Video Image Compression Techniques
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
vissu_52
Active In SP
**

Posts: 1
Joined: Dec 2009
#1
21-12-2009, 02:31 PM


I want the report on Video Image Compression Techniques
Reply
ajukrishnan
Moderator
*****

Posts: 213
Joined: Dec 2009
#2
22-12-2009, 07:50 PM

Digitization includes sampling of image and quantization of sampled values. After converting the image intobinary, processing is performed which maybe:
-Image enhancement
- Image reconstruction
- Image compression
Image compression deals with minimizing the no of bits required to represent an image.
An image in the "real world" is considered to be a function of two real variables, for example, F(x,y) with F as the amplitude (e.g. brightness) of the image at the position (x,y). An image contains regions-of-interests to which specific image processing operations are performed. For digitization, the given Image is sampled on a discrete grid and each sample or pixel is quantized using a finite number of bits. images be available in digitized form, that is, arrays of finite length binary words for image processing. The digitized image is processed by a computer and to display it, it is converted to analog form.


Video compression
There are loseless and lossy compression standards.
Lossless Compression: Here compressed video is numerically identical to the original content on a pixel-by-pixel basis and Motion Compensation is not used
“ Bit Plane Coding:A video frame with NxN pixels is taken and each pixel is encoded by K bits. Then Converts this frame into K x (NxN) binary frames and each binary frame is encoded independently.

“ Predictive Coding: The difference between the actual pixel value, and its most likely prediction is called the differential or the error signal and its value is entropy encoded.

Applications of Lossless Compression are in Medical Imaging, Contribution video applications etc

Lossy Compression:
“ Transform Coding (MPEG-X)
Its desirable characters are Content decorrelation: packing the most amount of energy in the fewest number of coefficients, Fast implementation, Content-Independent basis functions
used transformations are:
-Karhunen-Loeve Transform (KLT)
-Discrete Fourier Transform (DFT/FFT)
-Discrete Cosine Transform (DCT)
-Walsh-Hadamard Transform (WHT)


“ Vector Quantization (VQ)
Based on Shannonâ„¢s Theory that Purely digital signals could be compressed by assigning shorter code-words to more probable signals and that the maximum achievable compression could be determined
from a statistical description of the signal and that Coding vectors or groups of symbols (speech samples or pixels), rather than individual symbols or samples.
“ Subband Coding (Wavelets)
Each frame is filtered to create a set of smaller frames (subbands) and then Each band is encoded separately (different bit rates, encoder, etc¦)
“ Fractals
This is based on mandelbrot set and concept of Self similarity.
“ Model-Based Coding
models Designed for different objects in natural scenes encoder and the decoder are given copies of the models.

Detailed seminar and presentation report download:

.pdf   compression techniques.pdf (Size: 163.91 KB / Downloads: 210)
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
Reply
seminar paper
Active In SP
**

Posts: 6,455
Joined: Feb 2012
#3
25-02-2012, 11:05 AM


to get information about the topic vedio compression technique full report ppt and related topic refer the link bellow
topicideashow-to-mpeg-2-video-compression-technique-full-report

topicideashow-to-mpeg-video-compression--842

topicideashow-to-video-image-compression-techniques

topicideashow-to-image-processing-compression-technique
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  matlab code for image blur reduction via adaptive tonal correction Guest 1 46 31-10-2016, 09:51 AM
Last Post: ijasti
  image steganography lsb algorithm in php Guest 1 52 31-10-2016, 09:35 AM
Last Post: jaseela123
  vtu 6th sem data compression notes Guest 1 69 29-10-2016, 04:17 PM
Last Post: amrutha735
  thesis topics for image processing Guest 1 53 29-10-2016, 03:17 PM
Last Post: Dhanabhagya
  documentation on intelligent wireless video cameras Guest 1 72 29-10-2016, 02:56 PM
Last Post: amrutha735
  image fusion using wavelet transform matlab code Guest 1 65 29-10-2016, 02:35 PM
Last Post: amrutha735
  matlab code for image encryption using elliptic curve cryptography Guest 1 52 29-10-2016, 02:34 PM
Last Post: Dhanabhagya
  srs document for image steganography pdf Guest 1 93 11-10-2016, 04:19 PM
Last Post: amrutha735
  bucket wheel escalator project image see Guest 1 51 11-10-2016, 04:14 PM
Last Post: amrutha735
  sales promotion techniques lux soap Guest 1 66 11-10-2016, 02:30 PM
Last Post: amrutha735