dynode

"It’s easy to notice a bug when examining the colors for Google (note, this is normal google.com not a doodle). Notice how the three colors are light gray, dark gray, and white – not the typical red, green, blue, yellow color scheme. Why? Well, when the image screenshot is resized to 320 x 240 pixels for processing, the colors are dithered. The number of pixels in the new image that lie between red, green, blue, yellow and white – the dominant background color – is much larger than the number of pixels that are colored. Because of dithering, those between pixels are closer to shades of gray, than colors, and thus the k-means clustering (with EM) finds shades of gray and white to be the “color of Google”. I’m not sure if this is a bug.. what do you think?"

Comment · 10 years ago

Paul, I made something similar - http://bardagjy.com/?p=1639

I had the same problem with Javascript so I used I used Selenium to drive Chrome to take a screencap of the page. Then I used K-Means clustering with EM to convert the pages to their constituent colors.

I scraped 100 and 1000 of the Alexa top 1M. Cool to see another approach, great work!

Comment · 11 years ago

It's not that bad.. typically you use a 32.768kHz ("watch") crystal then divide by 15 to get one second. You can do it with two chips (a bunch of solutions, one is two 7468).

Comment · 11 years ago

Some more info - openocd is a not bad open source JTAG server. <http://openocd.org/>

The TL866 I suggested does support your part.

If you've got the flash in a TSOP - another trick for getting at the flash is to find a FPC cable that has the same pitch as your TSOP and solder it down on the board. FPCs with varying pitches are available at Digikey etc. That way you don't have to remove the flash from the board.

Comment · 11 years ago

First thing to do is have a look at the datasheet <http://www.eonssi.com/upfile/p200892917341.pdf>. I was hoping that it'd be SPI or I2C, but it's a big parallel flash, so reading it is going to take some hardware.

Comes in two packages a TSOP and a BGA. I'm hoping you have the TSOP. If you've got a TSOP, you can get a socket for it / probe it. You can probably also get a socket for the BGA but you might be paying out the nose.

I like the JTAG approach as well. Assuming it's connected to a processor or FPGA that's got boundary scan, even if the rest of the system isn't cooperative you can bitbang the contents of the flash out using the JTAG hardware.

The JTAG silicon - even if it's on the same die as the processor / FPGA is totally separate. It's something like a tiny state machine. Read up on it, really powerful. <https://en.wikipedia.org/wiki/Boundary_scan>

Another option is to transplant the interesting flash from the dead device to an identical working device. Use the working device to read out the contents of the memory. This will require some soldering skills.

Or.. you can pull it off the board, and get a programmer. The industry std is Xeltek but they're $$$$. I've got a TL866, works pretty well. <http://www.eevblog.com/forum/blog/eevblog-411-minipro-tl866-...

Or.. you can read the datasheet and build yourself something with an arduino. You'll run out of pins though, so maybe a pro? or maybe port expanders.

Good luck!

Comment · 11 years ago

Is investing in a company like exxon a good proxy for oil price?

Comment · 11 years ago

I use the multiprocessing module in python all the time for quick parallelism <https://medium.com/@thechriskiehl/parallelism-in-one-line-40... Let's you easily map to multiple cores. I use it a lot for image processing tasks. Quickly crawl through directories to find all the files, then spin up all the cores on my machine to crunch through them. Wish there was an easy way to enlist multiple machines.

Comment · 12 years ago

Do you have any links or sources?

I too remember something like that, but was under the impression that CAs are still ok.

But of course, judging by the massive downvoting you've gotten, I suppose you're incorrect. I wish those downvoters would explain their viewpoint rather than downvoting...

Comment · 12 years ago

Doug (the first author of the linked paper) is at Oculus now..

Comment · 12 years ago

I agree 50/50 split is best, I agree with most of this [1] article (recently posted on HN) about founder equity.

I also agree that choosing non-profit will most likely help our cause, it would take the company in a different direction. This is something we'd prefer to discuss with smarter folks (hence the desire to delay some of these decisions).

[1] <http://www.gravitycomputing.co.nz/joels-totally-fair-method-...

What is a minimum YC application?

3 dynode 12 years ago 3 comments