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by seeingwithsound
Sat May 16, 2015 8:10 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Yes, they look identical from the outside. Question is, do they use the same chip/firmware/driver? @Ares, if you compare the technical specifications listed for the Technaxx TX-25 at http://www.technaxx.de/download/download.php?filename=803.pdf with the data on the eBay pages then you find much mor...
by seeingwithsound
Sat May 16, 2015 2:23 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

2. The glasses cost me >95 Euro. Hi Mike and Pranav, Indeed I too recently paid 98 euros for the Technaxx TX-25 glasses, but today I searched eBay for camera glasses that look visually identical to the Technaxx TX-25 glasses but lower priced, and it looks like the following $60 glasses are a perfec...
by seeingwithsound
Wed May 06, 2015 6:41 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Peter, have you ever run into liability issues with your algorithm? How have you dealt with them? No. I do not provide hardware setups. Thus far blind people or their friends or relatives assemble their own mobile setups based on commercially widely available hardware. It is good that you seek lega...
by seeingwithsound
Tue May 05, 2015 8:24 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

uvcvideo: Found UVC 1.00 device USB PC Camera Amazing, I had searched high and low for UVC-compliant camera glasses, in my case for experimental use with Android devices, and indeed this manufacturer manages to hide its main selling point (UVC compliance) quite well. I just ordered a pair for testi...
by seeingwithsound
Tue May 05, 2015 7:20 am
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Thanks to the prize money I was also able to get some camera glasses that have a working linux webcam driver (Technaxx TX-25, http://www.amazon.co.uk/Technaxx-1080p-Video-Sport-Sunglass/dp/B00KUORH0M ) [...] In case someone finds cheap camera glasses (there are some around for ~$30 from china) that...
by seeingwithsound
Tue May 05, 2015 7:12 am
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

I would appreciate input in this area, especially if people have been testing Ares code with usb cameras. Are you getting the 1/sec performance? can you speed it up to 0.5/sec without bogging the system? Hi mikey11, You can set the sample_freq_Hz to 22050 instead of the default 44100 to gain some s...
by seeingwithsound
Sun Apr 26, 2015 7:49 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Congrats to Ares! I do not have a Raspberry Pi to test with, but have been pleased to observe the perseverance in this challenge over a period of almost 2 years. I also wish to congratulate mikey11 with bringing his initiative to fruition, and of course several others have made valuable contribution...
by seeingwithsound
Thu May 01, 2014 2:37 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Hi Mike, You allocate TEMP_WAV_BUF[] only once, for one soundscape, which is fine. However, it means that you need to recycle its use by resetting its index TEMP_WAV_BUF_IDX every soundscape, setting it back to 0. Currently your TEMP_WAV_BUF_IDX keeps increasing via calls to buf_putc() until it exce...
by seeingwithsound
Mon Aug 05, 2013 7:15 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Hi Mikey11, > the major feature I know I don't know how to do is the foveal transform, but > I saw in openCV there is a polar coordinates function that might achieve this. The vOICe foveal mapping algorithm is not public, and unlike a polar mapping leaves horizontal and vertical straight lines perfe...
by seeingwithsound
Wed Jul 17, 2013 7:43 am
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

> I have not noticed any changes in quality but Dr. Meijer is the best one to comment. In principle the camera resolution setting should increase in tandem with zoom level in order to maintain constant perceptual quality (no blocking artefacts at high zoom levels). This is why you noticed no changes...
by seeingwithsound
Mon Jul 15, 2013 7:56 am
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

> Offloading the image acquisition and processing functions to the GPU will solve that problem to a large degree. Image acquisition, color conversion and scaling is done via OpenCV, so proper use of associated resources is the responsibility of the OpenCV library implementation for RPI. > Another th...
by seeingwithsound
Sat Jul 13, 2013 5:47 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Sure. That shell script refers to a Makefile-syntekdriver that you find in the Internet archive at the URL http://web.archive.org/web/201002171114 ... ntekdriver

Peter


USB Camera Glasses for the Blind
http://www.seeingwithsound.com/camera_glasses.htm
by seeingwithsound
Sat Jul 13, 2013 3:43 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Thanks Pranav, I'll fix the missing include file(s) for Linux once I receive your update. I could only quickly test my code with OpenCV under Windows. Concerning the camera glasses driver issue, I do not know which Syntek drivers other than the Windows STK03N drivers are compatible with the camera g...
by seeingwithsound
Fri Jul 12, 2013 3:48 pm
Forum: Assistive technology and accessibility
Topic: Sight for the Blind for <100$
Replies: 720
Views: 192197

Re: Sight for the Blind for <100$

Hi Mike, There is now a modified version of my hificode.c soundscape generation program that you can use with OpenCV under Windows or Linux for sounding the live camera view: http://www.seeingwithsound.com/hificode_OpenCV.cpp This is quite unpolished code that is not optimized in any way, so it is j...
by seeingwithsound
Sun Aug 28, 2011 7:16 am
Forum: General discussion
Topic: What happen with USB key size(alpha prototype)?
Replies: 23
Views: 4903

Re: What happen with USB key size(alpha prototype)?

<t>I too was very disappointed to see the huge size increase of the alpha boards as compared to the earlier USB stick form factor prototype. Even with a subsequent shrink to credit card size this will largely quench my interest in the Raspberry device, because I had hoped to apply it in self-contain...

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