Method of automatically determining imaged body posture in medical image
display
    61.
    发明授权
    Method of automatically determining imaged body posture in medical image display 失效
    在医学图像显示中自动确定成像体姿势的方法

    公开(公告)号:US4951201A

    公开(公告)日:1990-08-21

    申请号:US183809

    申请日:1988-04-20

    IPC分类号: G06T7/00

    摘要: A distribution of an image signal read from a stimulable phosphor sheet and bearing a transmitted radiation image of a human body is determined along a horizontal direction across the image. Signal values of the distribution along the direction are accumulated, and the rate of change of the accumulated values is determined to find the imaged posture of the image. Alternatively, the separation or the average value of the distribution is determined, or the pattern of the distribution is compared with a plurality of reference signal distribution patterns. The derivative of second order of a function approximated by the distribution pattern may be checked for its sign, or the distribution pattern may be checked to determine whether it is of a one-valley form or a two-valley form.

    摘要翻译: 沿着图像的水平方向确定从可刺激的磷光体片读取并承载人体的透射辐射图像的图像信号的分布。 累积沿着方向的分布的信号值,并且确定累积值的变化率以找到图像的成像姿势。 或者,确定分布的分离或平均值,或将分布的图案与多个参考信号分布模式进行比较。 可以检查由分布模式近似的函数的二阶导数的符号,或者可以检查分布模式以确定它是单谷形还是双谷形。

    Battery powered computer system wherein a power supply is selectively
shut off when a low battery power is detected
    62.
    发明授权
    Battery powered computer system wherein a power supply is selectively shut off when a low battery power is detected 失效
    电池供电的计算机系统,其中当检测到低电量电力时,选择性地关闭电源

    公开(公告)号:US4907183A

    公开(公告)日:1990-03-06

    申请号:US172406

    申请日:1988-03-24

    申请人: Nobuyuki Tanaka

    发明人: Nobuyuki Tanaka

    IPC分类号: G06F1/26 G06F1/30

    CPC分类号: G06F1/30

    摘要: A method and related apparatus for extending the battery life in a battery powered computer system having a high power consumption peripheral device, such as a hard disk. The energy state of the power supply battery is determined by a voltage detector. When the battery voltage drops to a level below which continued operation of the computer system will become unreliable or impossible, battery life is extended by de-energizing any high power consumption peripheral devices such as the hard disk, thereby providing an operator with additional time to store data or secure a backup power source. To prevent loss of data as it is being stored on a hard disk, one embodiment of the invention cuts off power to the hard disk only when the hard disk is operating in a standby mode, thereby improving data storage reliability.

    摘要翻译: 一种用于在具有诸如硬盘的高功耗外围设备的电池供电的计算机系统中延长电池寿命的方法和相关装置。 电源电池的能量状态由电压检测器确定。 当电池电压下降到低于该水平时,计算机系统的继续操作将变得不可靠或不可能,通过使任何高功率的外围设备(例如硬盘)断电来延长电池寿命,从而为操作者提供额外的时间 存储数据或保护备用电源。 为了防止数据被存储在硬盘上而丢失,本发明的一个实施例仅在硬盘在待机模式下工作时才切断硬盘的电源,从而提高数据存储的可靠性。

    Image signal compressing method by vector quantization
    63.
    发明授权
    Image signal compressing method by vector quantization 失效
    通过矢量量化的图像信号压缩方法

    公开(公告)号:US4862261A

    公开(公告)日:1989-08-29

    申请号:US160373

    申请日:1988-02-25

    申请人: Nobuyuki Tanaka

    发明人: Nobuyuki Tanaka

    摘要: A method of compressing image signals by vector quantization comprises the steps of dividing two-dimensional image signals into blocks B each comprising the signals at adjacent picture elements, selecting a vector that corresponds with the minimum distortion to differences between the image signals in each block B and a representative value m of signals or interpolation-predicted values for the image signals, and encoding the information representing the selected vector, and the information representing the representative value m or the information utilized for calculating the interpolation-predicted values. The two-dimensional image signals are divided into blocks B' deviated from the blocks B. For each of partial regions of the block B overlapping the blocks B', a representative value n calculated for the block B' including the partial region is used as the representative value m for the partial region. Or, the interpolation-predicted values in the block B are predicted based on the representative values n in all of the blocks B' partially overlapping the block B.

    Method of compressing image signals using vector quantization
    64.
    发明授权
    Method of compressing image signals using vector quantization 失效
    使用矢量量化压缩图像信号的方法

    公开(公告)号:US4853778A

    公开(公告)日:1989-08-01

    申请号:US160377

    申请日:1988-02-25

    申请人: Nobuyuki Tanaka

    发明人: Nobuyuki Tanaka

    CPC分类号: G06T9/008 H04N19/60 H04N19/94

    摘要: A method of compressing image signals comprises the steps of dividing original image signals representing a two-dimensional image into blocks each of which is composed of a plurality of samples, converting the original image signals at respective picture elements in each of the blocks into n-valued system where n denotes an integer of 2 or larger, calculating means values m.sub.1, m.sub.2, . . . , m.sub.n of the original image signals at the respective picture elements in the block that have the common n-valued signals, and encoding the mean values m.sub.1, m.sub.2, . . . , m.sub.n and the n-valued signals. The mean values m.sub.1, m.sub.2, . . . , m.sub.n and/or the n-valued signals in each of the blocks are then subjected to vector quantization.

    摘要翻译: 一种压缩图像信号的方法包括以下步骤:将表示二维图像的原始图像信号划分成由多个样本组成的块,将每个块中各个像素处的原始图像信号转换为n- 其中n表示2或更大的整数,计算单位值m1,m2。 。 。 ,mn的原始图像信号在具有公共n值信号的块中的各个像素处,并且对平均值m1,m2进行编码。 。 。 ,mn和n值信号。 平均值m1,m2,。 。 。 然后对每个块中的mn和/或n值信号进行矢量量化。

    Method of reconstructing image from compression-processed image signals
    65.
    发明授权
    Method of reconstructing image from compression-processed image signals 失效
    从压缩处理图像信号重建图像的方法

    公开(公告)号:US4807029A

    公开(公告)日:1989-02-21

    申请号:US62799

    申请日:1987-06-16

    申请人: Nobuyuki Tanaka

    发明人: Nobuyuki Tanaka

    IPC分类号: H04N7/12

    CPC分类号: H04N19/60

    摘要: In a method of reconstructing an image from compression-processed image signals, the image is reconstructed from transformed image signals obtained by carrying out irreversible compression encoding processing of image signals and then carrying out decoding processing. The irreversible compression encoding processing and the decoding processing of training image signals representing a predetermined training image are carried out to obtain transformed training image signals prior to the image reconstruction. The transformed training image signals are compared with the training image signals, and differences therebetween are calculated at respective picture elements. Noise signals having a signal value distribution in accordance with the distribution of the differences are generated, and the image is reconstructed by randomly adding the noise signals to the transformed image signals.

    摘要翻译: 在从压缩处理图像信号重建图像的方法中,通过对图像信号执行不可逆压缩编码处理而获得的变换图像信号重建图像,然后进行解码处理。 执行表示预定训练图像的训练图像信号的不可逆压缩编码处理和解码处理,以在图像重构之前获得变换的训练图像信号。 将变换的训练图像信号与训练图像信号进行比较,并且在各个像素处计算它们之间的差异。 产生具有根据差异分布的信号值分布的噪声信号,并且通过将噪声信号随机地添加到经变换的图像信号来重建图像。

    Method of compressing and reconstructing image signals by vector
quantization
    66.
    发明授权
    Method of compressing and reconstructing image signals by vector quantization 失效
    通过矢量量化压缩和重建图像信号的方法

    公开(公告)号:US4797739A

    公开(公告)日:1989-01-10

    申请号:US160372

    申请日:1988-02-25

    申请人: Nobuyuki Tanaka

    发明人: Nobuyuki Tanaka

    CPC分类号: H04N19/60 G06T9/008

    摘要: A method of compressing and reconstructing image signals by vector quantization comprises the steps of dividing two-dimensional image signals into blocks each comprising a fixed number of samples, selecting a vector that corresponds with the minimum distortion to the image signals in each block from a code book comprising a plurality of different vectors and prepared by defining the fixed number of vector elements, encoding the information on the selected vector to correspond to each block, and taking the vector elements of the vector, which the encoded information represents, as reconstructed signals of each block. In the case where the reconstructed signal attains a value between image signals "a" and "b" and having a relationship of b-a=.alpha. where .alpha. denotes the minimum level difference corresponding to a density resolution of an image reproducing apparatus, the reconstructed signal is transformed to the image signal "a" or "b" by giving a larger probability weight to the image signal "a" or "b", whichever is closer to the reconstructed signal.

    摘要翻译: 通过矢量量化来压缩和重建图像信号的方法包括以下步骤:将二维图像信号划分成各自包含固定数量样本的块,从代码中选择与每个块中的图像信号对应的最小失真的向量 该书包括多个不同的向量,并且通过定义向量元素的固定数量来编码所选择的向量上的信息以对应于每个块,并且将编码信息表示的向量的矢量元素作为重构信号 每个块。 在重构信号在图像信号“a”和“b”之间达到值并且具有ba =α的关系的情况下,其中α表示与图像再现装置的浓度分辨率对应的最小电平差,重构信号为 通过给图像信号“a”或“b”提供更大的概率权重,以更接近重构信号为准,将其变换为图像信号“a”或“b”。