「[iPhone app] iFlashReady」的迴響 http://angie.tw/2009/03/27/iphone-app-iflashready/ 生活記錄本_ Fri, 04 May 2012 11:23:23 +0000 hourly 1 http://wordpress.com/ 由：iFlashready developer http://angie.tw/2009/03/27/iphone-app-iflashready/#comment-36026 Mon, 04 May 2009 17:12:59 +0000 http://angie.tw/?p=1918#comment-36026 Hi, the grainy output is caused by Apple/iPhone’s jpeg compression. If you take the photo by iPhone camera, the photo is 1600×1200. However, if you transfer the photo to iPhone by iPhoto, it reduces the size and also compress it aggressively. That compression will introduce artifacts and therefore a local dynamic range algorithm like iFlashready will enhance the artifacts as details.

So, since iFlashready is mainly build for iPhone camera, please either use the 1600×1200 source image, or try to email yourself the 1600×1200 source image, open the email in iPhone, and save it.

If you use iPhoto, and iphone sync, the artifacts from compression can not be avoided. We filed this issue as a bug to Apple before. iPhone OS 2.0 was behaving really bad, iPhone OS 2.2 works slightly better but the bug is still there in iPhoto.

]]> 由：angie http://angie.tw/2009/03/27/iphone-app-iflashready/#comment-35986 Sun, 29 Mar 2009 11:22:05 +0000 http://angie.tw/?p=1918#comment-35986 哀哀相機不能拿來一起比啦

]]> 由：DDT http://angie.tw/2009/03/27/iphone-app-iflashready/#comment-35985 Sat, 28 Mar 2009 18:20:05 +0000 http://angie.tw/?p=1918#comment-35985 這麼爛的東西，還留著幹嘛？
換台高動態範圍的相機卡實在啦。

]]>