WebSep 25, 2002 · In the field of content-based visual information analysis, the detection of visual features is a significant topic. In order to process video data efficiently, visual … WebFeb 17, 2024 · The proposed technique uses different types of edge detection filters like Prewitt, Sobel, Laplacian and Canny in the existing image steganography using edge based data hiding in DCT domain algorithm.
An Edge Detection Method in DCT Domain - ScienceDirect
WebMay 15, 2008 · @article{osti_21402593, title = {Edge-detection algorithm based on DCT continuous extension technique}, author = {Asatryan, D. G., E-mail: [email protected] and … WebMay 23, 2024 · fft/ifft transformations, DCT encoding/decoding using various techniques (zig-zag scanning, quantization), SNR calculations, filters (Gaussian, median, bilateral), … qeh charlottetown jobs
A Robust Digital Watermarking for Medical Images Based on PHTs …
WebMay 17, 2024 · An edge can be defined as a set of connected pixels that forms a boundary between two disjoint regions. There are three types of edges: Horizontal edges; Vertical edges; Diagonal edges; Edge Detection is a method of segmenting an image into regions of discontinuity. It is a widely used technique in digital image processing like WebThis paper focuses onresearch of two popular blur detection algorithms, DCT (Discrete Cosine Transform) and edge detection algorithm. It also offers the implementation of the blurred face image detection and classification system based on these two algorithms. At last it contrasts these two algorithms and draws a conclusion. WebFeb 18, 2024 · Among the edge detection-based methods, the Canny operator, the Sobel operator and the Prewitt operator are widely used, and each of these operators has its own advantages. ... Bae, S.H.; Kim, M. DCT-QM: A DCT-based quality degradation metric for image quality optimization problems. IEEE Trans. Image Process. 2016, 25, 4916–4930. … qeh cramond clinic