Collaborate Disseminate
Along with the rise of the modern World Wide Web came the introduction of the JPEG image compression standard in 1992, allowing for high-quality images to be shared without requiring …read more Continue reading Jpegli: Google’s Better JPEG and Possible Death Knell for WebP
We’ve all been victims of bad memes on the Internet, but they’re not all just bad jokes gone wrong. Some are simply bad as a result of being copies-of-copies, as …read more Continue reading Your Text Needs More JPEG
This is the first we’ve heard of Parametric Press — a digital magazine with some deep dives into a variety of subjects (such as particle physics, “big data” and such) …read more Continue reading Parametric Press Unravels The JPEG Format
Working with graphics on microcontrollers has always meant focusing on making the most of limited resources. Particularly in the 8-bit era, all manner of tricks were used to get low-performance chips to achieve feats beyond their lowly station. However, these days, we’re blessed with 32-bit workhorses with clock speeds in …read more
In a world with finite storage and an infinite need for more storage space, data compression becomes a very necessary problem. Several algorithms for data compression may be more familiar – Huffman coding, LZW compression – and some a bit more arcane.
[Labunsky] decided to put to use his knowledge …read more
Attackers are hiding PHP scripts in EXIF headers of JPEG images to hack websites, just by uploading an image. Continue reading Rare Steganography Hack Can Compromise Fully Patched Websites
When it comes to mathematics, the average person can probably get through most of life well enough with just basic algebra. Some simple statistical concepts would be helpful, and a little calculus couldn’t hurt. But that leaves out a lot of interesting mathematical concepts that really do have applications in …read more
Continue reading Interactive Demo Shows the Power of Fourier Transforms
When you think of image processing, you probably don’t think of the Arduino. [Jan Gromes] did, though. Using a camera and an Arduino Mega, [Jan] was able to decode input from an Arduino-connected camera into raw image data. We aren’t sure about [Jan’s] use case, but we can think of lots of reasons you might want to know what is hiding inside a compressed JPEG from the camera.
The Mega is key, because–as you might expect–you need plenty of memory to deal with photos. There is also an SD card for auxiliary storage. The camera code is straightforward and saves …read more
James challenged me to see if it was possible to create a polyglot JavaScript/JPEG. Doing so would allow me to bypass CSP on almost any website that hosts user-uploaded images on the same domain. I gleefully took up the challenge and begun dissecting t… Continue reading Bypassing CSP using polyglot JPEGs
James challenged me to see if it was possible to create a polyglot JavaScript/JPEG. Doing so would allow me to bypass CSP on almost any website that hosts user-uploaded images on the same domain. I gleefully took up the challenge and begun dissecting t… Continue reading Bypassing CSP using polyglot JPEGs
