J'ai une petite dizaine d'images avec l'extension de fichier *.jpe . Tous les autres sont les bien connus *.jpg , *.jpeg et ainsi de suite.
Ces images peuvent-elles être renommées de *.jpe à *.jpg ?
Y a-t-il une différence avec *.jpg ?
Voici un exemple d'un tel fichier :
Pourquoi l'extension de fichier *.jpe ? Est-il arbitraire ?
identify -verbose 02C25DD7-8C81-4CD8-9FE3-1296EC16A024.jpe
Image:
Filename: 02C25DD7-8C81-4CD8-9FE3-1296EC16A024.jpe
Format: JPEG (Joint Photographic Experts Group JFIF format)
Mime type: image/jpeg
Class: DirectClass
Geometry: 768x1024+0+0
Units: Undefined
Colorspace: sRGB
Type: TrueColor
Base type: Undefined
Endianness: Undefined
Depth: 8-bit
Channel depth:
Red: 8-bit
Green: 8-bit
Blue: 8-bit
Channel statistics:
Pixels: 786432
Red:
min: 0 (0)
max: 255 (1)
mean: 156.473 (0.613618)
median: 159 (0.623529)
standard deviation: 43.7249 (0.17147)
kurtosis: 1.09693
skewness: -1.26094
entropy: 0.894501
Green:
min: 0 (0)
max: 255 (1)
mean: 153.452 (0.601772)
median: 158 (0.619608)
standard deviation: 48.5381 (0.190345)
kurtosis: 0.675939
skewness: -1.21666
entropy: 0.903505
Blue:
min: 0 (0)
max: 255 (1)
mean: 147.477 (0.578339)
median: 152 (0.596078)
standard deviation: 49.4681 (0.193993)
kurtosis: 0.165395
skewness: -1.01939
entropy: 0.916593
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 152.467 (0.59791)
median: 156.333 (0.613072)
standard deviation: 47.2437 (0.185269)
kurtosis: 0.62226
skewness: -1.1685
entropy: 0.904867
Rendering intent: Perceptual
Gamma: 0.454545
Chromaticity:
red primary: (0.64,0.33)
green primary: (0.3,0.6)
blue primary: (0.15,0.06)
white point: (0.3127,0.329)
Matte color: grey74
Background color: white
Border color: srgb(223,223,223)
Transparent color: none
Interlace: None
Intensity: Undefined
Compose: Over
Page geometry: 768x1024+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 75
Orientation: Undefined
Properties:
date:create: 2021-12-16T17:11:38+00:00
date:modify: 2003-12-13T11:44:02+00:00
jpeg:colorspace: 2
jpeg:sampling-factor: 2x2,1x1,1x1
signature: 580f2e80052d85bcd9e9c82276fade1d269a99d409ca57bee5b5000f3ab27695
Artifacts:
verbose: true
Tainted: False
Filesize: 164290B
Number pixels: 786432
Pixels per second: 35.9894MP
User time: 0.020u
Elapsed time: 0:01.021
Version: ImageMagick 7.1.0-31 Q16-HDRI x86_64 19966 https://imagemagick.org
