check detail of image ( exiftool , identify, file )

exiftool  

 

$ sudo apt install libimage-exiftool-perl

 

 

https://superuser.com/questions/275502/how-to-get-information-about-an-image-picture-from-the-linux-command-line

 

$ sudo apt-get install imagemagick

$ identify -verbose Images/image_237.jpg
Image: Images/image_237.jpg
Format: JPEG (Joint Photographic Experts Group JFIF format)
Mime type: image/jpeg
Class: DirectClass
Geometry: 3840x2160+0+0
Units: Undefined
Type: TrueColor
Endianess: Undefined
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Pixels: 8294400
Red:
min: 0 (0)
max: 255 (1)
mean: 93.8941 (0.368212)
standard deviation: 58.6186 (0.229877)
kurtosis: -1.81952
skewness: -0.0201898
entropy: 0.825157
Green:
min: 0 (0)
max: 229 (0.898039)
mean: 94.3259 (0.369905)
standard deviation: 63.6714 (0.249692)
kurtosis: -1.86161
skewness: 0.0181786
entropy: 0.829881
Blue:
min: 0 (0)
max: 233 (0.913725)
mean: 94.2206 (0.369493)
standard deviation: 66.977 (0.262655)
kurtosis: -1.86748
skewness: 0.0171323
entropy: 0.829264
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 94.1469 (0.369203)
standard deviation: 63.1826 (0.247775)
kurtosis: -1.84019
skewness: 0.00837507
entropy: 0.828101
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)
Background color: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Interlace: None
Intensity: Undefined
Compose: Over
Page geometry: 3840x2160+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 95
Orientation: Undefined
Properties:
date:create: 2021-09-07T14:25:20+08:00
date:modify: 2020-09-11T07:28:28+08:00
jpeg:colorspace: 2
jpeg:sampling-factor: 2x2,1x1,1x1
signature: 8b9b1c1c092cb5ea727ee0b2843d1247c1f33f3593af768cc3741083436a5994
Artifacts:
filename: Images/image_237.jpg
verbose: true
Tainted: False
Filesize: 1.938MB
Number pixels: 8.294M
Pixels per second: 55.3MB
User time: 0.150u
Elapsed time: 0:01.149
Version: ImageMagick 6.9.7-4 Q16 x86_64 20170114 http://www.imagemagick.org