WebJun 5, 2006 · Robust and secure image hashing Abstract: Image hash functions find extensive applications in content authentication, database search, and watermarking. This paper develops a novel algorithm for generating an image hash based on Fourier transform features and controlled randomization. WebIn this work we theoretically study synthetic images that are composed of a union or intersection of several mathematically specified shapes using thresholded polynomial functions (for e.g. ellipses, rectangles). We show how to produce a succinct sketch of such an image so that the sketch “smoothly” maps to the latent-coefficients producing ...
Robust Image Hashing With Ring Partition and Invariant Vector Distance …
WebSep 1, 2024 · The most important properties of the image hashing algorithm are robustness and discrimination [ 9 ]. The requirement of robustness is that the image hashing algorithm must map visually similar images to the same or similar hashes no matter whether their bit representations are the same or not. Weba mesh-based media hash-dependent image watermarking scheme that can achieve blind detection and has been veri-fied to be robust against signal processing attacks. Accord-ing to this study, our observations are summarized as fol-lows: (1) the common use of cryptographic hashing found in the literature is not suitable for both owners (due ot its owner designee meaning
Robust Image Hashing With Saliency Map And Sparse Model
WebOct 1, 2015 · Robustness and discrimination are two of the most important objectives in image hashing. We incorporate ring partition and invariant vector distance to image hashing algorithm for enhancing rotation robustness and discriminative capability. As ring partition is unrelated to image rotation, the statistical features that are extracted from … WebOct 20, 2024 · To solve these problems, we propose a robust and fast image hashing based on two-dimensional (2D) principal component analysis (PCA) and saliency map. The … WebOct 29, 2024 · In the recent digitization era, image hashing is a key technology, including image recognition, authentication and manipulation detection, among many multimedia security applications. The primary challenge in hashing schemes is to extract its robust feature. For a better understanding and design of a robust image hashing algorithm, it is … owner delphi