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    • 3. 发明授权
    • Hardware-accelerated anti-aliased vector graphics
    • 硬件加速抗锯齿矢量图形
    • US07567258B2
    • 2009-07-28
    • US11247752
    • 2005-10-11
    • Ashraf A. MichailKun ZhouGregory D. SwedbergAdrian Secchia
    • Ashraf A. MichailKun ZhouGregory D. SwedbergAdrian Secchia
    • G09G5/00
    • G06T11/203G06T11/40G06T15/503G06T15/87
    • In order to render a primitive, the primitive is subdivided into trapezoids and triangles. The subdivision occurs using scanline-aligned lines. These simple scanline-aligned regions are further subdivided so that the primitive is divided into simple scanline-boundaried trapezoids and other complex scan shapes. The simple scanline-boundaried trapezoids are rasterized. One rasterization method uses a texture map containing slope-based coverage information to edge areas. Gouraud shading may be used to provide the anti-aliasing effects on the scanline-boundaried trapezoids. The simple scanline-boundaried trapezoids may also be rasterized using a software rasterizer. Complex scans are rasterized using a software rasterizer. As data is already rasterized, it is thereby efficiently transferred to the GPU.
    • 为了渲染原始图形,原始图形被细分为梯形和三角形。 使用扫描线对齐的线条进行细分。 这些简单的扫描线对齐区域进一步细分,使得原语被划分成简单的扫描线界限梯形和其他复杂的扫描形状。 简单的扫描线边界梯形被光栅化。 一种光栅化方法使用包含基于边缘的覆盖信息的纹理贴图到边缘区域。 可以使用Gouraud阴影来提供扫描线边界梯形上的抗锯齿效应。 简单的扫描线边界梯形也可以使用软件光栅化器进行光栅化。 使用软件光栅化器对复杂扫描进行光栅化。 由于数据已经被光栅化,因此其被有效地传送到GPU。
    • 4. 发明授权
    • Hardware-accelerated anti-aliased graphics
    • 硬件加速抗锯齿矢量图形
    • US06954211B2
    • 2005-10-11
    • US10610662
    • 2003-06-30
    • Ashraf A. MichailKun ZhouGregory D. SwedbergAdrian Secchia
    • Ashraf A. MichailKun ZhouGregory D. SwedbergAdrian Secchia
    • G06T11/00G06T11/20G06T15/50
    • G06T11/203G06T11/40G06T15/503G06T15/87
    • In order to render a primitive, the primitive is subdivided into trapezoids and triangles. The subdivision occurs using scanline-aligned lines. These simple scanline-aligned regions are further subdivided so that the primitive is divided into simple scanline-boundaried trapezoids and other complex scan shapes. The simple scanline-boundaried trapezoids are rasterized. One rasterization method uses a texture map containing slope-based coverage information to edge areas. Gouraud shading may be used to provide the anti-aliasing effects on the scanline-boundaried trapezoids. The simple scanline-boundaried trapezoids may also be rasterized using a software rasterizer. Complex scans are rasterized using a software rasterizer. As data is already rasterized, it is thereby efficiently transferred to the GPU.
    • 为了渲染原始图形,原始图形被细分为梯形和三角形。 使用扫描线对齐的线条进行细分。 这些简单的扫描线对齐区域进一步细分,使得原语被划分成简单的扫描线界限梯形和其他复杂的扫描形状。 简单的扫描线边界梯形被光栅化。 一种光栅化方法使用包含基于边缘的覆盖信息的纹理贴图到边缘区域。 可以使用Gouraud阴影来提供扫描线边界梯形上的抗锯齿效应。 简单的扫描线边界梯形也可以使用软件光栅化器进行光栅化。 使用软件光栅化器对复杂扫描进行光栅化。 由于数据已经被光栅化,因此其被有效地传送到GPU。
    • 9. 发明授权
    • Generating resized images using ripple free image filtering
    • 使用无纹图像滤波生成调整大小的图像
    • US06816622B2
    • 2004-11-09
    • US09982435
    • 2001-10-18
    • James F. BlinnAndrew C. GodfreyMichael D. MarrAdrian Secchia
    • James F. BlinnAndrew C. GodfreyMichael D. MarrAdrian Secchia
    • G06K940
    • G06T3/4007G06T5/002G06T5/20G06T2200/12
    • An optimal filter kernel, formed by convolving a box filter with a filter of fixed integer width and unity area, is used to perform image resizing and reconstruction. The optimal filter has forced zeros at locations along a frequency scale corresponding to the reciprocal of the spacing of one or more pixels that comprise a source image to be resized. When a rescale value for a source image is selected, the optimal filter kernel is computed, mapped to the source image, and centered upon a location within the source image corresponding to the position of an output pixel to be generated. The number of pixels that lie underneath the optimal filter kernel is established by multiplying the number of pixels that comprise the width of the source image by the selected rescale value. Upon mapping the optimal filter kernel, the output pixel values that comprise the resized image are then evaluated by processing the one or more source image pixels, such as through interpolation. Alternatively, the output pixel values of the resized image are calculated by performing partial integral analysis with respect to a standard filter kernel of fixed width and unity area. The output pixel values are calculated by multiplying the pixel value for each pixel under the kernel by the area of the standard filter kernel surrounding the pixel. The products are then summed to reveal the output pixel value, and placed into the output image buffer. Both of these methods speed up the computation process, while producing a ripple free output image.
    • 10. 发明授权
    • System and method for performing a recoloring operation sequence on color objects
    • 用于在彩色对象上执行变色操作序列的系统和方法
    • US06628828B1
    • 2003-09-30
    • US09556214
    • 2000-04-24
    • Michael D. StokesAdrian SecchiaGilman K. Wong
    • Michael D. StokesAdrian SecchiaGilman K. Wong
    • G06K900
    • G06T3/00H04N1/56
    • A system and method for recoloring color objects selectively applies color processing operations in a particular pipelined sequence to offer improved performance and quality of color processing. The recoloring sequence includes a transformation by a 5×5 matrix that handles various types of transformations in the color space of the color object, a gamma correction, a bi-level thresholding operation, and a conversion into a color space, such as the CMYK space, for an output device. Each of these operations in the recoloring sequence may be selectively activated or deactivated depending on the attributes of the color object being processed and the desired recoloring effects. The transformation with the 5×5 matrix allows various transformation operations, such as rotation, scaling, translation, shearing, and perspective in the color space of the color object to be combined and performed in a single step, resulting in significantly improved processing efficiency.
    • 用于变色颜色对象的系统和方法选择性地以特定流水线序列进行颜色处理操作,以提供改进的颜色处理的性能和质量。 再现序列包括通过处理彩色对象的颜色空间中的各种类型的变换的5×5矩阵的变换,伽马校正,双层阈值操作以及到诸如CMYK空间的颜色空间的转换, 用于输出设备。 取决于正在处理的颜色对象的属性和期望的再现效果,可以选择性地激活或去激活重新排序中的这些操作。 使用5x5矩阵的变换允许在单个步骤中组合和执行的颜色对象的颜色空间中的各种变换操作,例如旋转,缩放,平移,剪切和透视,导致显着提高的处理效率。