Embedded Eye

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Ron Patey
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New How To ... Please
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HI: I have ordered 2 Stonymen and am now analyzing what I need to make a 3D pair. I have taken downsampling of some pictures and the full resolution is a must. Below that, there is too much of a jump…Continue

Tags: speed, 3D

Started this discussion. Last reply by Ron Patey Feb 6, 2013.


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Profile Information

Georgetown, Ontario, Canada
About me
Retired: Lots of available time.
What are your interests related to embedded eyes / vision?
Machine Processing
Tell us about your technical background
Electronic Engineer: R&D for 40 years: RF, Displays, Sensors, Security Systems, Radio Remotes for Industry, Learning Software for open pit mine Shovel and BoMines, Multitasking Kernels, Written in C, but Love Assembler...it runs circles around C in small apps.
Building (continuous Process) Robots as hobby.
Just finished array of 9 racoon detectors to protect my lawn, RF linked... then I get out my pellet gun.
Technical interest
optics, image sensor chips, vision hardware, image processing, ground robotics, underwater robotics, sensor networks, art or music, other

HI: Late March and I finally got the 'eyes' and ordered the PCB's. The manufacturer complained about the 6 thou spacing... so delays. BUT: finally built! I have also developed a PC program to test out recognition ideas. It works well enough and I have quickly come to the conclusion that light/dark gradients contain the most information for recognition. I will now do scaling on this to create the scale containing just enough information... the number of pixels to enter into the gradient formula is the key to determining the scale of objects that are noteworthy.

Ron Patey's Blog

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I finally got a good LED strip to place behind the cameras, 300ma at 3.5volts. Makes a lot of difference in the calibration.

I am just playing with simple-solutions to 3D right now. It really is intriguing trying to figure out a non-moving picture way of getting 3D distances. It is really easy with a single item like a pencil on a plain background. But that's cheating. My attempt at subracting the left and right eye, then showing only the pixels with the same +/-3 of 16 brightness…


Posted on May 13, 2013 at 9:38pm — 1 Comment

EYE results, 32 levels reduced to 16 levels for the LCD screen.

SO>>> the LCD screen is 160x128, so some of it is not used. Movie updates are about 8 per second.. only EYE number 1 is shown. The text is my diagnostic readout.

The actual pixels are read using the amplifier on the Stonyman at max gain. The PHI times are 1us high/2.5us low (before A/D). The A/D is 8 bits 450ns at 2volt ref, so 32 to 48 levels can be…


Posted on May 11, 2013 at 3:21pm — 1 Comment

Comment Wall (1 comment)

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