【摘要】：人類探究世界,絕大部分是依靠了視覺(jué),通過(guò)眼睛識(shí)別物體的亮暗、顏色、形狀、大小、位置等信息。視覺(jué)具有獲取信息速度快、信息量大等特點(diǎn)。如果人的視力出現(xiàn)問(wèn)題,將極大的限制感知周圍的信息和降低生活質(zhì)量。隨著科技的飛速發(fā)展,電子產(chǎn)品越來(lái)越普及,帶來(lái)的視覺(jué)健康問(wèn)題同樣不容忽視。研究人眼的視覺(jué)特性可以為眼科疾病的診斷和治療提供重要依據(jù),同樣也支撐圖像和顯示技術(shù)的發(fā)展。色差和對(duì)比敏感度函數(shù)是研究人眼視覺(jué)特性的兩個(gè)重要指標(biāo)。前者描述的是人眼對(duì)于色彩的分辨能力,是印刷業(yè)、染料業(yè)等行業(yè)的基礎(chǔ),體現(xiàn)著人眼的辨色特性;后者表征的是人眼在不同空間頻率下的對(duì)比度閾值情況,是光學(xué)設(shè)計(jì)、圖像顯示等應(yīng)用的基礎(chǔ),體現(xiàn)著視覺(jué)系統(tǒng)的空間特性。本文設(shè)計(jì)了可以實(shí)現(xiàn)測(cè)量人眼對(duì)比度和色差閾值的復(fù)用裝置。以產(chǎn)生均勻面光源的四積分球結(jié)構(gòu)為主體,在此基礎(chǔ)上確定調(diào)色和調(diào)光方案以及相關(guān)裝置的設(shè)計(jì)。對(duì)于對(duì)比度閾值測(cè)量方面,設(shè)計(jì)了對(duì)比度值可調(diào)的8個(gè)空間頻率的對(duì)比度圖案,并實(shí)施對(duì)比度閾值測(cè)試實(shí)驗(yàn),繪制人眼對(duì)比敏感度曲線,把實(shí)驗(yàn)結(jié)果與臨床使用的對(duì)比敏感度儀的實(shí)驗(yàn)結(jié)果進(jìn)行對(duì)比討論。對(duì)于色差閾值測(cè)量方面,設(shè)計(jì)了顏色和色差值可調(diào)的顏色刺激圖樣,選擇臨床醫(yī)學(xué)上檢測(cè)人眼辨色能力經(jīng)常使用的紅、綠、藍(lán)和黃等4個(gè)顏色,進(jìn)行色差閾值測(cè)試實(shí)驗(yàn),得出人眼不同顏色的色差閾值,并評(píng)價(jià)常用的CIELAB和CIEDE2000色差公式在計(jì)算小色差的性能。本文得出的實(shí)驗(yàn)結(jié)果可以為眼科疾病診斷提供參考。通過(guò)大量的測(cè)試實(shí)驗(yàn),表明搭建的人眼閾值測(cè)量系統(tǒng)滿足對(duì)比度和色差閾值的實(shí)驗(yàn)要求。
[Abstract]:Human beings explore the world mostly by vision, through the eyes to identify the bright and dark objects, color, shape, size, location and other information. Vision has the characteristics of fast access to information, large amount of information. With the increasing popularity of electronic products, visual health problems can not be ignored. The study of human visual characteristics can provide important basis for the diagnosis and treatment of ophthalmic diseases, but also support the development of image and display technology. It is the ability of the human eye to distinguish colors, the basis of printing and dyeing industries, and reflects the color distinguishing characteristics of the human eye; the latter represents the contrast threshold of the human eye at different spatial frequencies, is the basis of optical design, image display and other applications, reflects the spatial characteristics of the visual system. A multi-use device for human eye contrast and chromatic aberration thresholds. The four-integrating-sphere structure for generating uniform surface light source is used as the main body. On this basis, the scheme of color modulation and light modulation and the design of related devices are determined. For the measurement of contrast threshold, eight spatial frequency contrast patterns with adjustable contrast values are designed, and the measurement of contrast threshold is carried out. In the experiment, the contrast sensitivity curves of human eyes were drawn, and the experimental results were compared with those of the contrast sensitivity instrument used in clinic. Color, color difference threshold test experiments are carried out, color difference thresholds of different colors of the human eye are obtained, and the performance of common CIELAB and CEIEDE2000 color difference formulas in calculating small color difference is evaluated. Experimental requirements for specific and chromatic thresholds.
【學(xué)位授予單位】：北京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TP391.41

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本文編號(hào)：2198544