The noise sources and model in speckle photography fringe pattern is discussed and a noise filter for this model is designed.

本文讨论了散斑摄影条纹图的噪声来源及模型，设计合适的数字滤波器。

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This Fisheye attachment screws onto the filter adapter tube via a 52mm filter thread and works very well with the included 12.5x Macro Lens attachment allowing superior close-up photography.

这到过滤器转接筒鱼螺丝附件过滤器通过一个52毫米螺纹和工作得很顺利，包括12.5 x微距镜头的附件，允许优秀近距离拍摄。

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This heat absorbing filter is used in such areas as photography, colorimetry, contrast enhancement, color conversion and a variety of other scientific and general purposes USES.

吸热滤片用于摄影、比色法、对比增强、颜色转换和各种科学和普通用途。

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