离散余弦变换是分析图像信号的有效工具。
Discrete Cosines Transform (DCT) is an effective tool for analysis image signal.
在检测水印时无需使用原图像，从而能够有效应用于图像和视频信号的水印处理。
It does not need to use the original image to extract embedded watermark, therefore it is not only suitable for still images but also videos.
多分辨率分析是信号处理特别是图像处理的一种新的有效方法，可以在不同尺度上给出信号的信息。
Multiresolution analysis is an effective approach in signal processing, especially in image processing, to decompose signals in different resolutions.
该文针对图像信号的特点以及DM 642视频接口原理，设计了多DM 642处理系统中视频接口的有效扩展。
According to the features of image signal and the principle of DM642 video port, the paper provides an available video port expansion based on multiprocessor.
计算机仿真超声彩色血流图像，可以为各种超声彩色血流图像处理方法的性能比较提供有效的信号源。
Computer simulated ultrasound color flow images could be used as efficient signal sources for the evaluation of various ultrasound flow image processing methods.
小波框架理论是信号处理的一种有效工具，目前已经广泛应用于小波分析、信号分析、图像处理数值计算等理论和应用领域。
Frame theory is one of efficient tools in the signal processing. At present frame theories have been widely used in wavelet analysis, image processing, numerical analysis, etc.
合成孔径聚焦技术(SAFT)能够对反射信号进行有效聚焦，提高图像分辨力。
Synthetic Aperture Focusing Technique (SAFT) can focus effectively to reflected waves, and improve the reconstructed image's resolution through rough B-scan method.
由于小波变换有效地克服了傅氏变换在处理非平稳的复杂信号时所存在的局限性，因而在图像与信号处理领域受到了广泛的重视。
Due to wavelet transforms efficiently overcoming the limitations of Fourier transform in dealing with unstable and complicated signal, they are popular in image compression and signal processing.
线性化处理技术有效地提高了图像的时间分辨力，使面状缺陷的信号和图像的特征更明显，进而使定位定量更为精确。
Linearization effectively improves time resolution of the received images, which makes the characteristics of the defect more markedly and leads to more accurate quantitative measurement.
实验表明，使用该方法能较好地恢复图像，有效地同步水印检测器与水印信号，从而使水印对仿射变换攻击具有鲁棒性。
The experiment result shows that the synchronization method can synchronize the detector with the watermark perfectly and that the watermark is robust to affine transformation attack.
通过这些处理将运动估计过程中复杂的二维图像运算转化为一维投影信号进行处理，有效的降低了计算负荷。
Those processing translate the 2D image calculation of motion estimation into 1D signal computation to reduce the computational complexity of motion estimation.
下载图像后，会向垃圾电子邮件的发件人发送Web信号通知，告知收件人的电子邮件地址是有效的。
After the images are downloaded, a Web beacon notification is sent to the sender of the junk email that informs the sender that the recipient email address is valid.
对此，该文提出一种以真彩面阵图像传感器3C-CCD作传感器获取图像，对大信号单色响应饱和区进行RGB三色均衡拟合，有效地解决了大信号饱和问题。
In this paper, a color 3C-CCD was used to replace a SSPD or WB-CCD, and the RGB average method was put forward to solve the problem of the saturation.
该平台采用CPLD作为图像数据的采集控制单元，DSP作为核心处理单元。同时对视频信号的预处理电路进行了通用化设计，能够有效保证系统对不同波段的图像信号进行采集和处理。
CPLD is used as image sampling control unit and DSP as the system core, and pretreatment circuit is designed to be multifunctional, all these help to sample different wavelength image signals.
结果显示，各波段图像平均梯度提高了67.1%，细节信号能量提高了65.2%，结果证明了MTF检测方法的有效性。
Experimental results indicate that the average gradient has been improved by 67.1% and the detail-signal energy improved by 65.2%, which proves the effectiveness of the proposed method.
结果显示，各波段图像平均梯度提高了67.1%，细节信号能量提高了65.2%，结果证明了MTF检测方法的有效性。
Experimental results indicate that the average gradient has been improved by 67.1% and the detail-signal energy improved by 65.2%, which proves the effectiveness of the proposed method.
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