QQ客服 官方微博 反馈留言

浏览/检索结果: 共6条，第1-6条 帮助 限定条件 专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Plasmon-enabled spectrally narrow ultraviolet luminescence device using Pt nanoparticles covered one microwire-based heterojunction 期刊论文 Optics Express, 2021, 卷号: 29, 期号: 14, 页码: 21783-21794 作者:  K. Ma;  B. Li;  X. Zhou;  M. Jiang;  Y. Liu and C. Kan 收藏  |  浏览/下载：6/0  |  提交时间：2022/06/13 Topology Optimization of Capillary, Two-Phase Flow Problems 期刊论文 Communications in Computational Physics, 2017, 卷号: 22, 期号: 5 作者:  Deng, Y. B.;  Z. Y. Liu and Y. H. Wu 收藏  |  浏览/下载：17/0  |  提交时间：2018/06/13 ZnO基半导体电致发光材料与器件的理论研究 学位论文 博士: 中国科学院大学, 2015 作者:  徐辑廉 收藏  |  浏览/下载：25/0  |  提交时间：2015/11/30 氧化锌  p型掺杂  量子级联激光器  第一性原理计算  有限元法   多功能纳米复合材料的制备、表征及其光、磁、 传感等性能的研究 学位论文 博士: 中国科学院大学, 2014 王岩岩 收藏  |  浏览/下载：233/0  |  提交时间：2014/08/21 Design of binocular vision 3D reconstruction system based on motion recovery 期刊论文 Guangxue Jingmi Gongcheng/Optics and Precision Engineering, 2014, 卷号: 22, 期号: 5, 页码: 1379-1387 Wang X.; Yuan K.; Yu X.; Zhang M.-C. 收藏  |  浏览/下载：34/0  |  提交时间：2015/04/24 Compression of remote sensing image based on Listless Zerotree Coding and DPCM (EI CONFERENCE) 会议论文 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China Chen S.-L.; Huang L.-Q. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 The data quantity of remote sensing image is very large. Furthermore  the lowest frequency subband contains the main energy of original image and reflects the coarse of original image after remote sensing image is transformed by wavelet  so it is very important to the reconstructed image. Therefore a hybrid image compression method based on Listless Zerotree Coding (LZC) and DPCM is presented  namely  the lowest frequency subband is compressed by DPCM and others are compressed by LZC. LZC is a kind of zerotree coding algorithm for hardware implementation  which is based on SPIHT and substitutes two significant bit maps for three lists in SPIHT algorithm. Thereby LZC significantly reduces the memory requirement and complexity during encoding and decoding procedure. But LZC doesn't recognize the significance of grandchild sets  so the PSNR values of LZC are lower than SPIHT's and the compression speed drops. It is improved by adding a significant bit map that recognizes the significance of grandchild sets. A comparison reveals that the PSNR results of the hybrid compression method are 2 dB higher than those of LZC  and the compression speed is also improved.