VPI library : request for new functions

[easybob]

Hello,

i have started to use VPI with Jetson AGX Orin. This library is really cool and performs great.

For information, my work :

Electronically Assisted Astronomy with a Jetson Nano

Hello, i have decided to create this topic to show and explain my project. First, i would like to apologize for my poor English (i am French). So, Electronically Assisted Astronomy (EAA) is quite different from traditional astrophotography. With EAA, camera replace your eye. That is to say you look at the sky with a camera instead of your eye and the purpose is not to make a beautiful picture of the sky (but it could be)but it is to simply observe the deep sky (watching sky on a screen or ev…

I really hope you will add new functions in VPI.

Here are my requests :

Color conversion : add the possibility to debayer bayer image (4 main bayer patterns at least)

Color image channel split and merge like Python cv2.split() and cv2.merge(). For now, VPI channel mixer returns 3 color images (R, G, B). It would be better to get R, G, B mono channels

It would be very useful to get opencv equivalent functions like cv2.subtract, cv2.threshold, cv2.contrastCLAHE, cv2.addWeight and so on for VPI (only mono channel functions).

It would also be really useful to get more statistic functions like percentile for example (always mono channel functions).

I hope VPI will get further versions because it is very very good library.

It would also be really cool if we could get a VPI version for Windows !

Ok to discuss with Nvidia about those demands.

Alain

[easybob]

Is there someone from NVidia here ?

I have a simple problem :

I want to perform gaussian filter on a numpy array monochrome image and get back the result in a numpy array.

Here is my code :

    backend = vpi.Backend.CUDA
    image_vpi = vpi.asimage(image_mono)
    with backend:
        image_vpi = image_vpi.convert(vpi.Format.U8)
    with backend:
        gaussian = image_vpi.gaussian_filter(niveau_blur, 1.7, border=vpi.Border.ZERO)
    PIL_Image = PIL.Image.fromarray(gaussian.cpu())
    image_gaussian_blur_mono = np.array(PIL_Image)

I get this error message :

PIL_Image = PIL.Image.fromarray(gaussian.cpu())
RuntimeError: VPI_ERROR_INTERNAL: Can’t perform shared mapping

I always have this issue, whatever i do (i tried many things.

What is the solution ?

Alain

[easybob]

Well, it seems NVidia does not no the existence of Computer Vision & Image Processing posts !

Still wait for an answer.

Alain

[AastaLLL]

Hi,

Sorry for the late update.

It looks like you already file other two topics for the posts above.

VPI library : request for new functions with AGX Orin

i have started to use VPI with Jetson AGX Orin. This library is really cool and performs great. I really hope you will add new functions in VPI. Here are my requests : Color conversion : add the possibility to debayer bayer image from camera (4 main bayer patterns at least) Color image channel split and merge like Python cv2.split() and cv2.merge(). For now, VPI channel mixer returns 3 color images (R, G, B). It would be better to get R, G, B mono channels (not 3 RGB channels images) It wou…

VPI library with Jetsons?

Hello, i try to use VPI with the Jetson AGX Orin without success. I would like to bring back VPI routine result in a numpy array and things goes wrong. I asked for things here but it seems this topic section is a kind of ghost section : I still don’t understand why VPI has been related to PIL library which is the slowest library we can found for image processing. And no link with numpy ? Can’t understand. Some clear help would be appreciate. Alain

Please let us know if you have further questions.

Thanks.