point spread

基本解釋

Only blind image restoration algorithms can be used in space solar telescope(SST) image processing when the point-spread function is unknown.
圖像恢復(fù)是太空太陽望遠(yuǎn)鏡（SST）圖像處理的重要組成部分，當(dāng)點(diǎn)擴(kuò)散函數(shù)未知時(shí)只能進(jìn)行盲恢復(fù)。
There exist three sampling methods according to the sampling objects: the transfer function sampling, the point-spread function sampling and the weighting function sampling.
理論分析表明，按照抽樣對象的不同，存在三種適用范圍不同的算法：傳遞函數(shù)抽樣法、點(diǎn)擴(kuò)展函數(shù)抽樣法和加權(quán)函數(shù)抽樣法。
The primary difficulty with blind image restoration is insufficient information. This calls for proper incorporation of apriori knowledge about the image and the point-spread function(PSF).
盲圖像恢復(fù)的主要困難是信息不足，而為了恢復(fù)圖像和確定點(diǎn)擴(kuò)散函數(shù)需要適當(dāng)?shù)南闰?yàn)知識(shí)。

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