Comments (3)
Mm2PL
commented on July 17, 2024
1
This probably happens because we might ignore exif rotation info
$ file 8c5ref.jpeg
8c5ref.jpeg: JPEG image data, JFIF standard 1.01, resolution (DPI), density 300x300, segment length 20, Exif Standard:
[TIFF image data, big-endian, direntries=14, manufacturer=Apple, model=iPhone 12, orientation=upper-right, xresolution=198,
yresolution=206, resolutionunit=2, software=15.1.1, datetime=2022:07:16 00:19:47, hostcomputer=iPhone 12], baseline,
precision 8, 4032x3024, components 3
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leon-richardt
commented on July 17, 2024
1
exiftool 8c5ref.jpeg gives: Orientation: Rotate 90 CW (raw value: 6)
Entire Output
ExifTool Version Number : 12.42
File Name : 8c5ref.jpeg
Directory : .
File Size : 3.2 MB
File Modification Date/Time : 2022:07:16 11:30:58+02:00
File Access Date/Time : 2022:07:16 11:31:07+02:00
File Inode Change Date/Time : 2022:07:16 11:31:01+02:00
File Permissions : -rw-r--r--
File Type : JPEG
File Type Extension : jpg
MIME Type : image/jpeg
JFIF Version : 1.01
Exif Byte Order : Big-endian (Motorola, MM)
Make : Apple
Camera Model Name : iPhone 12
Orientation : Rotate 90 CW
X Resolution : 72
Y Resolution : 72
Resolution Unit : inches
Software : 15.1.1
Modify Date : 2022:07:16 00:19:47
Host Computer : iPhone 12
Tile Width : 512
Tile Length : 512
Y Cb Cr Positioning : Centered
Exposure Time : 1/25
F Number : 1.6
Exposure Program : Program AE
ISO : 1000
Exif Version : 0232
Date/Time Original : 2022:07:16 00:19:47
Create Date : 2022:07:16 00:19:47
Offset Time : +02:00
Offset Time Original : +02:00
Offset Time Digitized : +02:00
Components Configuration : Y, Cb, Cr, -
Shutter Speed Value : 1/25
Aperture Value : 1.6
Brightness Value : -2.229301732
Exposure Compensation : 0
Metering Mode : Multi-segment
Flash : Off, Did not fire
Focal Length : 4.2 mm
Subject Area : 1397 963 291 291
Run Time Flags : Valid
Run Time Value : 944815254757708
Run Time Scale : 1000000000
Run Time Epoch : 0
Acceleration Vector : 0.01231019385 -1.00263679 -0.002108704532
Sub Sec Time Original : 229
Sub Sec Time Digitized : 229
Flashpix Version : 0100
Color Space : Uncalibrated
Exif Image Width : 4032
Exif Image Height : 3024
Sensing Method : One-chip color area
Scene Type : Directly photographed
Exposure Mode : Auto
White Balance : Auto
Focal Length In 35mm Format : 26 mm
Scene Capture Type : Standard
Lens Info : 1.549999952-4.2mm f/1.6-2.4
Lens Make : Apple
Lens Model : iPhone 12 back dual wide camera 4.2mm f/1.6
Composite Image : General Composite Image
GPS Latitude Ref : North
GPS Longitude Ref : East
GPS Altitude Ref : Above Sea Level
GPS Speed Ref : km/h
GPS Speed : 0.2099999934
GPS Img Direction Ref : True North
GPS Img Direction : 34.52927781
GPS Dest Bearing Ref : True North
GPS Dest Bearing : 34.52927781
GPS Horizontal Positioning Error: 6.100446014 m
XMP Toolkit : XMP Core 6.0.0
Creator Tool : 15.1.1
Date Created : 2022:07:16 00:19:47
Region Area Y : 0.31980952380952388, 0.7420000000000001
Region Area W : 0.0754285714285714, 0.071238095238095267
Region Area X : 0.34809523809523807, 0.50314285714285711
Region Area H : 0.10057142857142859, 0.094285714285714306
Region Area Unit : normalized, normalized
Region Type : Face, Face
Region Extensions Angle Info Yaw: 0
Region Extensions Angle Info Roll: 270
Region Extensions Confidence Level: 780
Region Extensions Face ID : 4
Region Applied To Dimensions H : 3168
Region Applied To Dimensions W : 4224
Region Applied To Dimensions Unit: pixel
MPF Version : 0100
Number Of Images : 2
MP Image Flags : (none)
MP Image Format : JPEG
MP Image Type : Undefined
MP Image Length : 292868
MP Image Start : 2895485
Dependent Image 1 Entry Number : 0
Dependent Image 2 Entry Number : 0
Profile CMM Type : Apple Computer Inc.
Profile Version : 4.0.0
Profile Class : Display Device Profile
Color Space Data : RGB
Profile Connection Space : XYZ
Profile Date Time : 2017:07:07 13:22:32
Profile File Signature : acsp
Primary Platform : Apple Computer Inc.
CMM Flags : Not Embedded, Independent
Device Manufacturer : Apple Computer Inc.
Device Model :
Device Attributes : Reflective, Glossy, Positive, Color
Rendering Intent : Perceptual
Connection Space Illuminant : 0.9642 1 0.82491
Profile Creator : Apple Computer Inc.
Profile ID : ca1a9582257f104d389913d5d1ea1582
Profile Description : Display P3
Profile Copyright : Copyright Apple Inc., 2017
Media White Point : 0.95045 1 1.08905
Red Matrix Column : 0.51512 0.2412 -0.00105
Green Matrix Column : 0.29198 0.69225 0.04189
Blue Matrix Column : 0.1571 0.06657 0.78407
Red Tone Reproduction Curve : (Binary data 32 bytes, use -b option to extract)
Chromatic Adaptation : 1.04788 0.02292 -0.0502 0.02959 0.99048 -0.01706 -0.00923 0.01508 0.75168
Blue Tone Reproduction Curve : (Binary data 32 bytes, use -b option to extract)
Green Tone Reproduction Curve : (Binary data 32 bytes, use -b option to extract)
Image Width : 4032
Image Height : 3024
Encoding Process : Baseline DCT, Huffman coding
Bits Per Sample : 8
Color Components : 3
Y Cb Cr Sub Sampling : YCbCr4:2:0 (2 2)
Run Time Since Power Up : 10 days 22:26:55
Aperture : 1.6
Image Size : 4032x3024
Megapixels : 12.2
Scale Factor To 35 mm Equivalent: 6.2
Shutter Speed : 1/25
Create Date : 2022:07:16 00:19:47.229+02:00
Date/Time Original : 2022:07:16 00:19:47.229+02:00
Modify Date : 2022:07:16 00:19:47+02:00
GPS Altitude : 2.1 m Above Sea Level
GPS Latitude : 52 deg 22' 23.48" N
GPS Longitude : 4 deg 53' 58.17" E
MP Image 2 : (Binary data 292868 bytes, use -b option to extract)
Circle Of Confusion : 0.005 mm
Field Of View : 69.4 deg
Focal Length : 4.2 mm (35 mm equivalent: 26.0 mm)
GPS Position : 52 deg 22' 23.48" N, 4 deg 53' 58.17" E
Hyperfocal Distance : 2.27 m
Light Value : 2.7
Lens ID : iPhone 12 back dual wide camera 4.2mm f/1.6
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leon-richardt
commented on July 17, 2024
libvips can correct orientation based on EXIF tags relatively easily: https://pkg.go.dev/github.com/davidbyttow/govips/v2/vips#ImageRef.AutoRotate
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