In this paper, it is first pointed out that the "ideal" hard clipping prefiltering could not give the optimum vision effect and some kind of "soft" filtering might have better results. Then two novel aliasing reduction methods are proposed, the first one is called as micro-zooming, which ...
Aliasing is an effect that causes different signals to become indistinguishable from each other during sampling. Aliasing is characterized by the altering of output compared to the original signal because resampling or interpolation resulted in a lower resolution in images, a slower frame rate in terms...
Firstly(http://sentencedict.com/aliasing.html), the paper briefly presented the imaging system's aliasing effect as a result of subsampling and the theory of reducing aliasing effect by increasing sampling frequency. This phenomenon is often called aliasing and it's a fundamental way that Java wo...
The aliasing phenomenon is not confined to MRI but is present in all types of technology, explaining audible distortions of sound, moire patterns in photos, and unnatural motion in cinema. The "wagon wheel effect" is a familiar example of aliasing. In this optical illusion, spokes on a wheel...
If every frame per second is precious to you, then you will have to settle for a post-processing AA, which may slightly blur the image, but at least it will eliminate the unpleasant staircase effect. Super-Sampling Anti-Aliasing First off, we have theSSAA(Super-Sampling Anti-Aliasing) or...
highly visible in repetitive patterns such as fabrics. Demosaicing programs (programs that fill in the missing colors in the raw image) use sophisticated algorithms to infer missing detail in each color from detail in the other colors. These algorithms can have a significant effect on color moiré...
The sampling frequency must be at least twice as high as the highest frequency present in the signal to prevent aliasing errors. dataphysics.com 物理信号通过量化产生的一系列数字信号,采样频率必须至少是信号最高频率的两倍。 dataphysics.com [...] feature, Compabitility profiles for Anti-Aliasing...
aliasing occurs because screens are made up of square pixels arranged in a grid. When trying to display a diagonal line or curve, the pixels can only approximate the shape, resulting in a jagged, stair-step appearance. This effect becomes more noticeable at lower resolutions or when viewing th...
wagon wheel effect sampling in time 原因:信号改变太快,采样太慢 解决办法:在采样器前做模糊/滤波操作 模糊+采样>采样+模糊 Why? 只采样会出现artifact? 采样+模糊效果会不好? 频域 sin and cos 通过增大频率,可以改变余弦的形状 傅里叶级数展开
Jaggies – sampling inspace Moire – undersamplingimages Wagon wheel effect – sampling intime [Many more] … 主要原因是因为信号变化太快,而采样太慢。 一种反走样(Antialiasing)的方法是对原图先做模糊处理(滤波),然后再采样。效果可以看下面几个示例 ...