以下为句子列表：
英文: Automatic threshold choice is difficult and important to color images edge detection, First of all, on the base of human visual properties, threshold versus intensity function of human visual system are researched and analyzed, by using method of mathemat
中文: 摘要自动阀值选取是彩色图像边缘检测的难点和关键问题，首先从人类的视觉特性出发，分析了人类视觉系统的亮度感知门限函数，利用数学建模方法和色度学方面的研究成果，给出人类视觉系统对彩色图像边缘所能识别的最小彩色差函数。
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英文: 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 ad
中文: 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。
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英文: But a number of studies have recently challenged this democratic assessment of cortical parcellation in the primate visual system by showing that inputs from the fovea are allocated more cortical territory than those containing peripheral information.
中文: 但是近来有几项灵长类视觉系统的研究，对这种以民主方式将皮质分成小块的观点提出了质疑，研究显示，从中央窝输入的讯息，会比周围输入的讯息分配到更多的皮质领地。
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英文: In our visual system it is not only the movements of the eyes and the anatomy of the retina that revolve around the high-resolution fovea; human brains are specialized to process information predominantly from this part of the visual scene.
中文: 我们的视觉系统中，不仅仅是眼睛的运动和视网膜的解剖构造围绕著高解析度的中央窝而打转，大脑也有同样的特化，将大部分力气花在处理视界中央部分的讯息。
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英文: Researchers are looking into many aspects of nystagmus, including possible drug treatments, its epidemiology, impact on visual function, adaptation of the visual system to the constant eye movements, the causes of the condition and its genetic make-up.
中文: 研究者们调查了眼球震颤症的很多方面，包括可能的药物治疗，流行病学，对视觉功能的影响，及视觉系统如何适应眼球的不断运动，该病的病因及遗传学特性等等。
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