This is my ImageMagick version:
> convert -version
Version: ImageMagick 6.7.1-1 2011-08-16 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC
Features: OpenMP OpenCL
I have an image that has correct Orientation metadata but it is shown as 'Undefined' by ImageMagick but, for example, ExifTool, Pixelmator and Mac OS X Lion show it correctly.
Code: Select all
> identify -verbose test.jpg ruby 1.8.7
Image: test.jpg
Format: JPEG (Joint Photographic Experts Group JFIF format)
Class: DirectClass
Geometry: 2560x1696+0+0
Resolution: 72x72
Print size: 35.5556x23.5556
Units: Undefined
Type: TrueColor
Endianess: Undefined
Colorspace: RGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Red:
min: 18 (0.0705882)
max: 255 (1)
mean: 125.86 (0.493568)
standard deviation: 45.9383 (0.18015)
kurtosis: 0.464146
skewness: 0.750622
Green:
min: 11 (0.0431373)
max: 255 (1)
mean: 92.9317 (0.364438)
standard deviation: 43.1843 (0.16935)
kurtosis: 1.30752
skewness: 1.23358
Blue:
min: 0 (0)
max: 255 (1)
mean: 49.0718 (0.192438)
standard deviation: 38.4827 (0.150912)
kurtosis: 4.90299
skewness: 1.95329
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 89.2878 (0.350148)
standard deviation: 42.6463 (0.16724)
kurtosis: 4.83892
skewness: 1.46382
Rendering intent: Undefined
Interlace: None
Background color: white
Border color: rgb(223,223,223)
Matte color: grey74
Transparent color: black
Compose: Over
Page geometry: 2560x1696+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 95
Orientation: Undefined
Properties:
date:create: 2011-08-16T10:27:23+03:00
date:modify: 2011-08-16T10:27:16+03:00
exif:ExifImageLength: 1696
exif:ExifImageWidth: 2560
exif:ExifOffset: 26
jpeg:colorspace: 2
jpeg:sampling-factor: 2x2,1x1,1x1
signature: d25953dc166a9ef000e83661748dad01787d91fcb61112730f20bc8189e4153a
Profiles:
Profile-exif: 62 bytes
Artifacts:
verbose: true
Tainted: False
Filesize: 1.104MBB
Number pixels: 4.342MB
Pixels per second: 33.4MB
User time: 0.120u
Elapsed time: 0:01.129
Version: ImageMagick 6.7.1-1 2011-08-16 Q16 http://www.imagemagick.org
Then I try to find it using ExifTool:
Code: Select all
ExifTool Version Number : 8.35
File Name : test.jpg
Directory : .
File Size : 1079 kB
File Modification Date/Time : 2011:08:16 10:27:16+03:00
File Permissions : rw-r--r--
File Type : JPEG
MIME Type : image/jpeg
JFIF Version : 1.01
Make : NIKON CORPORATION
Camera Model Name : NIKON D7000
Orientation : Rotate 90 CW
X Resolution : 300
Y Resolution : 300
Resolution Unit : inches
Software : Ver.1.02
Modify Date : 2011:08:10 17:36:57
Artist :
Y Cb Cr Positioning : Co-sited
Copyright :
Exposure Time : 1/60
F Number : 2.8
Exposure Program : Program AE
ISO : 1000
Sensitivity Type : Recommended Exposure Index
Exif Version : 0230
Date/Time Original : 2011:08:10 17:36:57
Create Date : 2011:08:10 17:36:57
Components Configuration : Y, Cb, Cr, -
Compressed Bits Per Pixel : 4
Exposure Compensation : 0
Max Aperture Value : 2.8
Metering Mode : Multi-segment
Light Source : Unknown
Flash : Off, Did not fire
Focal Length : 26.0 mm
Maker Note Version : 2.10
Quality : Fine
White Balance : Auto1
Focus Mode : AF-A
Flash Setting : Normal
Flash Type :
White Balance Fine Tune : 0 0
WB RB Levels : 1.2421875 2.50390625 1 1
Program Shift : 0
Exposure Difference : 0
Compression : JPEG (old-style)
Preview Image Start : 12494
Preview Image Length : 24646
Flash Exposure Compensation : 0
ISO Setting : 200
Image Boundary : 0 0 4928 3264
External Flash Exposure Comp : 0
Flash Exposure Bracket Value : 0.0
Exposure Bracket Value : 0
Crop Hi Speed : Off (4992x3280 cropped to 4992x3280 at pixel 0,0)
Exposure Tuning : 0
Serial Number : 6208151
VR Info Version : 0100
Vibration Reduction : Off
Active D-Lighting : Auto
Picture Control Version : 0100
Picture Control Name : Standard
Picture Control Base : Standard
Picture Control Adjust : Default Settings
Picture Control Quick Adjust : Normal
Brightness : Normal
Hue Adjustment : None
Filter Effect : n/a
Toning Effect : n/a
Toning Saturation : n/a
Timezone : +02:00
Daylight Savings : Yes
Date Display Format : D/M/Y
ISO Expansion : Off
ISO2 : 200
ISO Expansion 2 : Off
Auto Distortion Control : Off
Lens Type : G
Lens : 17-50mm f/2.8
Flash Mode : Did Not Fire
Shooting Mode : Single-Frame, Auto ISO
Shot Info Version : 0220
Firmware Version : 1.02
Noise Reduction : Off
WB RGGB Levels : 318 641 256 247
Lens Data Version : 0204
Exit Pupil Position : 120.5 mm
AF Aperture : 2.8
Focus Position : 0x42
Focus Distance : 3.35 m
Lens ID Number : 0
Lens F Stops : 6.92
Min Focal Length : 17.3 mm
Max Focal Length : 50.4 mm
Max Aperture At Min Focal : 2.8
Max Aperture At Max Focal : 2.8
MCU Version : 0
Effective Max Aperture : 2.8
Retouch History : None
Image Data Size : 9473702
Shutter Count : 134
Flash Info Version : 0104
Vari Program :
Multi Exposure Version : 0100
Multi Exposure Mode : Off
Multi Exposure Shots : 0
Multi Exposure Auto Gain : Off
High ISO Noise Reduction : Normal
Power Up Time : 2011:08:10 17:33:24
AF Info 2 Version : 0100
Contrast Detect AF : Off
AF Area Mode : Auto-area
Phase Detect AF : Unknown (3)
Primary AF Point : Unknown (2)
AF Points Used : Unknown (02 00 00 00 00 00 00)
Contrast Detect AF In Focus : No
File Info Version : 0100
Directory Number : 100
File Number : 0125
AF Fine Tune : Off
AF Fine Tune Index : n/a
AF Fine Tune Adj : 0
User Comment :
Sub Sec Time : 30
Sub Sec Time Original : 30
Sub Sec Time Digitized : 30
Flashpix Version : 0100
Color Space : sRGB
Interoperability Index : R98 - DCF basic file (sRGB)
Interoperability Version : 0100
Sensing Method : One-chip color area
File Source : Digital Camera
Scene Type : Directly photographed
CFA Pattern : [Red,Green][Green,Blue]
Custom Rendered : Normal
Exposure Mode : Auto
Digital Zoom Ratio : 1
Focal Length In 35mm Format : 39 mm
Scene Capture Type : Standard
Gain Control : High gain up
Contrast : Normal
Saturation : Normal
Sharpness : Normal
Subject Distance Range : Unknown
GPS Version ID : 2.3.0.0
Thumbnail Offset : 37298
Thumbnail Length : 8213
Exif Byte Order : Big-endian (Motorola, MM)
Exif Image Width : 2560
Exif Image Height : 1696
Image Width : 2560
Image Height : 1696
Encoding Process : Baseline DCT, Huffman coding
Bits Per Sample : 8
Color Components : 3
Y Cb Cr Sub Sampling : YCbCr4:2:0 (2 2)
Aperture : 2.8
Auto Focus : On
Blue Balance : 0.550725
Image Size : 2560x1696
Lens ID : Tamron SP AF 17-50mm f/2.8 XR Di II LD Aspherical (IF) (A16)
Lens : 17-50mm f/2.8 G
Preview Image : (Binary data 24646 bytes, use -b option to extract)
Red Balance : 0.70903
Scale Factor To 35 mm Equivalent: 1.5
Shutter Speed : 1/60
Create Date : 2011:08:10 17:36:57.30
Date/Time Original : 2011:08:10 17:36:57.30
Modify Date : 2011:08:10 17:36:57.30
Thumbnail Image : (Binary data 8213 bytes, use -b option to extract)
Circle Of Confusion : 0.020 mm
Depth Of Field : 2.00 m (2.63 - 4.63)
Field Of View : 49.2 deg (3.07 m)
Focal Length : 26.0 mm (35 mm equivalent: 39.0 mm)
Hyperfocal Distance : 12.05 m
Light Value : 5.6
Code: Select all
> identify -verbose test.jpg | grep -i orientation
Orientation: Undefined
> exiftool test.jpg | grep -i orientation
Orientation : Rotate 90 CW
This is a quite serious bug, since the image was produced by Google Chrome when it resizes the image before sending it to the server. I can send the image privately if you are willing to take a look at this problem.
Best Regards,
Pekka Mattila
