i-manager's Journal on Image Processing (JIP)


Volume 3 Issue 2 April - June 2016

Research Paper

A Novel Watermarking Approach based on Fuzzy Wavelets for High Authentication and Robustness

U. Ravi Babu*
*Professor, Department of Computer Science and Engineering, Narsimha Reddy Engineering College, Secunderabad, India.
Babu, U.R. (2016). A Novel Watermarking Approach based on Fuzzy Wavelets for High Authentication and Robustness. i-manager's Journal on Image Processing, 3(2), 1-7.

Abstract

The present study derives a novel scheme to embed the watermark for high authentication, robustness, security and copyright protection based on Fuzzy Wavelet. So far no researcher has attempted to use fuzzy logic in the spatial domain. The present paper developed a new technique called Fuzzy Wavelet (FW) approach for selecting the pixel locations to insert the watermark. The main aim of the proposed method is embedding the watermark image fully and to extract the watermarked image in an efficient manner. The approach is called Fuzzy Wavelet Region based Even, Odd (FWREO) method. The watermark bits are embedded in the pixel location selected by the FW approach by using the novel approach called Region based Even Odd (REO) method. The proposed method mainly consists of two steps. In step one, identify the pixel locations where the watermark is embedded. In the second step, REO method is applied on the FW approach of the first step. To find the effectiveness of the proposed method, the present method is tested on 24 images with the size of 512×512. The proposed gives comparative results when compared with other existing methods.

Research Paper

Comparative Analysis of Edge Detection Techniques

Navkamal Kaur* , Beant Kaur**
* PG Scholar, Department of Electronics and Communication Engineering, Punjabi University, Patiala, India.
** Assistant Professor, Department of Electronics and Communication Engineering, Punjabi University, Patiala, India.
Kaur, N., and Kaur, B. (2016). Comparative Analysis of Edge Detection Techniques. i-manager's Journal on Image Processing, 3(2), 8-17.

Abstract

This paper presents a comparative analysis of traditional edge detector operator with the proposed algorithm on grayscale images. The proposed algorithm is based on mathematical morphology and thresholding. Mathematical morphology is a new technique for edge detection based on set theory. It has been used for feature extraction and feature detection. Basic operations of Mathematical morphology are dilation, erosion, opening and closing. Based on these operations, experiment results are obtained using square structuring elements of different sizes with different images. The authors adopt the thresholding to change the brightness of edges of image. Detection of edge is a preprocessing step in image processing. Edge detection has been done using traditional operators (Canny, LoG, Prewitt and Sobel). The edge detection process had been used to reduce the amount of data and filter out useless information. The aim of this paper is to obtain the useful edges of the image object. This paper prefer round shape object images to extract the edges using different combination of structuring elements. Performance evaluation of the proposed algorithm is based on parameters like Root Mean Square Error (RMSE). This parameter is used to calculate the image quality of an output image. The experiment result shows that the proposed algorithm has more superior results than traditional operators.

Research Paper

Contrast Enhancement based Brain Tumour MRI Image Segmentation and Detection with Low Power Consumption

B. Shoban Babu* , S. Varadarajan**, S. Swarnalatha***
* Associate Professor, Department of Electronics and Communication Engineering, SVCET, Chittoor, India.
** Secretary, Telangana State Council of Higher Education, Tirupati, India.
*** Associate Professor, Department of Electronics and Communication Engineering, SVUCE, Tirupati, India.
Babu, B. S., Varadarajan, S., and Swarnalatha, S. (2016). Contrast Enhancement based Brain Tumour MRI Image Segmentation and Detection with Low Power Consumption. i-manager's Journal on Image Processing, 3(2), 18-25.

Abstract

Medical image processing is the most challenging topic in the research field. Brain tumour is a serious life altering disease condition. Image segmentation plays a significant role in the estimation of suspicious regions from the medical images. In this paper, two algorithms have been proposed; one algorithm for image enhancement and the other algorithm for image segmentation. The MRI image wherein the brain tumour is to be detected, is enhanced using the proposed technique called Power Constrained Contrast Enhancement (PCCE). Thus, the obtained enhanced image is subjected to image segmentation using threshold point method, to detect the brain tumour. The performance of the proposed method is analysed by computing the parameters of the brain tumour like volume, area, Contrast, Emissive display, mean and standard deviation. These parameter values are compared with the earlier methods, and it found that the performance of the proposed technique of brain tumour detection is quite satisfactory over the earlier existing techniques.

Research Paper

Comparative Analysis of Edge Detection Methods and its Implementation using UTLP Kit

R. Hemalath* , N. Santhiyakumari**, M. Madheswaran***, S. Suresh****
* Assistant Professor, Department of Electronics and Communication Engineering, Knowledge Institute of Technology, Salem, Tamilnadu, India.
** Professor and Head, Department of Electronics and Communication Engineering, Knowledge Institute of Technology, Salem, Tamilnadu, India.
*** Principal, Mahendra Engineering College, Namakkal, Tamilnadu, India.
**** Chief Medical Director, Mediscan Systems, Hospital and Health Care, Chennai, India.
Hemalatha, R., Santhiyakumari, N., Madheswaran, M., and Suresh, S. (2016). Comparative Analysis of Edge Detection Methods and its Implementation using UTLP Kit. i-manager's Journal on Image Processing, 3(2), 26-34.

Abstract

In today's scenario, several advanced techniques are used in diagnosing images prevailed from medical imaging system. Edge detection methods reduce the quantity of data and remove ineffective information while preserving important structural properties in an image. The objective of this paper is to compare the performance of different edge detection methods like canny deriche, Morpho gradient, Prewitt, Ridge Valley, Roberts, Sobel and Zero are crossing of the Common Carotid Artery image. The statistical parameters such as minimum and maximum pixel values, mean, standard deviation, skewness and kurtosis are considered to study the performance of various edge detection methods with the aid of Aphelion Dev software. The edge detecting image has been implemented in Unified Technology Learning Platform to increase the processing speed of an image. It has been observed that Canny Deriche edge detection method is more suitable than other methods for detecting accurate edges. This can be used in medical applications to detect and extract the features of an image.

Research Paper

Performance Analysis of Two Level Multiple Image Formats

Prakriti Gautam* , Deepak Sharma**
* PG Scholar, Department of Electronics and Telecommunication Engineering, CSIT, Durg, India.
** Associate Professor, Department of Electronics and Telecommunication Engineering, CSIT, Durg, India.
Gautam, P., and Sharma, D. (2016). Performance Analysis of Two Level Multiple Image Formats. i-manager's Journal on Image Processing, 3(2), 35-40.

Abstract

Steganography is the process of hiding information in a carrier in order to provide the secrecy of text, music, audio and images. It can be defined as the study of imperceptible communication that deals with the ways of concealing the existence of communicating messages. For hiding secret information in various file formats, there exists a large variety of Steganographic techniques where some are more complex than others and all of them have respective strong and weak points. The aim of the paper is to provide the user, a comparative analysis of the first and second level steganography using the MLSB embedding technique in various types of file formats as the cover image like JPEG, BMP, PNG, etc. With the help of results obtained, the best format for both the levels of hiding can be concluded. The secret image used is also taken of all different formats so that a conclusion can be drawn that which type of format is suitable for the cover as well as secret image.