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BuKePrinting >> knowledge >> Photoshop中銳化圖像的方法

Photoshop中銳化圖像的方法

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-12-11 | 689 Views | Share:
在瀏覽圖像時,我們不僅能夠看到圖像的顏色和色調,而且還可看到用來定義對象形狀的邊緣。而“銳化”功能可以增強圖像中相鄰像素的對比度,從而在一定程度上使模糊的圖像變清晰,但不能校正嚴重模糊的圖像。

Photoshop中銳化圖像的方法

在瀏覽圖像時,我們不僅能夠看到圖像的顏色和色調,而且還可看到用來定義對象形狀的邊緣。而“銳化”功能可以增強圖像中相鄰像素的對比度,從而在一定程度上使模糊的圖像變清晰,但不能校正嚴重模糊的圖像。

Photoshop主要使用“UsM銳化”濾鏡來銳化圖像。該濾鏡按指定的閾值查找值不同於周圍像素的像素,並按指定的數量增加像素的對比度。因此,對於由閾值指定的相鄰像素,根據指定的數量,較淺的像素變得更亮,較暗的像素變得更暗。也可以指定每個像素相比較的區域半徑。半徑越大,邊緣效果越明顯。要使用USM銳化,選取“濾鏡”→“銳化”→“USM銳化。

Photoshop中銳化圖像的方法
Photoshop中銳化圖像的方法

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