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<div class="moz-cite-prefix">Like opencv. <a class="moz-txt-link-freetext" href="http://opencv.org/">http://opencv.org/</a><br>
<br>
Open source computer vision <br>
<br>
Edge detection example. <br>
<a class="moz-txt-link-freetext" href="http://docs.opencv.org/doc/tutorials/imgproc/imgtrans/canny_detector/canny_detector.html">http://docs.opencv.org/doc/tutorials/imgproc/imgtrans/canny_detector/canny_detector.html</a><br>
<br>
On 09/04/15 22:34, Richard Jones wrote:<br>
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cite="mid:CAGQt8jyf1ujZFTK1VOfR1w-_-gHnWJqeyNndsvOQ_=CnDVs4-w@mail.gmail.com"
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<div>I once designed a video motion detector using a CA3300
video flash converter to write video into RAM on a character
generator board. I'm sure there is an open source video
program somewhere that would be a good starting point for
doing edge detection and correlation on live video using USB
cameras as input. I think Hanno mentioned it some years back.<br>
<br>
The Home Brew Robotics Club mailing list has covered lots of
computer vision projects over the years. You could try asking
them.<br>
<br>
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Richard<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Apr 9, 2015 at 7:14 PM, Robin
Gilks <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:robin@gilks.org" target="_blank">robin@gilks.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Greetings
all<br>
<br>
We're 100kg into harvesting (and hence washing) walnuts and
the next issue<br>
that needs to be automated is grading. Nuts with dark stains
on the shell<br>
are quite often rotten but in any case they are only
accepted by the<br>
processor as a low grade. Trouble is, a few duff nuts in a
bag of good<br>
ones reduces the grade and hence price of the whole bag.<br>
<br>
Does anyone have experience with the TCS3200 programmable
colour to<br>
frequency converter device? Looks pretty simple to interface
to :)<br>
<br>
I'll be getting a few from here:<br>
<a moz-do-not-send="true"
href="http://www.aliexpress.com/item/Free-Shipping-5-pcs-lot-GY-31TCS230-TCS3200-Module-Color-sensors-Color-Recognition-Module-Color-Sensing/32315491284.html"
target="_blank">http://www.aliexpress.com/item/Free-Shipping-5-pcs-lot-GY-31TCS230-TCS3200-Module-Color-sensors-Color-Recognition-Module-Color-Sensing/32315491284.html</a><br>
but I wonder how much these modules measure the spectrum of
the LEDs<br>
rather than the object illuminated!<br>
<br>
I think the main issues will be mechanical ones - have the
nuts travel<br>
slow enough to measure their colour and for the sorting gate
to operate<br>
but quick enough to be able to process in a reasonable time.<br>
<br>
Avoid nut jams will also be an issue - whenever there is a
hopper of<br>
product it will block the outlet irrespective of the outlet
diameter<br>
(Murphy's 7th law - the other 6 all say the same!).<br>
<br>
Perhaps someone has done this sort of thing in a previous
(or maybe even a<br>
current) life.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Robin Gilks<br>
<br>
<br>
<br>
<br>
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<pre wrap="">_______________________________________________
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