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RDX705

Added missing file

Also, I tried using pipe for communication between raspiraw and my algorithm and it turned out to be extremely effective, both fast, reliable and simple to implement.

RDX705

That's interesting. *q++ = (k>255 ? 255 : k) makes bright areas in image even brighter. If lighting is moderate, its fine (image 1-1.pgm), if its too light, big parts of image become completely white (1-2.pgm). *q++ = (k >> 2) makes image darker (2.pgm) if lighting is moderate or normal if lighting ...

RDX705

Sure, here's the .pgm picture. Smartphone picture is on imgur, as its "too large" for attachment: https://imgur.com/a/ArVKsi7
The white flagpole is glitched.

RDX705

Yes, i did it like this: static void callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer) { static int count = 0; vcos_log_error("Buffer %p returned, filled %d, timestamp %llu, flags %04X", buffer, buffer->length, buffer->pts, buffer->flags); if (running) { RASPIRAW_PARAMS_T *cfg = (R...

RDX705

Hello again. After testing the system with 320x200 .pgm output I got two more questions: 1) The camera works well with moderate lighting, but some bright objects (for example, sunlit white paper box) appear as a mess of black and white zones, making feature extraction impossible. Is it possible to f...

RDX705

Great, thank you, it outputs greyscale now. It works fine on less than 200 fps, then images begin to appear "torn apart" at lower section, with higher FPS "tear" goes higher as well, with part of next image visible below. Is it possible to fix this or its caused by camera's senso...

RDX705

I did everything like this: static void callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer) { static int count = 0; vcos_log_error("Buffer %p returned, filled %d, timestamp %llu, flags %04X", buffer, buffer->length, buffer->pts, buffer->flags); if (running) { RASPIRAW_PARAMS_T *cfg =...

RDX705

I want to use raspiraw output for feature extraction. Currently extraction algorithm uses dcraw to convert raw frame to ppm, which is then processed by opencv, but dcraw is a bit slow, especially with higher resolutions, so I wondered if its possible to use raw directly. Tried to create Mat with dat...

RDX705

Thanks. Is there any way to use .raw data in openCV?

RDX705

I probably phrased question the wrong way. I meant if it is possible to obtain .raw image that can be immediately converted by dcraw without the need of "cat hd0.32k"?

RDX705

Is it possible to output files without .32k header?

RDX705

I tried adding b/w conversion to the callback method, but I still get coloured images. What could be the reason for this? static void callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer) { static int count = 0; vcos_log_error("Buffer %p returned, filled %d, timestamp %llu, flags %04X"...

RDX705

Thanks. Where should I put the code to output black and white frames? In callback() method?

RDX705

I have seen your post regarding usage of raspiraw for robot guidance and decided to build a turret robot using Lego NXT motors and RPI, that will just spin in one place and "scan" surroundings with camera. I made an algorithm using findContours from OpenCV (it seems to be much faster than ...

RDX705

Hello again. I have some questions on Raspiraw. 1) Is it possible to capture greyscale/binary images with Raspiraw? 2) Is it possible to output ppm/png files? P.S. I tested it outside during bright sunny day in 640x240, and resulting frames are of quite high quality. This may be because NoIR doesn't...

RDX705

OK, thanks.

By the way, what does "unexpected and of file" mean in raw2ogg2anim? When I get this warning, half of the screen in .ogg video becomes kind of underprocessed.

RDX705

Is it possible to record at 250-350 fps without bright light? I wanted to film birds outside with hi-speed camera, will natural lightning suffice?

RDX705

Captured frames are extremely bright now - is it because of incorrect exposure time?

RDX705

Tried v2 tools, same problem as before - cut:tstamps.csv: no such file or directory, ls: cannot access '/dev/shm/out.'.raw": no such file or directory. It also has some kind of syntax error on line 14 - operand expected after error token. However, raspiraw is working fine now, getting correct a...

RDX705

Thanks. Will try to use V2 tools and see if it works.

P.S. Mouse trap looks amazing! What else did you record with hi-speed camera?

RDX705

https://github.com/6by9/raspiraw

RDX705

I installed Raspiraw on my RPI 3B+ and experienced some problems with high-speed video capture: 1. No matter what resolution and FPS I set in ./raspiraw command, FPS never exceeds 243 (randomly fluctuates between 235-242), with values lower than 243 setting is fine. Note: I check for fps both via fr...

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