By Emre Celebi, Michela Lecca, Bogdan Smolka
This textual content covers cutting-edge colour snapshot and video enhancement concepts. The publication examines the multivariate nature of colour image/video info because it relates to distinction enhancement, colour correction (equalization, harmonization, normalization, balancing, fidelity, etc.), noise removing and smoothing. This e-book additionally discusses colour and distinction enhancement in imaginative and prescient sensors and purposes of snapshot and video enhancement.
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Additional resources for Color Image and Video Enhancement
Therefore, a novel strategy was proposed. This strategy computes two estimation candidates for each missing component and the decision for the best one is made a posteriori. The approach presented by Hirakawa et al.  is representative. They first reconstructed the green planes Gh and Gv along horizontal and vertical directions with the approximated optimal FIR. Then the missing red and blue components were 2 Image Demosaicing 31 Fig. 12 Compute the gradient magnitude of the top interpolation direction estimated in both directions with each of the green plane candidates.
Obviously, the estimation using these highly correlated pixels will be more accurate. With regard to the interpolation equations, Eqs. 20b), 26 R. Zhen and R. L. Stevenson two different derivations have been proposed : one is to combine the spectral correlation and the spatial correlation , and the other is to utilize filter techniques in the frequency domain [4, 44]. Considering these interpolation equations are often used in the literature, we will discuss each derivation in detail. ˆl 1.
To decrease the aliasing effect and improve the midfrequency response, the information coming from the high-frequency bands of the red samples 1 is considered. In a green–red row, the red component is sampled with an offset of one sample with respect to the green component. 28) where R(ω) and Rs (ω) are similarly defined as G(ω) and Gs (ω). If we interpolate the subsampled red plane with a filter h1 and add the filtered result to Eq. 27), 1 The information coming from the high-frequency bands of the blue samples can also be used to facilitate the recovery of the green plane.
Color Image and Video Enhancement by Emre Celebi, Michela Lecca, Bogdan Smolka