CHAPTER 1 INTRODUCTION An image is an artifact that records visual perception, for instance a two-dimensional image, which has a similar look to some subject—usually a physical object or a person. Images may be two-dimensional, like screen show, photographs or it can also be three dimensional, such as hologram or sculpture. Images will be captured by optical devices like cameras. A digital image is essentially a collection of pixel values arranged in rows and columns. Each pixel consists of 8 bits
Abstract this paper explains about image compression review using DWT (Discrete Wavelet Transform) and DLT (Discrete Cosine Transform) method, the compression in the image must be closely related to the use of memory and the transmission of digital images. The wavelet transform decomposes the image into shape. For display and graphical display with DCT and DWT. DWT is used for compression application. Wavelet transform divides the information of an image into approximation and details sub-signals
human being. The simple and best example of the signal is the traffic signal which gives the information to the drivers about the right way to conflicting movement of traffic at an intersection of road. The various real time signals are speech, text, image and video. For example, if anybody can share some information, then the information is not same during the entire communication period rather it varies with time. Another example is that if communication are happened in any lecture room without any
Compare different animation formats M2 Animated Gifs are images in the gif file format that are able to move and change. An animated gif contains a number of images or frames, these frames are shown in a specific order in order to show animation. An animated gif can loop constantly or end after a few sequences. Animated gifs do not take up a lot of space on websites as the file size is small. Animated gifs have 256 colours available so they are best used for simple text and shapes. Advantages
Firstly I will explain what is signal ,signal processing ,analogue viruses digital signal types of signal processing their advantages and disadvantages and their comparison .I-e which one is better …….why analog signal processing (ASP) is replaced with digital signal processing (DSP). What is Signal??? Any physical quantity that varies with time or any other independent variable is called signal. What is signal processing??? Signal processing is concerned with the improvement of quality of a signal
words Cryptos meaning cover and grafia meaning writing [1] defining it as covered writing. In image cryptography the information is hidden exclusively in images. Cryptography is the art and science of secret communication .It is the practice of encoding/embedding secret information in a manner such that the existence of the information is invisible. The original files can be referred to as cover text, cover image, or cover audio. After inserting the secret message it is referred to as Crypto-medium. A
FEATURE EXTRACTION APPROACHES: Principal Component Analysis: PCA is a useful statistical technique that has found application in fields such as face recognition and image compression, and is a common technique for finding patterns in data of high dimension. Technically, a principal component can be defined as a linear combination of optimally-weighted observed variables. In order to understand the meaning of this definition
paper mainly focuses on the biomedical image processing area. Noise is an inevitable parameter that must be considered in the medical images. The main problem of mammogram is that like other medical data it is also affected with noise during the acquisition of the mammogram images. So it is a challengeable task for researchers to denoise the mammogram images while preserving the important features of the image. The main noises affecting the mammogram images are salt and pepper, guassian, speckle
CHAPTER -1 INTRODUCTION The outbreak of digital image processing in 1920’s has revolutionalised the communication process [l]. The images were the first language used by the humans for interaction. The images in the form of pictures were carved on stone which became the first language for communication and these carvings were available for the future generation. With the technical advancements in recent times; image processing techniques has became an important part of the communication system. From
CHAPTER-2 LITERATURE REVIEW 2.1) Chronic wound and quality of life Wound healing, one of the typical organic process in the human body, accomplished through four unequivocally and exceptionally customized stages known as hemostasis, inflammation, proliferation and remodeling. It is vital that all these four stages must happen in the best possible grouping and time allotment for an injury to heal effectively. Intrusions or prolongation in the process prompts delayed injury healing or a non-healing