Aliasing是信息号处理领域的一个术语。在计算机图形学中,aliasing是指由于不恰当地使用采样(sampling)造成的各种图像陷(image flaws)和令人不愉快的瑕疵(unpleasant artifacts)。最明显的例子是倾斜的直线或图形边缘会有阶梯状的锯齿(jaggies)。 连续信号(continuous signal)可以通过测量其在等间距样本点(sample points)上...
采样(sampling)就是要将连续信号(continuous signal)离散化成采样信号(sampled signal)。然后采样信号会经过滤波(filtering),被恢复成重构信号(reconstructed signal)。 如果使用一个过低的频率来采样一个信号,就会产生锯齿(aliasing,或混叠),如下图蓝色实线表示原始信号,红色点表示固定频率下的采样点,绿色虚线表示根据这些...
Thedesignof anti-aliasingfilterfortheinputsignalcanimprovetheaccuracyof thesignaltoimprovetheprecisionof thewholesystem. 同时对输入信号进行抗混叠滤波设计以提高输入信号的精确性,从而提高了整个系统的精度。 www.dictall.com 5. Anti-aliasing,alsoknownasgrayscaling,makestheprintpreviewlookbetter. ...
H. Bian. Anti-aliasing nonstationary signals detecion algo- rithm based on interpolation in the frequency domain using the short time Fourier transform. Journal of Systems Engineering and Electronics, 2008, 19(3): 419-426.Bian Hailong , Chen Guangju. Anti2aliasing nonstationary sig...
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Aliasing Reduction in Clipped Signals An aliasing reduction method for hard-clipped samp Valimaki,Vesa,Esqueda,... - 《IEEE Transactions on Signal Processing A Publication of the IEEE Signal Processing Society》 被引量: 15发表: 2016年 Sampling and signal reconstruction structures performing internal a...
aliasing.Thus,thereallyreasonleadsto aliasingistorepresentconsecutivegraphics (analogsignal)usingdiscretepixel(discrete signal2021/3/10ordigitalsignal).2 •Illustratingofaliasing （a）待显示的细小图形 （b）显示结果 Detaildistortion （a）待显示的狭小矩形 （b）显示结果 Narrowgraphicsloss 2021/3/10 3 2021...
•Illustratingofaliasing （a）待显示的细小图形 （b）显示结果 Detaildistortion （a）待显示的狭小矩形 （b）显示结果 Narrowgraphicsloss •Otherexamples:• • •2,NyquistSamplingTheory •Fromdigitalsignalprocessknowledge,weknowthatyouhavetoconverttheanalogsignal(twoorthreedimensional)todigitalsignal--...
Aliasing problem锯齿问题 Before I address temporal supersampling, just a quick reminder on what aliasing is. 在我讲述时间超级采样之前,对锯齿是什么做一个快速的提示。 Aliasing is a problem that is very well defined in signal theory. According to the general sampling theorem we need to have our ...
Define Anti-aliasing. Anti-aliasing synonyms, Anti-aliasing pronunciation, Anti-aliasing translation, English dictionary definition of Anti-aliasing. vb to process so that it has a smooth, rather than a jagged, edge Collins English Dictionary – Complete