如何在Rails中检索图像的EXIF信息 [英] How to retrieve EXIF information of an image in Rails

问题描述

我正在使用Rails回形针在页面中显示图像.我想知道如何检索图像的EXIF信息(例如尺寸，相机型号，高度，宽度等).有人可以帮我吗?

I am using Rails paperclip for displaying the images in my page. I want to know how to retrieve EXIF information of an image(like dimensions, camera model,height,width., etc).Can any one help me out???

谢谢！！！

推荐答案

您是否尝试了 exifr gem?从文档中

Did you give exifr gem a try? From the documentation

EXIFR::JPEG.new('IMG_6841.JPG').width               # => 2272
EXIFR::JPEG.new('IMG_6841.JPG').height              # => 1704
EXIFR::JPEG.new('IMG_6841.JPG').exif?               # => true
EXIFR::JPEG.new('IMG_6841.JPG').model               # => "Canon PowerShot G3"
EXIFR::JPEG.new('IMG_6841.JPG').date_time           # => Fri Feb 09 16:48:54 +0100 2007
EXIFR::JPEG.new('IMG_6841.JPG').exposure_time.to_s  # => "1/15"
EXIFR::JPEG.new('IMG_6841.JPG').f_number.to_f       # => 2.0

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