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22 articles for “color ratio”

• Published Subscription 15 Jan 2021

  Embedding Dual Watermark in the G-Channel Image Using DCT and 2-D Walsh Code

  By B. P. Mishra, H. N. Pratihari, P. Das

  Abstract: This paper uses two dimensional Walsh coding for blind twofold watermarking algorithm which mixes robust copyright watermark and authentication information into various color images to maintain the copyright ownership of the host images. First watermark i.e. fingerprint image is embedded in the DCT low frequency coefficients of the G-channel image of host image where as the second watermark i.e. mobile phone number is embedded in the DCT block of G-channel …

  Published in Current Trends in Signal Processing · Vol. 5, Issue 2, 2015 · pp. 27–34 Read article →

• Published Subscription 5 Apr 2016

  Image Enhancement by Correction of Cllipped Pixels: An Exemplification

  By Vijendra Kr. Shakya, Nishchol Mishra, Sanjeev Sharma

  Abstract: Conventional images store an extremely constrained element scope of brightness. The genuine luma in the bright region of such pictures is regularly lost because of section. At the point when section changes the R, G, B shading ratios of a pixel, shading twisting likewise happens. In this paper, we propose an algorithm to improve both the luma and chroma of the clipping pixels. Our method is in view of the …

  Published in Journal of Artificial Intelligence Research & Advances · Vol. 3, Issue 1, 2016 · pp. 30–38 Read article →