From: Farley Flud <ff@linux.rocks>
Subject: Re: Huge Image! GuhNoo FAILS. Windows for the WIN.
Newsgroups: comp.os.linux.advocacy
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Date: Sun, 23 Feb 2025 11:12:42 +0000
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On Sat, 22 Feb 2025 07:09:05 -0500, -hh wrote:

> 
> The "Huge!" part got me looking at a Kodachrome slide scan I'd done:
> 
> size: 1,208,386,573 bytes (1.21 GB on disk)
> width:  11551
> height: 17433
> unique colors:  {no idea}
> 

Ha, ha, ha, ha, ha!  You actually invoked a bloated FOSS ripoff
just to produce that paltry bit of information?

There are simple tools that can produce much better
info.  Below is the output of ImageMagick's "identify"
command on the huge image that I posted.

That's how the pros do it.


identify -verbose The_Garden_of_Earthly_Delights_by_Bosch_High_Resolution.jpg

Image:
  Filename: The_Garden_of_Earthly_Delights_by_Bosch_High_Resolution.jpg
  Permissions: rw-r--r--
  Format: JPEG (Joint Photographic Experts Group JFIF format)
  Mime type: image/jpeg
  Class: DirectClass
  Geometry: 30000x17078+0+0
  Resolution: 72x72
  Print size: 416.667x237.194
  Units: PixelsPerInch
  Colorspace: sRGB
  Type: TrueColor
  Base type: Undefined
  Endianness: Undefined
  Depth: 8-bit
  Channels: 3.0
  Channel depth:
    Red: 8-bit
    Green: 8-bit
    Blue: 8-bit
  Channel statistics:
    Pixels: 512340000
    Red:
      min: 0  (0)
      max: 255 (1)
      mean: 98.1783 (0.385013)
      median: 103 (0.403922)
      standard deviation: 60.8309 (0.238553)
      kurtosis: -1.07625
      skewness: -0.0550643
      entropy: 0.947631
    Green:
      min: 0  (0)
      max: 255 (1)
      mean: 94.1487 (0.369211)
      median: 97 (0.380392)
      standard deviation: 58.4949 (0.229392)
      kurtosis: -1.04318
      skewness: -0.000257597
      entropy: 0.942807
    Blue:
      min: 0  (0)
      max: 255 (1)
      mean: 62.9299 (0.246784)
      median: 50 (0.196078)
      standard deviation: 54.5112 (0.213769)
      kurtosis: -0.688566
      skewness: 0.660472
      entropy: 0.896163
  Image statistics:
    Overall:
      min: 0  (0)
      max: 255 (1)
      mean: 85.0856 (0.333669)
      median: 83.3333 (0.326797)
      standard deviation: 57.9457 (0.227238)
      kurtosis: -0.935999
      skewness: 0.201717
      entropy: 0.928867
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33,0.03)
    green primary: (0.3,0.6,0.1)
    blue primary: (0.15,0.06,0.79)
    white point: (0.3127,0.329,0.3583)
  Matte color: grey74
  Background color: white
  Border color: srgb(223,223,223)
  Transparent color: black
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 30000x17078+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: JPEG
  Quality: 94
  Orientation: TopLeft
  Profiles:
    Profile-8bim: 9806 bytes
    Profile-exif: 8122 bytes
    Profile-xmp: 3506 bytes
  Properties:
    date:create: 2025-02-21T19:29:59+00:00
    date:modify: 2025-02-21T19:29:59+00:00
    date:timestamp: 2025-02-23T11:04:01+00:00
    exif:BitsPerSample: 8, 8, 8
    exif:ColorSpace: 65535
    exif:Compression: 32946
    exif:DateTime: 2012:11:09 03:25:39
    exif:ExifOffset: 256
    exif:ImageLength: 22279
    exif:ImageWidth: 39136
    exif:PhotometricInterpretation: 2
    exif:PixelXDimension: 30000
    exif:PixelYDimension: 17078
    exif:PlanarConfiguration: 1
    exif:SamplesPerPixel: 3
    exif:Software: Adobe Photoshop CS5.1 Windows
    exif:thumbnail:Compression: 6
    exif:thumbnail:JPEGInterchangeFormat: 394
    exif:thumbnail:JPEGInterchangeFormatLength: 7722
    exif:thumbnail:ResolutionUnit: 2
    exif:thumbnail:XResolution: 72/1
    exif:thumbnail:YResolution: 72/1
    jpeg:colorspace: 2
    jpeg:sampling-factor: 1x1,1x1,1x1
    mime:type: image/jpeg
    signature: 2018a5112ed12658ed4080829e5f46d69393c7cc56dccf17a4f6a99f6c33bb50
  Artifacts:
    verbose: true
  Tainted: False
  Filesize: 222.857MiB
  Number pixels: 512.34M
  Pixel cache type: Memory
  Pixels per second: 90.0144MP
  User time: 5.690u
  Elapsed time: 0:06.691
  Version: ImageMagick 7.1.1-44 Q16-HDRI x86_64 22688 https://imagemagick.org





-- 
Systemd: solving all the problems that you never knew you had.