Long time no post! Now that’s out of the way… As ever, I’m always on the search for cheap electronics and this board is nearly mind blowing given both the price and form factor you can get it in. Enter the Gnarly Grey UPDuino v2.0 based on a Lattice iCE40UP5K FPGA featuring: 120Kbits of BRAM […]
A couple of people requested the pinout that I’ve used for my board, I’ve uploaded this below. Cyclone4 FPGA Boardschematic_v200
In my last post, I was talking about image compression methods, mainly DCT transform based along with colour transform based. I’ve now combined these together and have managed to break the 6fps barrier for video over UART! I’ve implemented 2:1:1, 4:1:1 and 8:1:1 subsampling (I think I can call it that?) with reasonable performance! The […]
Image compression is a massive topic and to be honest, a bit of a buzzword title. Images can be compressed in multiple ways. One of the simplest being reducing the bit depth of the image. Reducing the bit depth is a pretty poor method of compression though and generally produces weird banding results as could […]
As of yesterday, I’ve got a new laptop (woop woop I7-7700HQ)! Obviously that meant transferring data over though a bit of WiFi and an overnight transfer deemed me ready to rock this morning. I do however have an exam in a week which I should probably start revising for so this will be my last […]
As I mentioned in my last post, I wanted to try some image segmentation! I had a quick go at histogram based segmentation where the largest peak of the histogram was used to find the most occuring pixel (after the colour range was bit crushed) but this didn’t have particularly useful results. This could be […]
One of the staples of image processing is edge detection. Edge detection is generally one of the primary steps for further image processing methods including feature detection. Conceptually, edge detection is relatively simply. Look at the image and compare areas of low intensity to areas of high intensity, simple right? Actually yeh, it is that […]
