专利汇可以提供Method and apparatus for thresholding image data专利检索,专利查询,专利分析的服务。并且A system is described for thresholding graphics images to reduce the information content for transmission and reproduction and which uses a particular image data thresholding technique that may be used to obtain display images with a number of intensity levels. Firstly, an histogram of the image to be encoded is generated and analyzed to determine essential parameters. In particular, the background colour of the image is determined by summing the histogram elements to find the median (B) of the distribution, that is, the point at which the half sum of total pixels is reached. The extrema (A. G) of the histogram are calculated and the skew is determined from the position of the median (B) with respect thereto. If the difference between the median (B) and the black extreme (G) is less than half the difference between the median (B) and the white extreme (A) then the background of the image is deemed to be black, otherwise, the image will be defined as having a white background. After the background colour is determined, the width of the background is determined from the difference between the median (B) and the background colour extreme (A), and the edge between the background and foreground regions, is defined as being at a distance one-half the background width from the median (B) in the direction of the foreground colour extreme (G). A sequence of threshold levels (D, E, F) may then be determined using this edge (C) as a base, by setting them at points disposed at fractionally different distances between the edge (C) and the foreground colour extreme (G). Preferably the levels are set at points 1/8, 1/4 and 1/2 the defined distance or at 3/16, 3/8 and 3/4. The selected points will respectively define the threshold levels such as between white/gray-white, gray-white/gray-black, and gray-black/black. Thus, the resulting image may then, after encosing and transmission, be decoded and displayed on a suitable teleconferencing system or fascimile machine with four intensity levels.,下面是Method and apparatus for thresholding image data专利的具体信息内容。
标题 | 发布/更新时间 | 阅读量 |
---|---|---|
铁路货车转向架侧架断裂故障图像识别方法 | 2020-05-08 | 924 |
基于压力测量的模式切换装置及方法 | 2020-05-12 | 159 |
人流量检测装置及检测方法 | 2020-05-08 | 561 |
一种演播室系统和节目视频制作方法及装置 | 2020-05-08 | 159 |
一种图像处理的方法、图像合成的方法以及相关装置 | 2020-05-08 | 51 |
一种图像增强处理方法、装置、设备及存储介质 | 2020-05-11 | 207 |
一种基于异常追踪的视频异常行为检测方法 | 2020-05-08 | 117 |
一种基于多尺度水平集的眼底血管图像分割系统及方法 | 2020-05-11 | 89 |
一种字符分割方法、装置以及计算机可读存储介质 | 2020-05-11 | 674 |
一种面向特制量体衣的椭圆精确识别方法 | 2020-05-11 | 223 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台,是提供专利分析,专利查询,专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据,免费查、免费专利分析。
专利汇分析报告产品可以对行业情报数据进行梳理分析,涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度,系统通过AI智能系统对图表进行解读,只需1分钟,一键生成行业专利分析报告。