The difference is considered in the bit plane transform . calculation is spent on removing the spectral correlation of higher bit plane images 位平面变换算法考虑了各位平面图像相关性的差异，将运算集中在去除高位相关性上，大大提高了运算效率。
At first we construct a new image transform : bit plane transform . we study on the property of bit plane transform and the application in hyperspectral image compression 首先构造了一种新的图像变换一位平面变换，给出了位平面变换的性质并且研究了其在图像压缩中的应用。
The technique constructs bpof based watermark from the image discrete fourier transformation and embeds the watermark into the bit plane ( s ) of the corresponding magnitude spectrum 它在图像离散fourier变换域构造基于二元纯位相滤波器的水印,并嵌入到其相应的幅值位平面中。
So there ’ s a great correlation among the second bitplane . so we offered a new arithmetic coding scheme in which the design of context models is based on level and bitplane . considering the difference between luma and chroma coefficients , we will make it separately 由于abslevel = 1的高概率出现,使得第二位平面具有很大的相关性,因此文中算术编码的上下文模型的设计方案主要基于level值和bitplane 。
It improves the calculation efficiency greatly and saves processing time . the calculation complexity of compression algorithm based on bit plane transform is o ( n ) , n is the number of pixels in the image . the compression ratio of algorithm is more than 1 . 9 位平面变换算法的理论运算复杂度为o ( n )量级( n为图像中像素的个数) ，低于其它常用的图像变换；压缩比达到了1 . 9以上，与其它超光谱图像压缩算法相当。
This thesis gives an overview of entropy coding in jpeg 2000 , especially the code - block based coding and context based adaptive arithmetic coding . to optimize the implementation of mq encoder , several methods are adopted to optimize the algorithm which is emulated in matlab 因此本文对jpeg2000标准中位平面编码和基于上下文的自适应二进制算术编码技术作了详细的分析和研究之后,对自适应算术编码算法优化使其更适合于硬件实现。
In this paper , based on the study of vga graphic displaying theory and the theory of synchronizing display between led large - screen display system and crt image , a method , bit plane addressing method which has good effect - . high ratio of performance to price and can be implemented easily in circuits is discussed . and the principle and the implementation of the multi - gray led display system with programmable logic devices cpld and fpga are analyzed in detail 本文在分析vga图象显示原理和led大屏幕与crt视频图像同步显示原理的基础上，论述了一种显示效果较好、性能价格比高、电路上易于实现的方法? ?位平面寻址法实现多灰度图象，并详细分析了应用复杂可编程逻辑器件cpld和在线可编程逻辑器件fpga实现多灰度彩色led大屏幕图像显示的原理及电路实现。
Combining the favorable capability of ebcot and characteristic of multi - wavelet ’ s coefficients , this article puts forward an integrated filter and pretreatment method based on approximated stairs . it processes the vector quantification of multi - wavelet ’ s coefficients and carries out the mix - scan compression arithmetic towards bit planes of ebcot 本文结合ebcot的良好性能和多小波变换系数特性,提出一种结合滤波器和基于近似阶的预处理方法,并对多小波变换系数进行重新排列和量化处理,对ebcot中位平面进行混合扫描方法相结合的压缩算法。
