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by njsss
Fri Jun 08, 2018 7:09 pm
Forum: Compute Module
Topic: Cost of design a CM IO board?
Replies: 3
Views: 1050

Cost of design a CM IO board?

Anyone know what's a reasonable range of cost for designing a barebone (csi, 40pin, sd card, power) IO board?
by njsss
Tue May 29, 2018 8:53 pm
Forum: Compute Module
Topic: Can CM3L be used as the same way as original pi?
Replies: 7
Views: 1382

Re: Can CM3L be used as the same way as original pi?

@rzusman do you have a rough number on the estimation?
by njsss
Tue May 29, 2018 4:58 pm
Forum: Camera board
Topic: How to read analog/digital gain in c++?
Replies: 0
Views: 292

How to read analog/digital gain in c++?

I am using RaspiCam c++ api, but unlike the official python one, it does not have functions to retrieve analog/digital gains. So how can I retrieve one?
by njsss
Sat May 26, 2018 6:08 pm
Forum: Compute Module
Topic: Can CM3L be used as the same way as original pi?
Replies: 7
Views: 1382

Re: Can CM3L be used as the same way as original pi?

After a little bit search, it seems that it might be cheaper to customize Pi3 (eliminate ports, reduce size) rather than make a customized CM3 IO board + CM3L. Any thoughts?
by njsss
Fri May 25, 2018 9:21 pm
Forum: Compute Module
Topic: Can CM3L be used as the same way as original pi?
Replies: 7
Views: 1382

Can CM3L be used as the same way as original pi?

Possible to make a customized io board with SD card, wifi and same 40-pin GPIOs, and running stock raspbian?
by njsss
Thu Mar 08, 2018 10:24 pm
Forum: Camera board
Topic: Max pixel value always less than 255
Replies: 6
Views: 1031

Re: Max pixel value always less than 255

well I am using the video port, so I guess that's just it. Thank you all for making it clear.
by njsss
Thu Mar 08, 2018 7:52 pm
Forum: Camera board
Topic: Max pixel value always less than 255
Replies: 6
Views: 1031

Re: Max pixel value always less than 255

ethanol100 wrote:
Thu Mar 08, 2018 7:40 pm
It also depends on the standard used. If you look for example at BT.709 under Digital representation it says white is defined as RGB=(235,235,235) and black as RGB=(16,16,16).
That might be it. The largest pixel value I find is 234. How to change it?
by njsss
Thu Mar 08, 2018 7:20 pm
Forum: Camera board
Topic: Max pixel value always less than 255
Replies: 6
Views: 1031

Max pixel value always less than 255

Is it just me or anyone else have this weird problem that the maximum pixel value of an image taken by pi camera (mine is NoIR v2) is always less than 255, even though the image is clearly saturated?
by njsss
Tue Dec 06, 2016 10:53 pm
Forum: Camera board
Topic: Python or C++ for fast recording?
Replies: 30
Views: 7270

Re: Python or C++ for fast recording?

Hi jamesh, I actually haven't tested either, try to decide which way to go. Just by comparing the documents from python api (picamera) and c++ api (RaspiCam), makes me a little bit confused. What I have is a version 2 NoIR camera, as stated in picamera/hardware part, with a vga resolution (640x480),...
by njsss
Mon Dec 05, 2016 10:25 pm
Forum: Camera board
Topic: Python or C++ for fast recording?
Replies: 30
Views: 7270

Python or C++ for fast recording?

Hello all, I plan to use raspberry pi and the camera module (NoIR v2) to record a short video on-demand, and I want to be able to integrate it to an opencv application. I need highest fps possible, so I was a little confused as how to achieve it. The Picamera (python api v1.12) states the camera can...

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