what is difference between bitmap image and jPeg image?

Answer 1

Bitmap images are commonly used by Microsoft Windows programs, and the Windows operating system itself. Lossless compression can be specified, but some programs use only uncompressed files. These files will have the extension of *.bmp while the file size is generally very huge.

JPEG [Joint Photographic Experts Group] is used extensively for photos and other continuous tone images on the web. Uses lossy compression by trying to equalize eight by eight pixel blocks; the quality can vary greatly depending on the compression settings.

Answer 2

the two maximum elementary by utilising far are GIF and JPEG records. the two considered one of those formats encode static (as detrimental to lively) bitmap photographs. In a bitmap photograph, the image record has to define the acceptable colour of each pixel interior the image. as an occasion, think of a common bitmap on the internet that's 4 hundred by utilising 4 hundred pixels. To define this photograph, you may desire 24 bits according to pixel for one hundred sixty,000 pixels, or 480,000 bytes. that could desire to be a great photograph record, so the two the GIF and JPG formats compress the image in diverse techniques. In a GIF photograph, the variety of hues is decreased to 256 and then "runs" of comparable-colour pixels are encoded in a colour+numberOfPixels format. as an occasion, if there are a hundred pixels on a line with the colour 40-one, the image record shops the colour (40-one) and the dimensions of the run (a hundred). A JPG record makes use of a much greater complicated technique to compress photographs, like pictures, the place the colour of each pixel is diverse. A GIF record creates a suited reproduction of the unique, whilst a JPG would not. See question 289 for some info. An lively GIF is a sequence of GIF records all bonded at the same time and displayed one after the different. With adequate panes, you may get very real looking animations. besides the undeniable fact that, the dimensions of the record is the sum of the GIF records used to create the sequence, and that could upload up directly.

Answer 3

http://en.wikipedia.org/wiki/JPEG

http://en.wikipedia.org/wiki/BMP