst_str(self):
return 'nvarguscamerasrc sensor-id=%d ! video/x-raw(memory:NVMM), width=%d, height=%d, format=(string)NV12, framerate=(fraction)%d/1 ! nvvidconv ! video/x-raw, width=(int)%d, height=(int)%d, format=(string)BGRx ! videoconvert ! appsink' % (
self.capture_device, self.capture_width, self.capture_height, self.capture_fps, self.width, self.height)
return 'nvarguscamerasrc sensor-id=%d ! video/x-raw(memory:NVMM), width=%d, height=%d, format=(string)NV12, framerate=(fraction)%d/1 ! nvvidconv flip-method=%d ! video/x-raw, width=(int)%d, height=(int)%d, format=(string)BGRx ! videoconvert ! appsink' % (
self.capture_device, self.capture_width, self.capture_height, self.capture_fps, self.capture_flip, self.width, self.height)

def _read(self):
re, image = self.cap.read()
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2 changes: 1 addition & 1 deletion setup.py
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Expand Up @@ -2,7 +2,7 @@

setup(
name='jetcam',
version='0.0.0',
version='0.0.1',
description='An easy to use camera interface for NVIDIA Jetson',
packages=find_packages(),
install_requires=[
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