PW318图像处理器在提高图像清晰度中的应用

PW318图像处理器是一个SDRAM图像处理集成芯片,能够提高画质,实现帧频转换等,已被用于LCD、等离子体显示器、投影仪及多媒体显示器中。根据PW318图像处理器的主要参数,分析电路的组成及主要模块的功能,采用PW318处理可显著提高其图像的清晰度。

供应链中大宗原燃料结算管理探讨

近年来国内钢铁行业大整合,大宗原燃料不论是进口,还是国内自产,都趋向于大批量、多频次的采购节奏。位于供应链末端的结算工作,也必须跟上短、频、快的采购节奏。基于ERP系统的大宗原燃料结算,通过有效借助质量计量系统、ERP系统,结算管理精准清晰、有据可依,为整个财务管理提供了强有力的数据支撑。

SAR Image Coregistration Using Fringe Definition Detection

In order to overcome the limitation of cross correlation coregistration method for Synthetic Aperture Radar （SAR） interferometric pairs with low coherence, a new image coregistration algorithm based on Fringe Definition Detection （FDD） is presented in this paper. The Fourier transformation was utilized to obtain spectrum characteristics of interferometric fringes. The ratio between spectrum mean and peak was proposed as the evaluation index for identifying homologous pixels from interferometric images. The satellites ERS-1/2 C-band SAR acquisitions covering the Yangtze River plain delta, eastern China and ALOS/PALSAR L-band images over the Longmen Shan mountainous area, southwestern China were respectively employed in the experiment to validate the proposed coregistration method. The testing results suggested that the derived Digital Elevation Model （DEM） from FDD method had good agreement with that from the cross correlation method as well as the reference DEM at high coherence area. However, The FDD method achieved a totally improved topographic mapping accuracy by 24 percent in comparison to the cross correlation method. The FDD method also showed better robustness and achieved relatively higher performance for SAR image eoregistration in mountainous areas with low coherence.

资本市场将扮演更重要角色

未来20年,创业时代繁荣需要靠多元化的资本市场几经波折,走走停停的新股发行注册制改革,今年落地是铁板钉钉的事。注册制和核准制本质上有何不同,它的执行将给证券市场和宏观经济带来什么样的影响?第一,带来上市公司信息的披露进一步透明和完善。实行注册制之后,上市公司信息披露的完备性监管将趋于严格。一是证监会对上市公司披露的信息范围、清晰准确及详细程度的要求将进一步提高。