This paper discusses the general model of Non-uniform sampling image, and presents the sampling principle of discrete image.
该文讨论了采样图象的一般模型，提出了离散图象的采样准则，给出了一种迭代算法。
Using the discrete image degradation model, a block-based SVD filter scheme was applied for the image denoising with an automatically determined singular value rank.
从图像的退化离散模型出发，对图像进行逐层分块奇异值分解，并自动选取奇异值重组阶数以减少噪声对估计的影响。
But the current view of cognitive science leans more toward a new image: memories are like emergent events summed out of many discrete, unmemory-like fragments stored in the brain.
然而现代认知科学更倾向于一个新的观点：记忆好比由储存在脑中的许多离散的、非记忆似的碎片汇总起来而从中涌现出来的事件。
The aurora has a sinuous ribbon shape that separates into discrete spots near the lower right corner of the image.
丝带状蜿蜒的极光在图片右下角附近分散成离散的斑点。
The top image, from March 3, 2011, shows the storm in its early stages as dust rises from discrete points along the Iraq-Syria border.
上方的照片摄于 2011 年3 月 3 日，显示了此次沙尘天气过程的初始阶段，从中可以看到沙尘正从伊拉克和叙利亚边境附近的零散源地扬起。
Discrete Cosines Transform (DCT) is an effective tool for analysis image signal.
离散余弦变换是分析图像信号的有效工具。
The smooth operator is inferred based on the Optimal Discrete Filter's theory, which can reduce the influence of noise, false edges and image error.
在最优滤波器理论基础上，推导出离散域的最优平滑算子，抑制了图像的分割错误、噪声和伪边缘的影响。
Then it tells the knowledge of image compression. It introduces some methods of discrete quartered transform.
然后介绍了图像压缩的有关知识，讲述了离散正交变换的几种方法。
The image compression standard in PACS now is the JPEG standard based on the DCT (Discrete Cosine Transform) algorithm, which can only be applied in the limited areas.
目前在PACS系统中较多采用的是JPEG图像压缩标准，该标准采用以离散余弦变换算法为主的区块编码方式，但有一定的局限性。
In this paper, a multipurpose image watermarking algorithm based on chaos and DWT (Discrete Wavelet Transform) is proposed.
提出了一种基于混沌的DWT域多功能图像数字水印算法。
Data modeling includes sequential modeling and discrete modeling, and process modeling includes shape modeling, image modeling, graphics modeling, geometry modeling and hybrid modeling.
数据建模包括连续建模、离散建模。过程建模包括分形建模、图像建模、图形建模、几何建模、混合建模。
In order to improve the recognition effect and on the basis of analyzing the characteristic of MSTAR SAR image, a method of discrete wavelet analysis is proposed to extract features.
为了进一步提高MSTARSAR目标的识别效果，在分析了MSTAR SAR图像特点的基础上，提出了一种利用离散小波分解提取目标特征的方法。
An image completion approach based on discrete optimization was presented.
提出一种基于离散优化的图像修复方法。
A pixel contains the image information for a single point in the image, and has a discrete value between 0 (black) and 255 (white).
一个像素含有图像中单独的一个点的图像信息，并且含有在0(黑色)到255(白色)之间的离散的值。
In the first stage, trajectory planning is performed on image plane. Planned discrete points on image plane are then mapped to robotic joint space.
第一阶段在图像平面上规划运动轨迹，在图像平面上得到的离散规划点映射到机器人关节空间。
In this paper, a symmetric image encryption scheme based on composite discrete chaotic system is presented.
提出了一种基于复合离散混沌系统的对称图像加密算法。
Regarding this, a novel feature level approach to image fusion is proposed based on discrete dyadic wavelet transform for multi-scale image edge detection.
本文提出了一种基于离散二进小波变换的多尺度边缘检测和图像融合的方法，实现了特征级图像融合。
To overcome the shortcomings of traditional methods, a method of underwater image segmentation based on the discrete fractional Brownian random field was proposed to dispose underwater images.
采用传统图像检测方法存在目标区域定位不准确、目标细节信息丢失、目标形状变形等问题，本文提出一种基于离散分数布朗随机场模型的水下图像目标检测方法。
Then according to the properties of discrete Fourier transform, it deduces the discrete Fourier invariant features that are employed on facial image recognition.
依据离散傅里叶变换性质，推导出离散傅里叶变换的不变特征，并将其用于人脸图像识别。
The block-Based Discrete Cosine Transform (BDCT) suffers from visible blocking artifacts between adjacent image blocks at low bit rates, which reduces the image visual quality.
块离散余弦变换在低比特率时其恢复图像的块边界上会出现明显可见的方块效应，从而降低了图像的视觉质量。
A variety of quantitative measures of the image quality, including the continuous and discrete forms, is investigated.
本文论述了图象质量的各种定量测度，包括连续的和离散的形式。
The two-level discrete complex image method is used to compute the spatial Green's Function, and thus improves the speed to compute Green's function compared with the direct integral method.
该方法采用二级离散复镜像方法求解空间域的格林函数，与直接数值积分方法相比，提高了计算格林函数的速度。
Study two of the most important basic operations in digital image processing: 2-D Discrete Fourier Transform and 2-D Discrete Convolution Transform. Map them on RCA.
研究了数字图像处理中两种最常用的算子——离散二维傅立叶变换和离散二维卷积，并给出了它们在RCA上的映射策略和映射过程。
A steganalysis algorithm based on statistical characteristics of DCT (Discrete Cosine Transform) coefficients for JPEG (Joint Photographic Experts Group) image was proposed.
提出了一种基于DCT(离散余弦变换)系数统计特性的JPEG图像隐写分析算法。
To avoid calculating the time-consuming Sommerfeld's integrals, the discrete complex image method (DCIM) is employed to obtain spatial domain closed-form Greens function for planar-layered media.
使用离散复镜像方法(DCIM)快速得到平面分层介质的空间域的闭式格林函数，避免了费时的索末菲尔德积分。
A gray level image with rich details is used as a watermark and embedded in vector transform domain, more than scalar transform domain used traditionally such as discrete cosine transform domain, etc.
本文提出了一种新的数字静止图像的水印嵌入算法，该算法将含有丰富细节信息的灰度级图像作为水印，水印嵌入过程不是在传统的标量变换域(如离散余弦变换域等)内进行，而是在矢量变换域实现。
In order to improve the image quality of mesh simplification, a mesh simplification algorithm using quadratic error metrics was provided based on discrete curvature.
为了提高网格简化的图像质量，提出一种基于离散曲率的二次误差度量网格简化算法。
The discrete cosine transform (DCT) is an important mathematical tool in digital image processing and many other fields.
离散余弦变换(DCT)是数字图像处理等许多领域的重要数学工具。
A new image blind watermarking algorithm based on adaptive quantization step in discrete wavelet transform (DWT) is proposed, which can be used in copyright authentication.
提出了一种可用于版权认证的基于小波变换域自适应量化步长的图像盲水印算法。
This paper mainly presents some improvements on computing discrete cosine transforms (DCT) and quantization part in the standard of JPEG image processing.
主要对JPEG图像压缩标准中的DCT变换和量化部分提出了一些改进意见。
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