Search found 7 matches

by mkwoll
Sun Sep 03, 2017 8:08 pm
Forum: Technical Discussion
Topic: Exposure and gain settings on M7 camera
Replies: 1
Views: 1395

Exposure and gain settings on M7 camera

Hi guys - Have been making great progress on my project and the OpenMV camera and IDE have helped a lot. Thanks! I am using manual gain and exposure settings on the M7 camera. The docs say "see the camera datasheet" but frankly can't make much sense of it. So can you please tell me: 1) What is the r...
by mkwoll
Tue Jul 25, 2017 9:26 pm
Forum: General Topics
Topic: problem saving video to SD
Replies: 10
Views: 4923

Re: problem saving video to SD

Again - thanks for the really quick support. Things are working much better with the new IDE. I tried a modified version of the code you posted in you last message. One problem with that code is that it will always run a little slower than the programmed delay because they call to pyb.delay() comes ...
by mkwoll
Sun Jul 23, 2017 8:40 pm
Forum: General Topics
Topic: problem saving video to SD
Replies: 10
Views: 4923

Re: problem saving video to SD

Thanks for quick reply! I don't understand your code sample. Where is the delay in the loop? And shouldn't the print(clock.fps()) be after the loop rather that inside it? I just downloaded the new IDE and will give it a try. Here is what I was thinking as a way to get a precise fps rate using a call...
by mkwoll
Sun Jul 23, 2017 3:50 pm
Forum: General Topics
Topic: problem saving video to SD
Replies: 10
Views: 4923

Re: problem saving video to SD

Just did a little more testing. Now I am seeing the program hanging after printing either a '1' or a '0'. So maybe is another problem entirely? Also, I tried some of the other small formats: QQCIF, QQSIF, etc. They all show several rows of random pixels at the bottom of the frame, but only about hal...
by mkwoll
Sun Jul 23, 2017 2:45 pm
Forum: General Topics
Topic: problem saving video to SD
Replies: 10
Views: 4923

problem saving video to SD

I had asked earlier about sending video frames from the MV7 to a PC. Decided it would be simpler for now to save video to the SD card and then copy to the PC. But I have had very erratic results, both with GIF and MPEG. I copied some code from you site and modified it a bit doe debugging: import sen...
by mkwoll
Wed Jul 12, 2017 8:59 pm
Forum: General Topics
Topic: send frames to PC
Replies: 17
Views: 9342

Re: send frames to PC

Thanks for the very fast reply! I looked at the openmv.py code. Not sure I understand it all but will give it a try. It looks like the code converts monochrome images (HxW) in the frame buffer to RGB format (HxWx3). I suppose that could be simplified if all I need is an array of monochrome values. A...
by mkwoll
Wed Jul 12, 2017 1:06 pm
Forum: General Topics
Topic: send frames to PC
Replies: 17
Views: 9342

send frames to PC

Hi - very impressed with the camera and software. Hope this is a simple question: I have been doing some image processing using openCV. I bought an M7 camera because I need IR sensitivity, adjustable frame rate and frame size, synchronization with a blinking LED illuminator,etc. But for now I would ...

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