Image data processing system with adaptive binary quantization
    1.
    发明授权
    Image data processing system with adaptive binary quantization 失效
    具有自适应二进制数量的图像数据处理系统

    公开(公告)号:US5109436A

    公开(公告)日:1992-04-28

    申请号:US486764

    申请日:1990-03-01

    IPC分类号: G06K9/38 G06T1/00 H04N1/40

    CPC分类号: H04N1/40062

    摘要: An extractor extracts, from image data to be binarized, a feature amount of a target pixel including at least a maximum density difference among pixels in a local region including the target pixel. A predictor predicts an image type of the target pixel in accordance with a minimum density value among the pixels in the local region. A selector selects one of the feature amount of the target pixel from the extractor and a feature amount obtained by adding the feature amount of the target pixel to feature data of neighboring pixels in accordance with the image type predicted by the predictor. A discriminator discriminates the image type of the target pixel in accordance with the feature amount selected by the selector. A weighting section weights the discrimination result from the discriminator with respect to the neighboring pixels of a predetermined range preceding the target pixel in accordance with distances from the target pixel to the neighboring pixels so as to generate feature data of the neighboring pixels selectively used by the selector. A determinator adaptively determines a threshold value for binarizing the image data in accordance with the discrimination result. A binarizing section binarizes the image data in units of target pixels by using the threshold value determined by the determinator.

    Image processing device
    2.
    发明授权
    Image processing device 失效
    图像处理装置

    公开(公告)号:US5001767A

    公开(公告)日:1991-03-19

    申请号:US277605

    申请日:1988-11-29

    IPC分类号: G06T5/00

    摘要: An image processing device capable of processing images containing poorly contrasted letters and/or bold letters in addition to well contrasted letters and pictures such that both resolutions of letters and tones of pictures can be preserved. The device may includes a circuit to distinguish two level images from non two level images according to image concentration related quantity, and a circuit to distinguish picture images out of non two level images according to another image concentration related quantity. The device may include a circuit to distinguish letters from pictures according to the maximum and the minimum values of the image concentration related quantity. The device may includes a circuit to distinguish letters from pictures according to the maximum and the minimum values of changes in the image concentration related quantity. The device may include a circuit to distinguish letters from pictures according to the square sum average of differences in the image concentration related quantity between neighboring picture elements.

    摘要翻译: 一种图像处理装置,其能够处理除对比较好的字母和图片之外的差的对比字母和/或粗体字的图像,使得可以保留图像的字母和色调的两个分辨率。 该装置可以包括根据图像浓度相关量来区分两级图像与非二级图像的电路,以及根据另一图像浓度相关量从非二级图像区分图像图像的电路。 该装置可以包括根据图像浓度相关量的最大值和最小值来区分字母与图像的电路。 该装置可以包括根据图像浓度相关量的变化的最大值和最小值来区分字母与图像的电路。 该装置可以包括根据相邻图像元素之间的图像浓度相关量的差的平方和平均值来区分字母与图像的电路。

    Image binarization apparatus
    3.
    发明授权
    Image binarization apparatus 失效
    图像二值化装置

    公开(公告)号:US4998122A

    公开(公告)日:1991-03-05

    申请号:US407153

    申请日:1989-09-14

    摘要: A feature-analyzing section determines whether a given picture element included in image information supplied from a line buffer represents a character portion or a photograph portion. In accordance with the determination made by the feature-analyzing section, a threshold value selection section selects either a threshold value calculated by a first threshold value calculation section, and to be used in relation to charcter portion, or a threshold value calculated by a second threshold value calculation section, and to be used in relation to photograph portion. By using the threshold value selected by the threshold value selection section, a binary-encoding section binary-encodes image information which is supplied thereto through a delay circuit. On the basis of the determination made by the feature-analyzing section, a determination section determines whether or not the given picture element represents a bold character portion. If the determination section determines that the given picture element represents a bold character portion, a selection section then selects a predetermined value supplied from a value generation section, in place of an output of the binary-encoding section.

    Image processing apparatus for variably magnifying image and controlling
image density
    4.
    发明授权
    Image processing apparatus for variably magnifying image and controlling image density 失效
    用于可变放大图像和控制图像浓度的图像处理装置

    公开(公告)号:US5280546A

    公开(公告)日:1994-01-18

    申请号:US800424

    申请日:1991-11-29

    CPC分类号: G06T3/4007 G06T3/403

    摘要: An image forming apparatus capable of magnifying a target image to any desired magnification, includes functions for detecting the maximum and minimum densities from limited image information, including a data piece representing a picture element of the target image, functions for determining from the difference between the maximum and minimum densities detected by the detection means, whether the picture element is in a photographic region or a character region, functions for determining a picture element density appropriate for magnifying the target image from the density of the target picture element and that of a picture element close to the target picture element, and functions for outputting the picture element density determined by the density-determining means, in accordance with whether the target picture element is in a photographic region or a character region.

    摘要翻译: 一种能够将目标图像放大到任何期望倍率的图像形成装置包括用于从包括表示目标图像的图像元素的数据片的有限图像信息中检测最大和最小密度的功能,用于根据 由检测装置检测的最大和最小密度,无论图像元素是在照相区域还是字符区域中,用于确定适合于从目标像素的浓度和图像的浓度放大目标图像的像素密度 靠近目标像素的元件,以及用于输出由浓度确定装置确定的图像元素浓度的功能,根据目标图像是否在照相区域或字符区域中。

    Gas sensor
    7.
    发明授权
    Gas sensor 失效
    气体传感器

    公开(公告)号:US5837886A

    公开(公告)日:1998-11-17

    申请号:US884507

    申请日:1997-06-27

    CPC分类号: G01N27/12

    摘要: A film heater and thick-film electrode pads are provided on one main surface of a heat-resistant insulating substrate and are connected by through holes to a metal oxide semiconductor film on the tail surface. Pads are made of a gold alloy such as Au--Pt and connected to leads of Pt--W, etc.

    摘要翻译: 在耐热绝缘基板的一个主表面上设置膜加热器和厚膜电极焊盘,并且通过通孔连接到尾表面上的金属氧化物半导体膜。 垫片由金合金如Au-Pt制成,并与Pt-W等引线连接。

    Circuit for controlling access to a common memory based on priority
    8.
    发明授权
    Circuit for controlling access to a common memory based on priority 失效
    基于优先级控制对公用存储器的访问的电路

    公开(公告)号:US5809278A

    公开(公告)日:1998-09-15

    申请号:US363528

    申请日:1994-12-23

    IPC分类号: G06F12/00 G06F13/18

    CPC分类号: G06F13/18

    摘要: An access control apparatus comprises a memory accessed by a plurality of devices, a circuit for giving priority levels to the requests of these devices in access to the memory, a circuit for selecting one from these access requests according to the priority levels, and a control circuit for allowing a device not selected to access the memory in preference to the other ones, after a specified time has elapsed since the access was started. Use of the control circuit assures efficient access for a low-priority access request.

    摘要翻译: 访问控制装置包括由多个设备访问的存储器,用于对这些设备访问存储器的请求给出优先级的电路,用于根据优先级从这些访问请求中选择一个的电路,以及控制 电路,用于允许未被选择的设备优先于其他设备,在访问启动后经过指定的时间后才能访问存储器。 控制电路的使用保证了低优先级访问请求的有效访问。

    Recording apparatus
    10.
    发明授权
    Recording apparatus 失效
    记录装置

    公开(公告)号:US4876560A

    公开(公告)日:1989-10-24

    申请号:US232222

    申请日:1988-08-15

    CPC分类号: G03G15/50 G03G15/01 G03G15/08

    摘要: A recording apparatus according to the present invention in which a data is recorded by charging a driven recording medium, scanning laser beams on the driven recording medium to form electrostatic latent images thereon, and developing and transferring the electrostatic latent image, comprises a charger for charging the driven recording medium; and at least two image forming device disposed around the recording medium for recording multi-colored and/or uni-colored data in a plurality of print modes. In the recording apparatus, the print modes is controlled so as to drive the second image forming device corresponding to the second print mode after the operation of the first print mode is closed, when the second print mode is designated in the operation of the first image forming means corresponding to the first print mode. And, the driver for driving the recording medium is controlled so as to continuously drive the recording medium when the first print mode is switched to the second print mode by the switching device. The image forming device comprises device for forming an electrostatic latent image on the recording medium by scanning laser beams in accordance with the recording data and device for developing the electrostatic latent image.

    摘要翻译: 根据本发明的记录装置,其中通过对驱动记录介质进行充电来记录数据,在驱动记录介质上扫描激光束以在其上形成静电潜像,以及显影和转印静电潜像,包括用于充电的充电器 驱动记录介质; 以及设置在记录介质周围的用于以多种打印模式记录多色和/或单色数据的至少两个图像形成装置。 在记录装置中,在第一打印模式的操作关闭之后,控制打印模式以驱动与第二打印模式对应的第二图像形成装置,当在第一图像的操作中指定第二打印模式时 对应于第一打印模式的形成装置。 并且,通过开关装置将第一打印模式切换为第二打印模式时,控制用于驱动记录介质的驱动器,以便连续地驱动记录介质。 图像形成装置包括:通过根据记录数据扫描激光束和用于显影静电潜像的装置在记录介质上形成静电潜像的装置。