查询词典 Snow-Image

It's obvious that semantic retrieval is more reasonable than retrieval based on low features. So we need to study image retrieval based on region segmentation, image hierarchical classification and image semantic label standard.

显然语义级检索是比基于低层特征检索更合理的图像检索方法，因此有必要研究基于区域分割的图像检索、基于语义级的图像分级分类和图像的语义标记标准。

First, an initial projection matrix is obtained through homography between an image and a scene plane. The homograph matrix between two images, i. e., the image plane and the scene plane, can then be calculated from matching points of these two images. Thus the projection matrix of every next frame can be calculated from homograph matrix between the current image plane and the previous one. Registration of virtual objects is finally completed.

根据这个原理，首先通过一个景物平面和图像之间的单应得到初始状态相机的投影矩阵，然后对后面每帧图像和前一帧进行自然特徵点匹配，通过匹配点对计算出图像之间以及图像与景物平面的单应关系，由此就可以得到每一帧图像对应的相机的投影矩阵，从而完成虚拟物体的注册。

An image set including the image pair for which the infinity homography is known and a third image are selected.

一个像组包括无穷远单应矩阵已知的像对和被选择的第三图像。

Generally, the main research points in this paper are as follows:Image Stitching is one of the key technology in virtual reality construction,we proposes two ambient light independent panorama mosaics methods based on feature: image stitching algorithm based on stationary wavelet decomposition and homomorphic filtering, and image stitching algorithm based on ring projection and energy function optimization.

主要研究内容如下：图像拼接是虚拟场景建模的主要技术之一，针对光照变化图像序列提出了两种基于特征的图像拼接算法：基于静态小波序贯特征匹配和同态滤波的图像拼接算法以及基于圆投影和能量函数优化的图像拼接算法。

This paper introduce a way to remove the thin cloud of CBERS- 02 CCD,first decompose the image of CCD,and then homomorphic filter the image of decomposed,last reconstruct the image of en- hanced.

为了促进CBERS-02星CCD传感器图像的定量化应用，在对以往有关遥感图像薄云去处方法的研究的基础上，本文提出了对含薄云的CBERS-02 CCD图像进行适当层次的小波分解，然后对分解的图像进行同态滤波，最后进行图像重构而去除薄云的方法。

Image ; databases ; image management ; image processing ; human-computer dialogue

图象；数据库；图象管理；图象处理；人机对话

To deblur edge after image magnifying,an adaptie edge sharpness presering image magnification is put forword,which can fit edges of any direction,gradient and amplitude,utilizing the gradient imgormation of the image and the properties of the hyperbolic tangent function haing reiewing the character of a typical edge.

针对图像放大后出现边缘模糊的现象，论文考察了典型边缘的特征，利用图像的梯度信息和双曲正切函数的性质，提出了一种较好地拟合任意方向、陡度和幅度的边缘，因此能够保持边缘锐度的自适应图像放大算法。

The invention belongs to the field of image fusion technology, in particular to a multi-spectral image and panchromatic image fusion method based on residual hypercomplex symplectic decomposition.

本发明属于图像融合技术领域，具体为残差超复数对偶分解的多光谱与全色图像融合方法。

The analytical results show that the image distortions from the watermark are spread throughout the whole image and are spread into the three channels of a color host image by a hypercomplex inverse Fourier transform. So the proposed watermarking algorithm can realize a good combination for the imperceptibility and security of the watermark.

分析表明提出的方法通过超复数傅氏逆变换，可以把水印带来的误差扩散到整幅图像，并且是分散到红、绿、蓝三色的各个分量上，从而实现数字水印的不易感知性和安全性的良好结合。

The method comprises the following steps of : respectively constructing models of residual images of a multi-spectral image and a panchromatic image by using hypercomplex, and respectively subjecting the hypercomplex residual models of the multi-spectral image to hypercomplex symplectic decomposition along the grayscale axis direction to obtain a simplex portion containing brightness information and a perplex portion including chromaticity information.

该方法首先用超复数分别对多光谱图像和全色图像的残差图像建模，并对多光谱图像的超复数残差模型沿灰度轴方向分别进行超复数symplectic分解，得到包含亮度信息的simplex部分和包含色度信息的perplex部分。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&