jnd 中文意思是什麼
jnd
解釋
difference]最小可覺差-
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
對人類視覺系統的特性進行了全面的分析和研究人類視覺系統的特性是任何圖像處理技術必須優先考慮的環節，數字水印技術也不例外，為了使人類視覺系統的特性和數字水印技術很好地結合，本文首先對人類視覺系統理論進行了全面細致的分析和研究，在詳細闡述了人眼的生理結構及人眼對顏色的感知過程的基礎上，建立了人眼的感知模型和人類視覺系統的jnd模型，這些工作為后來水印通道容量的研究、水印嵌入強度的確定等工作奠定了基礎。 -
By utilizing the just noticeable distortion ( jnd ) values, the transparency of the hidden watermark can be guaranteed
演算法中引入了人眼視覺模型，使得演算法有好的視覺隱蔽性。 -
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
用該模型可使指紋特徵信息生成的數字水印自適應嵌入合成的指紋圖像中，提高了指紋認證系統的可信度。 -
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
對系統在三種初始流量、三種管長情況下進行三種閥的關閉實驗和在三種初始流量、三種管長情況下進行管路切換實驗，對這些條下閥調節引起的系統瞬變進行實驗研究。 -
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
嵌入的水印是有意義的二值灰度圖，這樣，不僅可以通過統計來決策待檢測圖像中的水印有無，還可以通過提取出直觀的有意義的水印來加以判斷。
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