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In this paper we present a novel diffusion filter, designed for strongly oriented patterns. Unlike most previous diffusion methods, our filter employs global orientation information, the diffusion process being steered according to this information. Using a scalar diffusivity, as used in the classical Perona Malik filter, we are able to eliminate the(More)
Automation is an open subject in DNA microarray image processing, aiming reliable gene expression estimation. The paper presents a novel shock filter based approach for automatic microarray grid alignment. The proposed method brings up significantly reduced computational complexity compared to state of the art approaches, while similar results in terms of(More)
– We present a robust watermarking method for still images using a discrete wavelet transform. The proposed scheme makes use of the image properties in order to make the watermark less perceptible to the HVS. The watermark is embedded in the coefficients of all subbands (except the LL subband), using a subband-adaptive thresholding scheme. We compare the(More)
Automation, computational time and cost are open subjects in microarray image processing. The present paper proposes image processing techniques together with their implementations in order to eliminate the shortcomings of the existing software platforms for microarray image processing: user intervention, increased computational time and cost. Thus, for(More)