|
|
Backing Up Your Stuff Part 2: A Solution
So what do you do when you have so much stuff on your computer that it becomes difficult, if not impossible, to back up the whole thing on a regular basis? You know that you must perform backups (the world is full of dangers to your computer and...
Dedicated Web Hosting : The Executive Summary
What is Dedicated Web Hosting? Dedicated web hosting can alleviate the need to share hardware or software with any other sites or web pages. Webmasters are given the autonomy to decide on applications that are installed on the server to create...
Linux Web Hosting
What Is Linux :-
Linux is an operating system that was initially created as a hobby by a young student, Linus Torvalds, at the University of Helsinki in Finland. Linus had an interest in Minix, a small UNIX system, and decided to develop a system...
The Pros & Cons Of Hosting The Site Yourself
DO-IT-YOURSELF You host the Web site yourself, relying purely on in-house resources except for the external connectivity. PROS: * No service costs to pay * You have total control over the application CONS: * Can be difficult and expensive to...
What is Data Recovery? - A brief Introduction
What is Data Recovery? Data Recovery is the process of retrieval of inaccessible or corrupt data from digital media that has become damaged in some way. Data Recovery can be used to recover data from devices as varied as Hard Disk Drives, Memory...
|
|
|
|
|
|
|
|
Image conversion In Computers
Image Conversion In Computers
JPEG, GIFF/JIFF, BMP, and TIFF are the most commonly used formats for storing still image files such as photographs, graphics, and drawings. JPEG stands for Joint Photographic Experts Group and is a standard for image compression. However, some amount of data/detail is lost in the process. JPEG therefore is characterized by a glossy compression technique for still color images, just as MPEG is used for compressing motion picture files. GIFF/JIFF stands for Graphics Interchange format, which is a bit-mapped graphics file format. Its storage is limited to about 256 colors as against 16 million colors in JPEG. GIFF therefore is more suitable to store illustrations rather than color photos. Other popular formats for storing bit-mapped images are TIFF (Tagged image file format), BMP,and PCX. You'll also see GIF and JPG. You may be wondering what a bit-map is? A bit-map graphic is composed of a pattern of dots (each dot containing bits of data). Vector graphics, on the other hand, use geometrical formulas to represent images. The latter can be scaled i.e. the object size can be changed while maintaining its shape. Vector images are thus more flexible than bit-maps. Also vector imageslook better on higher resolution and require less memory. This brings us to the difference between Paint programs and Draw programs. In Paint program the drawings are represented as bit-maps. Draw programs, on the other hand, represent images as vector graphics.
Why we need to convert images from one format to another?
• Converting GIFF files to JPEG can compress the files to a considerable extent. The uncompressed data is normally 24 bits/pixel for full-color images. JPEG can achieve 10:1 to 20:1 compression without apparent loss, 30:1 to 50:1 compression with small to moderate defects, and 100:1 for very low quality purposes like archiving. These smaller size files increase storage capacity and take lesser transmission time across networks. • JPEG files are extremely useful for image
archiving purposes. JPEG files store a full color range (24 bits/pixel as against 8 bits/pixels in GIFF).The display of images is particularly good on full-color hardware that is becoming common now.
Conversion rules:
• Large, high-quality, real-world scanned photos are the best material for conversion to JPEG format. • Do not convert black and white images to JPEG that works best with smooth and subtle color palette. B&W images are best on GIF. • Even on colored images make sure to smoothen out the sharp edges before carrying out the conversion. A gray-scale image is much easier for a JPEG format. • Avoid converting images that have already been converted before. Re-conversion spoils the quality of images. It’s best to work with original scanned images here.
To explain how format conversion is carried out here’s an example:
1. In a Windows operating system go to Start menu – Accessories – Paint 2. Create an image with the program and save it in BMP format. Now Close the file 3. To convert it into say JPEG, re-open the file 4. Go to File menu and click Save As 5. Rename the file in File name box and in Save as Type drop down box click on the format you want it to be converted to. In this case “JPEG File Interchange Format (*.jpg, *. jpeg,)” 6. Click on the Save button. Your file is now converted from BMP to JPEG.
If you want to change BMP to GIF, follow the same procedure except that in Save as Type box click on “Graphics Interchange Format (.gif)” Once an image has been converted from one format to another, say GIF to JPEG, some of the information is lost. You can’t go back to the original file. Therefore it is always advisable that you make a copy of the original file before converting it.
About the Author
KRISH is a writer and seller of high quality eBooks covering various topics. He gives 90 days money back guarentee for all his eBooks, because he is so confident that his eBooks are of very high quality and nobody will be unhappy about his ebooks and ask for money back.
|
|
|
|
|
Tom's Hardware |
: Tom's Hardware Guide is the Internet's premiere resource for hardware news and reviews. |
www.tomshardware.com |
  |
HardwareCentral - Your source for in-depth computer hardware info. |
HardwareCentral is the #1 Hardware Information Resource on the 'Net. Featuring over 600 pages of Hardware information, including advice on System ... |
www.hardwarecentral.com |
  |
Apple - Hardware |
Find your favorite Mac, iPod and other Apple accessories. |
www.apple.com |
  |
Ace Hardware |
Nationwide (United States) hardware and home improvement retailer. Includes products, dealer locator and corporate information. |
www.acehardware.com |
  |
Computer hardware - Wikipedia, the free encyclopedia |
The hardware of a computer is infrequently changed, in comparison with software and ... Personal computers, the computer hardware familiar to most people, ... |
en.wikipedia.org |
  |
Hardware - Wikipedia, the free encyclopedia |
Hardware is the general term that is used to describe physical artifacts of a technology. ... In a looser sense, hardware can be major military equipment, ... |
en.wikipedia.org |
  |
Open Directory - Computers: Hardware |
Hardware Central - Computing-centric community providing vital information, support, tools and interaction facilities for power computer users and ... |
dmoz.org |
  |
Microsoft Hardware – Home Page |
Learn about Microsoft mice, keyboards, desktop sets, webcams, media center peripherals, gaming products, fingerprint readers and presentation tools. |
www.microsoft.com |
  |
AnandTech: your source for hardware analysis and news |
Independent hands-on reviews of computer hardware such as motherboards, graphic cards, and CPUs. |
www.anandtech.com |
  |
hardware.com - Routers, switches, firewalls, servers, memory ... |
Supplier of new and refurbished networking hardware and approved and compatible network accessories. Located in the United Kingdom. |
www.hardware.com |
  |
Slashdot: News for nerds, stuff that matters |
From the article: "Although the news caused barely a ripple of reaction in the audience of software and hardware engineers, there are industry analysts who ... |
hardware.slashdot.org |
  |
InformationWeek HardwareTech Center |
Our hardware coverage ranges from mobile computers and PDAs to servers and supercomputers, and the infrastructure issues enterprises deal with every day. ... |
www.informationweek.com |
  |
What is hardware? - A Word Definition From the Webopedia Computer ... |
This page describes the term hardware and lists other pages on the Web where you can find additional information. |
www.webopedia.com |
  |
Google Directory - Computers > Hardware |
Hardware Central - http://www.hardwarecentral.com/ Computing-centric community providing vital information, support, tools and interaction facilities for ... |
www.google.com |
  |
Gifts: Unique Gifts & Gift Ideas at Restoration Hardware |
At Restoration Hardware, you'll explore an exceptional world of high quality unique gifts. Browse our products to find gift ideas & more at Restoration ... |
www.restorationhardware.com |
  |
HwB: The Hardware Book |
HwB provides you with circuits, pinouts, cable/adapter descriptions and other technical information. |
www.hardwarebook.net |
  |
Reg Hardware: Product News and Gadget Reviews from The Register |
More Gadgets Stuff. 5th December 2006 12:09 GMT. Author: Reg Hardware ... 27th November 2006 15:31 GMT. Author: The Hardware Widow ... |
www.reghardware.co.uk |
  |
red hat hardware compatibility lists |
hardware.redhat.com/ - Similar pages |
|
  |
TrueValue.com |
Here's our tip to hang strands of lights with ease. Jeanenne & Jim Tucker Plantation True Value Hardware Richmond, TX ... |
www.truevalue.com |
  |
A complete illustrated Guide to the PC Hardware |
A complete illustrated Guide to the PC Hardware, Logic and Architecture. 500 easy-read articles about the modern PC. Understand the basic architecture of ... |
www.karbosguide.com |
  |
|