[iOS] 將影像截取為4×6或6×4
iPhone的相機規格性能相當好，以iPhone 6為例，它有800萬畫素，寬高比為3×4或4×3，我們想要讓拍的相片的寬高比變為4×6或6×4，該怎麼做呢？
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Archive for 2015 年 10 月 30 日
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