Ren-Jie Wang | Search PubMed

PubMed2005

[Advances in the study of epididymal protease inhibitor].

The epididymal protease inhibitor (Eppin) has recently been cloned in human and mice, which is specifically expressed in the epididymis and testis. Eppin is a cystine-rich secretory protein which contains signal peptide, WAP and BPTI motifs. Eppin is involved in sperm maturation and fertilization, and in the innate immune system of human epididymis. Immunocontraception with Eppin is effective and reliable, but its safety is to be further proved. This paper summarizes the effects of Eppin of fertilization and immunity, as well as its utilization in immunocontraception.

Animals↗

PubMedDate not supplied

Image-based color ink diffusion rendering.

This paper proposes an image-based painterly rendering algorithm for automatically synthesizing an image with color ink diffusion. We suggest a mathematical model with a physical base to simulate the phenomenon of color colloidal ink diffusing into absorbent paper. Our algorithm contains three main parts: a feature extraction phase, a Kubelka-Munk (KM) color mixing phase, and a color ink diffusion synthesis phase. In the feature extraction phase, the information of the reference image is simplified by luminance division and color segmentation. In the color mixing phase, the KM theory is employed to approximate the result when one pigment is painted upon another pigment layer. Then, in the color ink diffusion synthesis phase, the physically-based model that we propose is employed to simulate the result of color ink diffusion in absorbent paper using a texture synthesis technique. Our image-based ink diffusing rendering (IBCIDR) algorithm eliminates the drawback of conventional Chinese ink simulations, which are limited to the black ink domain, and our approach demonstrates that, without using any strokes, a color image can be automatically converted to the diffused ink style with a visually pleasing appearance.

Algorithms↗