color sorting system

xyz_1966 over 9 years ago

Dear Friends ,

i think my bellow post is not clear for you all sorry

in short i need to detect the color of a small object ( approximately 2mm x 5mm) moving very fast front of a camera, something similar to bellow photo

I need to start a project on high speed color sorting system for grains , looking at the information in the web the most suitable combination is to have a ccd interfaced to a fpga. I am good in microcontroller , C++ but not in fpga. Image processing in fpga is new to me. Recommendation on good book or any generic fpga code will be very helpful to me.

Regards

D_Hersey over 9 years ago

At how many points do you need to measure color? You may be able to get by with something simpler than a camera.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
xyz_1966 over 9 years ago in reply to D_Hersey

At least 8 points ,
commercials unit are having 200 points per line
There are conventional system using photo diodes but calibration and adjustment very difficult .
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
D_Hersey over 9 years ago

cto:

https://www.digilentinc.com/Products/Detail.cfm?NavPath=2,648,931&Prod=VMOD-CAM
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
clem57 over 9 years ago

Why FPGA when the Raspberry Pi can do the job with GPU and OpenCV
C
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
xyz_1966 over 9 years ago in reply to clem57

Martin, FPGA considered because , color recognition should be very fast
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
michaelkellett over 9 years ago in reply to xyz_1966

I'm not sure that you are quite ready to jump to an FPGA - this is quite an ambitious project - if you have no FPGA experience you'll need to think in terms of at least 3 months investment of time to get up to speed (and in the UK at least a £5000 budget for courses !

But before you go that route:

How many of these will you make ?
How fast must it operate ?
How much can each system cost (assuming there will be more than one of them made) ?
How much time and money can you put into development. ?

If you are already proficient in C coding then at least consider using a DSP (check out TI and Anlaog Devices) or GPU based approach (check out NVDIA and AMD).

MK
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
xyz_1966 over 9 years ago in reply to michaelkellett

There is a good market for this type of machines. A chines machine would cost around 40k to 60 k USD. fitted with 4 to 6 cameras

Currently I am working full time for a company in automation field, I hope I can spare some time to develop this.
The product passes front of the camera in less than 1/10 of a second once detected we need to use an ultra-fast pneumatic ejector – so more you save on detection more time we have for the ejection system .
I am good in c I must explore DSP chips option and GPU as well
Thank you for the comments
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel
sms over 7 years ago in reply to xyz_1966

So good, There is a good market in India also, when start the project,
I am also working in color sorter field past 10 years , if possible i also join with u.
if u working DSP chip option is right choice, most of china machine in DSP only,
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel