摘要：为建立图像颜色差别评价和计算的基础数据,设计了目视评价实验。用5幅典型图像分别改变明度、彩度以及同时改变明度和彩度制作了100对测试图像,通过心理物理实验对测试图像对进行了目视评价实验,对实验数据进行了统计处理,并对实验结果与图像之间的关系进行了初步分析。结果表明:相同条件下主观色差等级随图像色差改变的规律基本一致,各图像的色差感觉都与色差改变量呈对应关系;相同的图像平均色差对于不同内容的图像所引起的主观色差感觉不同,视觉对低彩度图像内容的色差感觉比较敏感;改变图像彩度时,较小和较大平均计算色差与相应的图像视觉色差变化趋势相反;单独改变明度或彩度所产生的视觉色差感觉规律不同,应对明度色差计算的公式进行修正。

摘要：It has been commonly recognized by the academic community that Chinese English learners can be regarded as the trilingual learners in dialects,Mandarin,and then *** the first two acquired languages seem to be unavoidable to result in some effects on the study of English,especially the prosody of *** the same time,the fact that the English prosodic research has been a significant project in the linguistic study with the globalization and localization of English,draws the public’s attention to the further study of the prosody of English for which is of vital importance in English *** on the intonation,stress,tone,pause,and so on,prosody is the fundamental element of speech and the core of English *** Shandong dialect as an example,the study investigates the influence of the dialects on the learning of English prosody from two aspects—intonation and stress,by the acoustic analysis and comparison of the English prosody of linguistic data from Shandong EFL learners and English native speakers based on IViE(Intonational Variation in English)and ToBI(Tone and Breaks Indices)systems using Praat *** addition,the reasons why these effects and problems take place are discussed *** the corresponding measures should be taken in order to help students eliminate the negative impacts of their dialects and deliver standard *** study may have great references on the improvement and elevation of teaching methods on the dialectal regions and some implications on second language acquisition.