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1. 发明授权

US5357583A Graphics processing apparatus for smoothing edges of images 失效
标题翻译：用于平滑图像边缘的图形处理装置
公开(公告)号：US5357583A
公开(公告)日：1994-10-18
申请号：US914746
申请日：1992-07-16
申请人： Takashi Sato , Hiroki Kubozono , Hitomi Kumazaki , Masaki Sano , Kan Tomita , Yoshiaki Hanyu
发明人： Takashi Sato , Hiroki Kubozono , Hitomi Kumazaki , Masaki Sano , Kan Tomita , Yoshiaki Hanyu
IPC分类号： G06K15/12 , H04N1/409 , G06K9/00
CPC分类号： H04N1/4092 , G06K15/1223
摘要： A graphics processing apparatus includes a first detection part for detecting, with respect to each pixel of an image, whether or not an edge of the image starts on a scanline, and for setting a control data depending on whether or not the edge starts on the scanline, a second detection part for detecting a duration of beam power modulation corresponding to one or plural edge pixels being intersected by a line defined in the image, and for setting a duration data, a third detection part for detecting an outermost edge pixel in the edge pixels, a part for generating a beam power data indicating an intensity level of light beam power corresponding to the outermost edge pixel, an output part for outputting the image by means of a printer having a light source for emitting a light beam, and a control means for continuously modulating light beam power of the light source from the intensity level to a predetermined level with respect to the edge pixels, so that an image with smooth edges is generated by modulating the light beam power of the light source in accordance with the control data and the duration data.
摘要翻译：图形处理装置包括第一检测部分，用于相对于图像的每个像素检测图像的边缘是否在扫描线上开始，并且根据边缘是否开始在扫描线上开始来设置控制数据扫描线，第二检测部分，用于检测对应于由图像中定义的线相交的一个或多个边缘像素的波束功率调制的持续时间，以及用于设置持续时间数据;第三检测部分，用于检测第一检测部分中的最外边缘像素边缘像素，用于产生指示与最外边缘像素对应的光束功率的强度水平的光束功率数据的部分，用于通过具有用于发射光束的光源的打印机输出图像的输出部分，以及用于将光源的光束功率从强度水平相对于边缘像素连续调制到预定水平的控制装置，使得具有平滑边缘的图像是通过根据控制数据和持续时间数据调制光源的光束功率而产生。

2. 发明授权

US5325474A Graphic output device including antialiasing capability governed by decisions regarding slope of edge data 失效
标题翻译：图形输出装置包括由边缘数据斜率决定所决定的抗锯齿能力
公开(公告)号：US5325474A
公开(公告)日：1994-06-28
申请号：US781739
申请日：1991-10-23
申请人： Hitomi Kumazaki , Masaki Sano , Yoshiaki Hanyu , Kan Tomita , Naomi Inoue , Akira Ohori
发明人： Hitomi Kumazaki , Masaki Sano , Yoshiaki Hanyu , Kan Tomita , Naomi Inoue , Akira Ohori
IPC分类号： B41J2/485 , G03G15/22 , G06K15/12 , G09G5/20 , G09G5/28 , G09G5/36 , H04N1/23 , H04N1/409 , G06F15/62
CPC分类号： G06K15/1209 , G06K15/128 , G09G5/20
摘要： A graphic output device for removing the aliases of the edges of a vector image by an antialiasing procedure and effectively outputting image data undergone such processing. Whether or not the inclination of an input vector is greater than 45 degrees is determined. In the event of outputting the result of antialiasing processing, a pulse width modulation system (vertically long dot diameter) is selected if the inclination of the vector is greater than 45 degrees, or a power modulation system (horizontally long dot diameter) is selected if it is smaller than 45 degrees.
摘要翻译：图形输出装置，用于通过抗混叠程序去除矢量图像的边缘的别名，并有效地输出经过这样的处理的图像数据。确定输入矢量的倾斜度是否大于45度。在输出抗锯齿处理结果的情况下，如果矢量的倾斜度大于45度，则选择脉宽调制系统（垂直长点直径），或者如果选择了功率调制系统（水平长点直径），则它小于45度。

3. 发明授权

US5555360A Graphics processing apparatus for producing output data at edges of an output image defined by vector data 失效
标题翻译：用于在由矢量数据定义的输出图像的边缘处产生输出数据的图形处理装置
公开(公告)号：US5555360A
公开(公告)日：1996-09-10
申请号：US680697
申请日：1991-04-04
申请人： Hitomi Kumazaki , Yoshiaki Hanyu , Masaki Sano
发明人： Hitomi Kumazaki , Yoshiaki Hanyu , Masaki Sano
IPC分类号： B41J2/485 , G06F17/16 , G06T11/00 , G09G5/00 , G09G5/20 , G09G5/24 , G09G5/28 , G09G5/36
CPC分类号： G06T11/001
摘要： A graphics processing apparatus carries out an antialiasing for obtaining an output image having smooth edges, enabling a speedy computation of approximate shading area rates of pixels by making use of neither a subpixel dividing process nor a shading pixel counting process. The apparatus comprises a discriminating part for discriminating the presence of an end point pixel at an edge portion of an image defined by a vector data, a computing part for computing the number of edge pixels by extracting two integer parts a, b from x coordinate values Xa, Xb of two points where a scanline intersects the vector data, a setting part for setting a x coordinate value of the end point pixel to the Xb only when an end point pixel is found at the edge portion, an approximate point part for determining an approximate point value C' from a prescribed factor c.times.(n-1) computed by a decimal fraction c extracted from the x coordinate value Xa, a memory part for storing a lookup table containing a set of predetermined data, and an approximate area factor part for determining an approximate shading area factor k by making reference to the lookup table stored in the memory part.
摘要翻译：图形处理装置执行用于获得具有平滑边缘的输出图像的抗混叠，能够通过利用子像素分割处理和阴影像素计数处理来快速计算像素的近似着色面积率。该装置包括鉴别部分，用于鉴别由矢量数据定义的图像的边缘部分处的端点像素的存在;计算部分，用于通过从x个坐标值提取两个整数部分a，b来计算边缘像素的数量; Xa，Xb，其中扫描线与矢量数据相交;一个设置部分，用于仅在边缘部分处找到终点像素时，将端点像素的坐标值设置为Xb，用于确定边缘部分的近似点部分从由x坐标值Xa提取的由小数部分c计算的规定因子cx（n-1）的近似点值C'，存储包含一组预定数据的查找表的存储部分和近似面积因子部分用于通过参考存储在存储器部分中的查找表来确定近似阴影区域因子k。

4. 发明授权

US5404431A Image drawing with improved area ratio approximation process 失效
标题翻译：具有改进的面积比近似过程的图像绘图
公开(公告)号：US5404431A
公开(公告)日：1995-04-04
申请号：US978513
申请日：1992-11-18
申请人： Hitomi Kumazaki , Yoshiaki Hanyu , Takashi Sato
发明人： Hitomi Kumazaki , Yoshiaki Hanyu , Takashi Sato
IPC分类号： B41J2/485 , G06T11/20 , G09G5/20 , G09G5/24 , G06F15/72 , G06F15/62
CPC分类号： G06T11/203
摘要： A cross point detection part detects respective positions of cross points of an image's edge crossing sides of respective pixels. An approximated area ratio determination part determines respective approximated area ratios obtained as a result of approximating respective area ratios of areas occupied by the image in the respective pixels by using the positions of the cross points. A darkness determination part determines respective darknesses of the respective pixels in accordance with the approximated area ratios.
摘要翻译：交叉点检测部检测各像素的边缘相交边的交叉点的相应位置。近似面积比确定部分通过使用交叉点的位置来确定作为近似各个像素中的图像所占据的面积的各个面积比的结果而获得的各个近似面积比。黑暗决定部根据近似面积比确定各像素的各自的黑度。

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