压缩编码标准 meaning in English
jpeg
Examples
- This paper introduces the origin of jpeg 2000 , jpeg 2000 itself and its application background as well as the still - image compression and coding system . jpeg 2000 standard is thoroughly analyzed in this paper . the features of jpeg 2000 such as region of interest coding , random access and progressive transmission are discussed in this paper
Jpeg2000是目前国际上最新的静态图像压缩编码标准，本文分析了jpeg2000的由来和应用背景，并由静态图像编码压缩系统的背景知识出发，对jpeg2000标准进行了深入的研究，对该标准的新特性，包括roi编码、随机访问技术、渐进传输等进行了探讨。 - Here we mainly research the metheds on video acquisition and video codec , as well as video data inter - communication . in this system , we use fpga , manufatured by altera co . ltd , to acquisite the image resource precisely . also we implement high speed and complex logic design to control the whole system and pc104 interface with it . here the captured image data is stored to sdr - sdram outside fpga . then it is compressed according to jpeg2000 compression standard . the compressed image streaming data is stored in sdr - sdram
在本设计中利用altera公司的cycloneep1c6的fpga芯片完成高清vga图像信号的精确采集,并利用其完成复杂而高速的逻辑控制及时序设计,实现了与pc104上位机接口程序设计,并将采集的数字视频信号存储在外扩存储空间sdr - sdram中;利用tidm642完成将采集到的数字图像信息按照jpeg2000压缩编码标准进行处理。 - Generally speaking , a coding algorithm must be low complexity and work at high speed . in this paper , the coding methods are studied to increase coding speed . firstly , a novel method based on temporal prediction to detect all - zero dct coefficients is proposed , which can greatly reduce the coding cost and maintain a good tradeoff between correct detecting ratio and false detecting ratio with little additional computation
本文以h . 263压缩编码标准为基本框架，针对其中影响压缩效率和速度的瓶颈展开研究，包括快速运动搜索算法的研究、预判零方法的研究以及mmx技术在视频编码中的应用等，提出了一种基于时域预测的预判零新方法，在不影响重建视频质量的条件下具有较高的判别效率，节约了大量dct变换和量化的时间，提高了编码的速度，达到了实时性要求。 - Consequently , in order to reduce the bandwidth , we must take actions to compress the original digital . scientists have been studying the speech compressing technology and have got many valuable achievements since the 1980 ' s . mpeg - 4 celp is one of the important achievements with high voice synthesis quality at the rate of 2 ~ 24kb / s
在语音处理领域，语音压缩编码技术已发展了近二十年，取得了许多成功，其中iso组织于1996年制定的mpeg - 4celp语音压缩编码标准是重要的成果之一，包括了码率范围为2 24kb s的码率，能提供很好的合成语音。 - Some key issues in video transmission based on h . 263 , including video compression , error resilient and video quality evaluation are studied in this paper . finally , a video transmission demo in lan is implemented . when a video stream is conveyed through a vvireless channel or internet to the receiver end , it is exposed to high levels of bit errors or packet loss
本文研究了基于h . 263视频压缩编码标准的视频传输若干关键问题，包括：视频传输的抗误码技术、快速高效的压缩编码技术、视频质量评价方法等，并且实现了一个局域网内视频传输演示实验系统。