Hello,
I have created this topic to explain my project EVA (Electronic Visual Assistant) for Jetson Nano.
EVA is a real-time system that mitigates atmospheric turbulence.
EVA provides real-time videos of Moon and planets :
EVA provides HR images of Moon (pano) and planets :
Some views of the embedded system (8 hours of autonomy, touch screen, Jetson Nano 4GB ) :
Have a nice day !
Michel
Hello everybody,
The turbulence can be weak, normal or strong.
EVA (Electronic Visual Assistant) analyses in real time a sequence of continuous raw images to define, depending on the turbulence, a degradation model applicable to these raw images.
The nature of the turbulence may change from sequence to sequence.
The model which will be implemented in 2022, will be tested on the Moon, Mars, Jupiter and Saturn.
The first tests show that this method makes it possible to recover images even in very degraded conditions which is not the case, among amateurs, with current approaches.
On the other hand, the method also works for long distance turbulence and underwater turbulence.
When this method will be fully tested, at the end of 2022, an Linux on-board version will be offered to all those who experience the inconvenience of atmospheric and underwater turbulence: amateur astronomers, long-distance surveillance, wildlife photographers, underwater photographers, etc.
A website dedicated to GPU vision will be open in 2022 so that everyone can follow the operations in progress.
What will the fp16 computing power of Jetson GPUs be in 2023?
Michel
Stacking of lunar and planetary images in real time is possible thanks to the calculation by GPU (graphics processor) carried out by the turbu software to which this site is dedicated.
turbu software is available under LinuxMint, it requires the installation of the CUDA Toolkit, ArrayFire, Guake and ZWO ASI SDK modules to run.
Visitor curious to test this new practice of astronomy (assisted visual) can download turbu software after having installed the necessary modules.
Hello,
This version under Linux Mint 20.3 (Ubuntu 20.04) is made for a laptop with a graphics card at least equal to GTX 1050 Ti.
The version for Jetson will be released with JetPack 5.0 on Ubuntu 20.04.
Michel
No it’s a linux C/C++ executable, there is no extension.
You unzip it and run it from the command line in a terminal:
$ turbu
usage : turbu expo(ms) gain WB_R WB_B band_width high_speed k_quality
example: turbu 3 300 70 70 100 0 0.7
C/C++ code is optimized for Linux Mint 20.3 (Ubuntu 20.04) environment.
Electronic Visual Assistant and deep sky :
A degradation model is applied to left image. No dark and no flat but a mixture of synthetic noises to model the real noise.
turbu software automatically selects the best number of frames depending on the turbulence :
Yes, I use wavelets filtering, patch denoising and precise optical flow.
Latest version of turbu works at 180 fps (5400 raw frames stacked in 30 seconds).
Comparison with the image of an amateur astronomer :
The difference is that the image on the left (15-minute derotation) is obtained automatically and that the images of the assisted video used for the derotation are obtained live.
A single end-to-end processing software: turbu.
For the left image, telescope used is a C11 @ f/20 on EQ6-R Pro.
The images (800x600) on the left are obtained live every 30 seconds (visual assisted) while the images on the right are obtained every 3.5 minutes (derotation of 7 images).
The visual aspect is practically identical.
Another treatment of the video from August 11, 2021 with a more faithful rendering of details and colors.
With some nice details :
First Saturn of the year. The planet is still low in Alsace but between two cloudy periods, it is already possible to image.
A small image of Jupiter from August 4, 2022 at 2:06 UT.
The assisted video includes 432 images of this quality taken between 0:09 UT and 3:30 UT.
Use blur diffusion to improve the quality of images degraded by atmospheric turbulence :
This technique will soon make it possible to considerably improve the quality of the images obtained (faces, planets, animals, landscapes, etc.) when turbulence conditions are severe.
A mockup will be made when the Jetson Orin Nano 8GB card becomes available.
For those who want to put one foot and even both in these new technologies :
