Joint Demosaicing and Subpixel-Based Down-Sampling for Bayer Images: A Fast Frequency-Domain Analysis Approach

A portable device such as a digital camera with a single sensor and Bayer color filter array (CFA) requires demosaicing to reconstruct a full color image. To display a high resolution image on a low resolution LCD screen of the portable device, it must be down-sampled. The two steps, demosaicing and down-sampling, influence each other. On one hand, the color artifacts introduced in demosaicing may be magnified when followed by down-sampling; on the other hand, the detail removed in the down-sampling cannot be recovered in the demosaicing. Therefore, it is very important to consider simultaneous demosaicing and down-sampling.

[1]  Yuk-Hee Chan,et al.  Color Demosaicing Using Variance of Color Differences , 2006, IEEE Transactions on Image Processing.

[2]  Lu Fang,et al.  Subpixel-Based Image Down-Sampling With Min-Max Directional Error for Stripe Display , 2011, IEEE Journal of Selected Topics in Signal Processing.

[3]  Rastislav Lukac,et al.  Color filter arrays: design and performance analysis , 2005, IEEE Transactions on Consumer Electronics.

[4]  John Platt,et al.  Displaced Filtering for Patterned Displays , 2000 .

[5]  Thomas W. Parks,et al.  Adaptive homogeneity-directed demosaicing algorithm , 2003, Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429).

[6]  Tadashi Sakamoto,et al.  Software pixel interpolation for digital still cameras suitable for a 32-bit MCU , 1998 .

[7]  Dimitrios Hatzinakos,et al.  Color image zooming on the Bayer pattern , 2005, IEEE Transactions on Circuits and Systems for Video Technology.

[8]  Aggelos K. Katsaggelos,et al.  Antialiasing Filter Design for Subpixel Downsampling via Frequency-Domain Analysis , 2012, IEEE Transactions on Image Processing.

[9]  Michiel Adriaanszoon Klompenhouwer,et al.  Subpixel image scaling for color‐matrix displays , 2003 .

[10]  Lu Fang,et al.  Novel 2-D MMSE Subpixel-Based Image Down-Sampling , 2012, IEEE Transactions on Circuits and Systems for Video Technology.

[11]  Lei Zhang,et al.  Color demosaicking via directional linear minimum mean square-error estimation , 2005, IEEE Transactions on Image Processing.

[12]  Peter B. Delahunt,et al.  Perceptual assessment of demosaicing algorithm performance , 2002, Proc. IEEE.

[13]  Joseph W. Goodman,et al.  A mathematical analysis of the DCT coefficient distributions for images , 2000, IEEE Trans. Image Process..

[14]  Yap-Peng Tan,et al.  Adaptive Filtering for Color Filter Array Demosaicking , 2007, IEEE Transactions on Image Processing.

[15]  S. Daly.  47.3: Analysis of Subtriad Addressing Algorithms by Visual System Models , 2001 .

[16]  John Platt,et al.  20.4: Displaced Filtering for Patterned Displays , 2000 .