Re: Crop command increases file size when cropping iphone jpeg photos

Posted by John Oreopoulos on Dec 11, 2014; 8:02pm
URL: http://imagej.273.s1.nabble.com/Crop-command-increases-file-size-when-cropping-iphone-jpeg-photos-tp5010912p5010914.html

My apologies, the problem is really one of opening an iphone .jpeg in ImageJ. The original file size of the iphone photo is listed as a 3.2 MB .jpeg photo (as seen in my mac finder window as well as mac preview application), but when I open it in ImageJ the file size goes up to something like 30 MB. Again, is this normal behaviour?

John Oreopoulos


On 2014-12-11, at 2:40 PM, John Oreopoulos wrote:

> I have a question about a certain ImageJ behaviour I have observed recently:
>
> When I open a .jpeg image - specifically a photograph acquired with my iphone - when I crop the image to some arbitrary ROI, the file size increases dramatically. For example, if the original image is only 3.2 MB in size, after cropping, it can jump to 13 MB. What is the cause of this behaviour? Is this a bug?
>
> John Oreopoulos
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