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图片上传网络变模糊?教你三招 - 站长搜索
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图片上传网络变模糊?教你三招

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2015-02-15 10:30:11 转载来源: 网络整理/侵权必删

站长搜索( www.adminso.com):图片上传网络变模糊?教你三招 好多童鞋都有过这样的疑惑,在空间、微博、朋友圈等社交平台上传或下载照片时,为啥总感觉不清晰?尤其是将图片放大之后,连鼻子嘴都分不出,简直惨不忍睹。其实这是一种常见现象,叫做“像素流失”

站长搜索( www.adminso.com):图片上传网络模糊教你三招

好多童鞋都有过这样的疑惑,在空间、微博、朋友圈等社交平台上传或下载照片时,为啥总感觉不清晰?尤其是将图片放大之后,连鼻子嘴都分不出,简直惨不忍睹。

其实这是一种常见现象,叫做“像素流失”。产生的主要原因是网站在处理用户上传图片的时候,为了节省服务器空间和资源,将图片进行了无节操的压缩。

▲一位艺术家就此现象做了一项测试,将一张照片反复上传及下载,出现的结果是这样的。

那么如何使上传的图片保持清晰呢?

第一,不要直接上传单反拍出来的照片。单反相机拍出的照片一般都在10M左右,是最容易被无节操压缩的。

第二,将高清大图裁剪一下再传。将高清大图裁剪一下就可以在可控范围内降低像素,又不至于被过度压缩而导致模糊。

第三,避免上传低像素照片。有的图片本来像素就不高,上传之后被人下载次数多了就更模糊。尤其是在微博上,有些公共账号上传的图片咱们打开都超模糊,就是因为原图就不够清晰。

标签: 图片 上传 网络 模糊 教你 三招


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