jnd meaning in English
difference]最小可觉差
恰可察觉差
最小可察觉
最小可觉差,辨差阈,轻微差别
Examples
- By utilizing the just noticeable distortion ( jnd ) values , the transparency of the hidden watermark can be guaranteed
算法中引入了人眼视觉模型，使得算法有好的视觉隐蔽性。 - Based on characteristics of human visual system ( hvs ) , including texture / contract masking property and sensitivity of frequency , and combining with wavelet multi - resolution theory , a novel just noticeable difference ( jnd ) model that can embed watermark adaptively is proposed
用该模型可使指纹特征信息生成的数字水印自适应嵌入合成的指纹图像中，提高了指纹认证系统的可信度。 - The jnd values allow us to imperceptibly add a larger - amplitude watermark to the transform coefficients , thus the watermark will be more robust . and the watermark is a visually meaningful binary image , which will greatly facilitate the process of convincing the jury of an ownership claim
嵌入的水印是有意义的二值灰度图，这样，不仅可以通过统计来决策待检测图像中的水印有无，还可以通过提取出直观的有意义的水印来加以判断。 - Experiments were carried with under the conditions that involve three initial rates of flow , three kinds of conduit lengths jnd three sorts of valve , and the transient characteristics brought by valve adjusting were studied . for the first time does there have such an overall transient flow investigation of the whole system under valve adjusting condition
对系统在三种初始流量、三种管长情况下进行三种阀的关闭实验和在三种初始流量、三种管长情况下进行管路切换实验，对这些条下阀调节引起的系统瞬变进行实验研究。 - Makes general analysis and research on human visual system the characteristicness of human visual system is the process being considered firstly for every image process technology , include watermark technology , in order to join the characteristicness of hvs and the watermark technology together , this paper analyses and researches the hvs theoretics particularly firstly . it build the aesthesia models and the jnd models after discussing eyes " biology configuration particularly and expatiating eyes " aesthesia process . these works provide the foundation for the later research of watermark channel capacity and the watetmark embedding intensity . 2
对人类视觉系统的特性进行了全面的分析和研究人类视觉系统的特性是任何图像处理技术必须优先考虑的环节，数字水印技术也不例外，为了使人类视觉系统的特性和数字水印技术很好地结合，本文首先对人类视觉系统理论进行了全面细致的分析和研究，在详细阐述了人眼的生理结构及人眼对颜色的感知过程的基础上，建立了人眼的感知模型和人类视觉系统的jnd模型，这些工作为后来水印信道容量的研究、水印嵌入强度的确定等工作奠定了基础。