Analysis Of Discrete Cosine Transform Region

imaging application. This is because the crucial data required for the classification phase are derived at this stage. Feature extraction is the process of estimating

These data items for recovering a tile image T are integrated as a five-component bit stream of the form in which the bit segments represent the values of the index of B, the rotation angle of T , the means of T and B, the standard deviation quotients, and total number of tiles, respectively. In more detail, the numbers of required bits for the five data items in M are

In accession to the binary images, the proposed method may be tested on discrete color images also. These type of

Suppose that v(x)= v1x + v2x 2+ … + vn-1xn-1 is host image and modify in the host image bits after insert watermark image results in the following watermarked image:

After reading the digital image into internal memory, the program uses cvThreshold function to transfer the colorful image into a grayscale one. Then according to the optimal variance, transfer the grayscale image to a binary image. After that, the program uses cvDilate and cvErode functions to do dilation and erosion operation. Thus, in order to improve the accuracy rate, cvSmooth function is used to smooth the edges of the image. Then program uses canny operator to detect and outline edges. At the end, circle hough transform is used to detect the circles in the images, which are the sign of human head. So the program

An extremely important computer forensic service is the preservation of evidence. In this step a forensic image is made of all pertinent data. This image is actually what is being analyzed and the original source where the data was extracted is put in a safe and confidential environment. The security and authenticity of this information is analyzed very carefully and handled only by a digital forensics expert.

Images that have been photoshopped using software such as Adobes photoshop program should carry watermarks. Many of the image photoshopped are just for practical jokes, but some are for more spurious reasons. Most of the photoshopping occurs on magazines or in hollywood to make actors or models to look close to perfect.

Information security is a major concept in today’s industrial and computer era, so security must be higher to protect the confidential data. Information security plays major role in computer and network security with the use of different cryptography algorithms that includes the encryption and decryption of data with the uses of the algorithm and the key. By means of text or numerical key for the encryption can be dangerous because with the several hack attacks that a key can be broken. So I have proposed a new mechanism that will replace the text key with the image pixels and can gain high security which cannot be easy to break without prior knowledge.

Various methods of image registration exist. However, this paper will focus on only five of the available methods.

4 different thresholding algorithms are calculated and the one which covers results of other selected thresholds is applied on the optimal single-channel image

This is an image that can be seen when you hold the bill up to the light. The watermark will be a face, and it will be the same face as the portrait on the bill. It will also be on the right side of the front of the bill. There are several ways to detect a fake bill using the

the vectors of the X matrix. The code edits each of the elements of the W matrix by using the

Three levels of rotations have been implemented. First the original watermarked image is being rotated by 90o , then 180o and at last the image is being rotated by 270o in clock wise direction.

Authors proposed a synchronization tech unique to recover geometrically attacked image via. Detection of desired image corner.

Abstract: Steganography is the method of hiding a secret message with in a cover medium. The intention of steganography is secret communication to hide the existence of a message from a third party. It has found use in variously in diplomatic, personal, military and intellectual property application. This paper emphasis is on digital applications and current and future use of steganography, focusing on hiding information in online image files. Examples of software tools that employ steganography to hide data inside of other files as well as software to detect such hidden files will also be presented.