Visual cryptography for general access structures
Information and Computation
Color Processing in Digital Cameras
IEEE Micro
Geographic location tags on digital images
MULTIMEDIA '03 Proceedings of the eleventh ACM international conference on Multimedia
New visual secret sharing schemes using probabilistic method
Pattern Recognition Letters
Aspect ratio invariant visual secret sharing schemes with minimum pixel expansion
Pattern Recognition Letters
Software pixel interpolation for digital still cameras suitable for a 32-bit MCU
IEEE Transactions on Consumer Electronics
Digital camera zooming based on unified CFA image processing steps
IEEE Transactions on Consumer Electronics
A novel cost effective demosaicing approach
IEEE Transactions on Consumer Electronics
Normalized color-ratio modeling for CFA interpolation
IEEE Transactions on Consumer Electronics
Data adaptive filters for demosaicking: a framework
IEEE Transactions on Consumer Electronics
IEEE Transactions on Consumer Electronics
IEEE Transactions on Image Processing
Color plane interpolation using alternating projections
IEEE Transactions on Image Processing
Color filter array demosaicking: new method and performance measures
IEEE Transactions on Image Processing
Multichannel watermarking of color images
IEEE Transactions on Circuits and Systems for Video Technology
Effective color interpolation in CCD color filter arrays using signal correlation
IEEE Transactions on Circuits and Systems for Video Technology
Demosaicked image postprocessing using local color ratios
IEEE Transactions on Circuits and Systems for Video Technology
Color image zooming on the Bayer pattern
IEEE Transactions on Circuits and Systems for Video Technology
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This paper presents a color filter array (CFA) image indexing approach. To enhance the functionality of single-sensor consumer electronics such as digital cameras, imaging-enabled mobile phones and wireless personal digital assistants (PDAs), the proposed solution embeds the metadata information to a CFA image using a common discrete cosine transform (DCT) based watermarking scheme. Depending on a consumer electronic device employed, the metadata information can be used to indicate ownership, capturing device identification numbers, time and location information. The metadata information can be extracted from the gray-scale, mosaic-like CFA image or the full-color, demosaicked image using PC software commonly available by camera manufacturers or with conventional public image database tools. Simulation studies reported in the paper indicate that the proposed CFA indexing approach does not affect the performance of the demosaicking methods which produce full-color images that are visually identical to those obtained by demosaicking of the non-indexed CFA data.