- published: 24 Jan 2015
- views: 19374
JPEG (/ˈdʒeɪpɛɡ/ JAY-peg) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality.
JPEG compression is used in a number of image file formats. JPEG/Exif is the most common image format used by digital cameras and other photographic image capture devices; along with JPEG/JFIF, it is the most common format for storing and transmitting photographic images on the World Wide Web. These format variations are often not distinguished, and are simply called JPEG.
The term "JPEG" is an abbreviation for the Joint Photographic Experts Group, which created the standard. The MIME media type for JPEG is image/jpeg, except in older Internet Explorer versions, which provides a MIME type of image/pjpeg when uploading JPEG images. JPEG files usually have a filename extension of .jpg or .jpeg.
Briefly explains how lossy compression works.
JPEG Isn't a file format. Image Analyst Mike Pound explains why not in our first in a series about how JPEG works. Colourspaces: https://youtu.be/LFXN9PiOGtY Elegant Compression (The LZ Method): https://youtu.be/goOa3DGezUA Capturing Digital Images (The Bayer Filter): https://youtu.be/LWxu4rkZBLw Discrete Cosine Transform: https://youtu.be/Q2aEzeMDHMA http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
DCT is the secret to JPEG's compression. Image Analyst Mike Pound explains how the compression works. Colourspaces: https://youtu.be/LFXN9PiOGtY JPEG 'files' & Colour: https://youtu.be/n_uNPbdenRs Computer That Changed Everything (Altair 8800): https://youtu.be/6LYRgrqJgDc Problems with JPEG: COMING SOON Upside Down Trees (Huffman Encoding): https://youtu.be/umTbivyJoiI Colourspaces: https://youtu.be/LFXN9PiOGtY JPEG isn't a file format - JPEG pt1: https://youtu.be/n_uNPbdenRs Upside Down Trees (Huffman Encoding): https://youtu.be/umTbivyJoiI Problems with JPEG: COMING SOON! Computer That Changed Everything (Altair 8800): https://youtu.be/6LYRgrqJgDc http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Comput...
Hello! If you are reading this, you have probably committed an atrocity! Assuming that you are using Windows XP, it is a (mostly) stable operating system that is still used past its "expiration date." However, like many of the other stock programs that Microsoft ships with their OS, Windows Paint is not always the best choice when editing images to be posted on the internet. Much of the original quality of images can be lost when exporting directly from Windows Paint. It can still be avoided, however, by exporting/saving your image as a .PNG, and NOT a JPEG. This rule may not apply to Windows Vista or 7 as far as I know. Also not sure about Macs or Unix OSes.
Never use JPEG with text. But why? Image Analyst Mike Pound explains what goes wrong when JPEG tries to compress text. Holy Grail of AI: https://youtu.be/tlS5Y2vm02c Computer That Changed Everything: https://youtu.be/6LYRgrqJgDc Arduino Hardware: https://youtu.be/b4z1zkmo1BE How JPEG Works: https://www.youtube.com/playlist?list=PLzH6n4zXuckoAod3z31QEST1ZaizBuNHh http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Hey guys.. this is my assignment video.. it is about jpeg image compression.. hope it helps you out in understanding jpeg :) Add comments if you like it and subscribe for further explanatory videos.-- Created using PowToon -- Free sign up at http://www.powtoon.com/ . Make your own animated videos and animated presentations for free. PowToon is a free tool that allows you to develop cool animated clips and animated presentations for your website, office meeting, sales pitch, nonprofit fundraiser, product launch, video resume, or anything else you could use an animated explainer video. PowToon's animation templates help you create animated presentations and animated explainer videos from scratch. Anyone can produce awesome animations quickly with PowToon, without the cost or hassle other ...
PetaPixel posted an article that stated "8 Reasons Why You Should Shoot In Jpeg" and I felt I needed to chime in with a response. We all know that I am the "I SHOOT RAW" guy and have been shooting RAW since day one. http://froknowsphoto.com/8-reasons-to-shoot-jpeg/ The first thing I do when I get a new camera is turn it to RAW. I do this with my Nikon, Canon, Sony and any other DSLR or Mirrorless Camera I may be using. I don't care what digital camera you use I highly suggest you shoot RAW. The 8 Reasons listed in the article are all pretty weak to be honest and I felt I needed to have my say and rebut the article. We don't simply shoot RAW for today we shoot RAW for tomorrow. I am able to edit RAW files from a decade ago in Adobe Lightroom and make them look better than I ever co...
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Silver cans and bronze coloured dirt
Silver cans and bronze coloured dirt
Things ain't so soon near the parking lot moon
Silver cans and bronze coloured dirt
She said let's call it quit
Let's not call it the end of the world
Call it what you will, I'm heartbroken still
Words are just words
Road salt on I 95
Road salt on I 95
Forget what your told, it's bound to get cold
Road salt on I 95
I call today a disaster
She calls it December the 3rd
Call it what you will, I'm heartbroken still
Words are just words
On a brief and star stricken night
On a brief and star stricken night
I called her name on the road from Spokane
On a brief and star stricken night
I hear a blue heaven crying
Some folks just call it a bird
Call it what you will, I'm heartbroken still
Words are just words
Some call an end a beginning
For right now, they'll go unheard
Call it what you will, I'm heartbroken still