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    • 1. 发明申请
    • Method and system for creating interactive walkthroughs of real-world environment from set of densely captured images
    • 用于从一组紧密捕获的图像创建现实世界环境的交互式演练的方法和系统
    • US20040240741A1
    • 2004-12-02
    • US10452020
    • 2003-05-30
    • Daniel G. AliagaIngrid Birgitta CarlbomThomas A. FunkhouserDimah V. Yanovsky
    • G06T009/00G06K009/36
    • G06T15/205
    • Techniques for creating interactive walkthroughs or visualizations of real-world environments. Such environments for which interactive walkthroughs may be created may comprise large interior spaces (e.g., buildings), wherein a space may comprise multiple rooms. The interactive walkthroughs may be photorealistic and rendered from arbitrary viewpoints at interactive rates. In one aspect of the invention, a technique for generating a visualization representative of an environment comprises the following steps. A dense set of image data is captured from the environment. The captured image data is compressed for storage. A portion of the compressed image data may then be decompressed so as to render a visualization representative of the environment from a selected novel viewpoint. Another portion of the image data may be prefetched and decompressed such that captured image data surrounding the selected novel viewpoint is available to be rendered. The visualization of the environment may then be rendered from the selected novel viewpoint.
    • 用于创建现实环境的交互式演练或可视化的技术。 可以创建交互式演练的这种环境可以包括大的内部空间(例如,建筑物),其中空间可以包括多个房间。 互动演练可能是照片写实的,并以互动率从任意观点呈现。 在本发明的一个方面,一种用于生成表示环境的可视化的技术包括以下步骤。 从环境中捕获一组密集的图像数据。 捕获的图像数据被压缩以便存储。 然后可以对压缩图像数据的一部分进行解压缩,以便从选定的新观点呈现代表环境的可视化。 图像数据的另一部分可以被预取和解压缩,使得围绕所选择的新视点的捕获图像数据可用于呈现。 然后可以从所选择的新观点呈现环境的可视化。
    • 2. 发明申请
    • Graphics display module and method
    • 图形显示模块及方法
    • US20040051714A1
    • 2004-03-18
    • US10647805
    • 2003-08-25
    • Ira LiaoTitan Sun
    • G06T009/00
    • H04N19/61
    • A graphics display module for use with an image pickup device, an image data storage unit and an image display device in a computer system includes a data compressing device and a data decompressing device. The data compressing device is in communication with the image pickup device, and compresses a digital image data received from the image pickup device into a compressed image data that is then transmitted to the image data storage unit for storage. The data decompressing device is in communication with the image data storage unit and the image displaying device, and decompresses the compressed image data stored in the image data storage unit to recover the digital image data that is then transmitted to the image displaying device for display.
    • 用于计算机系统中的图像拾取装置,图像数据存储单元和图像显示装置的图形显示模块包括数据压缩装置和数据解压缩装置。 数据压缩装置与图像拾取装置通信,并且将从图像拾取装置接收的数字图像数据压缩成压缩图像数据,然后将其传送到图像数据存储单元进行存储。 数据解压缩装置与图像数据存储单元和图像显示装置通信,并且解压缩存储在图像数据存储单元中的压缩图像数据,以恢复然后发送到图像显示装置进行显示的数字图像数据。
    • 4. 发明申请
    • System for geometrically accurate compression and decomprission
    • 用于几何精确压缩和分解的系统
    • US20030025703A1
    • 2003-02-06
    • US10039748
    • 2001-12-18
    • Stanley Joel OsherHong-Kai Zhao
    • G06T009/00
    • G06T9/004
    • A system is disclosed providing accurate compression, storage, transmission and reconstruction of both simulated and empirical data representing terrain and other physical or hypothetical signals or surfaces, in one or multiple dimensions. In one embodiment, a gradient of an original surface is generated, and the data representing that gradient is compressed, then stored and/or transmitted. Reconstruction of the gradient yields an accurate representation of the original gradient. An alternative embodiment includes taking a second gradient of the original surface before compression, in which case reconstruction yields the second gradient, from which the first gradient can also be recovered.
    • 公开了在一个或多个维度上提供表示地形和其他物理或假想信号或表面的模拟和经验数据的精确压缩,存储,传输和重建的系统。 在一个实施例中,产生原始表面的梯度,并且表示该梯度的数据被压缩,然后被存储和/或发送。 梯度的重建产生了原始梯度的精确表示。 替代实施例包括在压缩之前采用原始表面的第二梯度,在这种情况下,重建产生第二梯度,也可以从其恢复第一梯度。
    • 5. 发明申请
    • Image display apparatus
    • 图像显示装置
    • US20030020722A1
    • 2003-01-30
    • US10188742
    • 2002-07-05
    • Mikio Miura
    • G09G005/36G06T009/00
    • G06T9/00
    • An image display apparatus comprises a line buffer unit which stores binary image data, the binary image data being divided into a plurality of line portion data, each line portion data having a fixed length. Pattern matching units are connected in parallel with the line buffer unit and receives the line portion data respectively, each pattern matching unit determining whether an input pattern of a related line portion data matches with one of reference patterns. When the match occurs each pattern matching unit outputs a truth signal indicating the value one, and otherwise each pattern matching unit outputs a falseness signal indicating the value zero. A judgment unit receives the truth or falseness signals from the pattern matching units and determines how many times the match with respect to one of the reference patterns occurs in succession based on the received signals, the judgment unit encoding lengths of runs for the line portion data having the fixed length based on results of the determination and storing the codes in the video memory.
    • 图像显示装置包括存储二进制图像数据的行缓冲器单元,二进制图像数据被划分为多个行部分数据,每个行部分数据具有固定长度。 模式匹配单元与线缓冲单元并联连接并分别接收线路部分数据,每个模式匹配单元确定相关线路部分数据的输入模式是否与参考模式之一匹配。 当匹配发生时,每个模式匹配单元输出指示值1的真值信号,否则每个模式匹配单元输出指示值为零的伪造信号。 判断单元从模式匹配单元接收真实信号或伪造信号,并且基于接收到的信号确定相对于一个参考模式匹配的次数,判断单元编码行部分数据的运行长度 具有基于确定结果的固定长度并将代码存储在视频存储器中。
    • 6. 发明申请
    • Methods and apparatus for data compression
    • 用于数据压缩的方法和装置
    • US20020186891A1
    • 2002-12-12
    • US10198505
    • 2002-07-18
    • Michael Alan Peters
    • G06K009/36H03M007/00G06K009/46G06T007/00G06T009/00
    • H03M7/40G06T9/007
    • The invention provides for the application of a plurality of compression schemes to data such that improved compression ratios are achieved. A first embodiment provides for compression of each pixel by one of a plurality of different entropy-based compression schemes based upon a probability cost analysis. A second embodiment provides for compression of each pixel based on a hybrid context formed using a plurality of compression schemes for improved probability determination, and thus improved entropy encoding. In embodiments of the invention, a context compression scheme similar to JBIG is applied, as well as an inverse scheme. The context scheme forms a statistical context from a concatenated sequence of previous pixel values. The inverse scheme provides a gray value estimation method based upon previous pixel values and respective threshold values. Statistics are maintained with respect to the actual current pixel value and the difference between an estimated gray value and the current pixel threshold value.
    • 本发明提供了将多种压缩方案应用于数据,从而实现了改进的压缩比。 第一实施例提供了基于概率成本分析的多个不同基于熵的压缩方案中的一个压缩每个像素。 第二实施例提供了基于使用多个压缩方案形成的用于改进的概率确定的混合上下文来压缩每个像素,从而改进了熵编码。 在本发明的实施例中,应用类似于JBIG的上下文压缩方案以及逆方案。 上下文方案从先前像素值的级联序列形成统计上下文。 逆方案提供了基于先前像素值和相应阈值的灰度估计方法。 相对于实际当前像素值和估计灰度值与当前像素阈值之间的差异来维持统计。
    • 7. 发明申请
    • Method and a system for coding rois
    • 方法和一种罗盘编码系统
    • US20020126906A1
    • 2002-09-12
    • US09827313
    • 2001-04-06
    • Charilaos ChristopoulosJoel AskelofMathias Larsson
    • G06T009/00H04N001/41
    • H04N19/649H04N19/124H04N19/127H04N19/132H04N19/17H04N19/63
    • In a method and a system for encoding and transmission of still images having at least one region of interest (ROI), the ROI coefficients of an image transformed into the frequency domain, preferably using a wavelet transform are encoded so that they are transmitted first and can be decoded by a receiver without transmission of the boundary of the ROI. In a preferred embodiment the coefficients belonging to the ROI are shifted so that the minimum ROI coefficient is larger than the largest background coefficient. A receiver can then perform an opposite procedure and thereby obtain the ROI. By specifying how much the coefficients need to be shifted in order to avoid sending shape information several advantages are achieved. Thus, it is possible to avoid sending shape information and to avoid shape encoding at encoder side. Furthermore, there is no need for a shape decoder at receiver side, and there is no need for the receiver to produce the ROI mask. Also, in another preferred embodiment, the shifting (or scaling operations) required at encoder and decoder are also avoided.
    • 在用于编码和传输具有至少一个感兴趣区域(ROI)的静止图像的方法和系统中,优选地使用小波变换转换成频域的图像的ROI系数被编码,使得它们首先被传输, 可以由接收机进行解码而不传输ROI的边界。 在优选实施例中,属于ROI的系数被移位,使得最小ROI系数大于最大背景系数。 然后,接收器可以执行相反的过程,从而获得ROI。 通过指定系数需要移动多少以避免发送形状信息,实现了几个优点。 因此,可以避免发送形状信息并避免编码器侧的形状编码。 此外,在接收机侧不需要形状解码器,并且不需要接收器来产生ROI掩模。 此外,在另一优选实施例中,也避免了编码器和解码器所需的移位(或缩放操作)。
    • 10. 发明申请
    • System and method for flattening spans
    • 平整跨度的系统和方法
    • US20040120593A1
    • 2004-06-24
    • US10378543
    • 2003-03-03
    • David J. EarlMark JonesJohn Jefferies
    • G06T009/00H04N001/419
    • H04N1/41G06T9/005
    • A system and method for computing a run-length encoded raster in which spans are successively added to a raster or overlapping spans are flattened. Spans are temporarily expanded into a pixel array representing part of the raster, where entries in the pixel array are references to color values and other property data. Successive spans modify the pixel array. References in the array are then compared to run-length encode the partial raster. Remaining parts of the raster are processed similarly. In one embodiment, the array contains pointers referencing color and property information. In another embodiment, the array contains small indexes referencing a color palette.
    • 用于计算运行长度编码光栅的系统和方法,其中跨度被连续地添加到光栅或重叠跨度。 跨度被临时扩展为表示栅格的一部分的像素阵列,其中像素阵列中的条目是对颜色值和其他属性数据的引用。 连续跨度修改像素阵列。 然后将数组中的引用与运行长度编码部分栅格进行比较。 类似地对光栅的剩余部分进行处理。 在一个实施例中,阵列包含引用颜色和属性信息的指针。 在另一个实施例中,阵列包含引用调色板的小索引。