nadl | small framework that can perform automatic differentiation | Machine Learning library
kandi X-RAY | nadl Summary
kandi X-RAY | nadl Summary
A little Automatic Differentiation library that I wrote in Python using only numpy that can calculate first order gradients using AD. This framework is very simple implementation of how other big framworks do gradient calculation using Numerical Automatic Differentiation.
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Top functions reviewed by kandi - BETA
- Power of a tensor
- Return a numpy array
- Backward algorithm
- Adds two tensors together
- Return the sum op
- Sum the tensor
- Matrix multiplication
nadl Key Features
nadl Examples and Code Snippets
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QUESTION
my problem is when i set the resolution higher than 640x480, the output colors are only in the bottom part right. The rest of the output has a blueish color.
I have a RaspyberryPi4 with 4GB ram and a PiCamera V2. The CPU usage is not more than ~65% with the highest resolution. The same error appears also on another rapberrypi and its picamera (V2 NOIR).
Here are the Images (dont care about the white bars in the corner: they came from bad screenshooting)
Here Is my python script:
...ANSWER
Answered 2020-May-20 at 05:15I will answer the question myself: The main problem is the picamera hardware and how the Raspberry is reading it through the Gpu.
The quick solution was to change the resolution to multiples of 32. For the FullHd case it need to be 1920*1088 instead of 1920*1080. Then the colors are normal again.
I also find out the highest resolution before the fps drop drown:
horizontal 1280*704
vertical 640*672
Every higher resolultion will drop the fps from 30+ to ~6-8.
Which part of the camera sensor is detecting/used also depends on the resolution. For more detail read the documentation carefully ;-)
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install nadl
The quickest way to start using nadl:.
Download this repository (or use Github codespaces, your wish) and open it in a terminal/file manager.
Make a python file and import the tensor.py file.
Write your code!
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