Brassica napus cytochrome P450 superfamily: Origin from parental species and involvement in diseases resistance, abiotic stresses tolerance, and seed quality traits.

Cytochromes P450 monooxygenases (CYP450s) constitute the largest enzymic protein family that is widely present in plants, animals, and microorganisms, participate in numerous metabolic pathways, and play diverse roles in development, metabolism, and defense. Rapeseed (Brassica napus) is an important oil crop worldwide and have many versions of reference genome. However, there is no systemically comparative genome-wide analysis of CYP450 family genes in rapeseed and its parental species B.

Blind deconvolution of a noisy degraded image.

We develop a unified algorithm for performing blind deconvolution of a noisy degraded image. By incorporating a low-pass filter into the asymmetric multiplicative iterative algorithm and extending it to multiframe blind deconvolution, this algorithm accomplishes the blind deconvolution and noise removal concurrently. We report numerical experiments of applying the algorithm to the restoration of short-exposure atmosphere turbulence degraded images.

Blind image deconvolution by means of asymmetric multiplicative iterative algorithm.

A novel scheme for blind deconvolution is presented. Adapted from our previous multiplicative iterative algorithm, a more general scheme--the asymmetric multiplicative iterative algorithm--is derived. Additionally, in order to obtain a meaningful estimate, a penalized asymmetric multiplicative iterative algorithm is used to further improve the performance of this scheme.

Blind deconvolution: multiplicative iterative algorithm.

A new algorithm has been developed for performing blind deconvolution on degraded images. The algorithm naturally preserves the nonnegative constraint on the iterative solutions of blind deconvolution and can produce a restored image of high resolution. Furthermore, benefiting from the multiplicative form, the algorithm is free from the instability of numerical computation.