POC Converting CR2 to tiff on demand

[kardecom]

We need to explore a possibility on the cluster to create a functionality for authorized users to generate tiff file from original CR2. There is an idea to use ImageMagick invocation via golang app and send an email to the authorized user with the link where it can be downloaded.
This is POC only

[kardecom]

Hi @dshorthouse. When we convert CR2 to tiff with ImageMagick, do we use any -profile? If we do, could you please let me know where I can take a look at it
Thank you

[kardecom]

Adding @cgendreau as well

[dshorthouse]

I checked the Preview001.jpg and the Thumb001.jpg in a folder that also contained a CR2 hoping that these contained a color profile, embedded by cannon when these were created, but do not see any icc profile through Imagick's identify utility. For what it's worth, this is what I get:

Preview001.jpg

Image:
  Filename: Preview001.jpg
  Format: JPEG (Joint Photographic Experts Group JFIF format)
  Mime type: image/jpeg
  Class: DirectClass
  Geometry: 5792x8688+0+0
  Resolution: 72x72
  Print size: 80.4444x120.667
  Units: PixelsPerInch
  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: 50320896
    Red:
      min: 6  (0.0235294)
      max: 255 (1)
      mean: 217.232 (0.851888)
      median: 136 (0.533333)
      standard deviation: 35.7326 (0.140128)
      kurtosis: 10.9287
      skewness: -3.19972
      entropy: 0.673683
    Green:
      min: 0  (0)
      max: 255 (1)
      mean: 198.36 (0.777881)
      median: 103 (0.403922)
      standard deviation: 35.3035 (0.138445)
      kurtosis: 9.49006
      skewness: -3.01482
      entropy: 0.68855
    Blue:
      min: 0  (0)
      max: 255 (1)
      mean: 185.659 (0.728073)
      median: 92 (0.360784)
      standard deviation: 31.7537 (0.124524)
      kurtosis: 9.78797
      skewness: -2.99052
      entropy: 0.708624
  Image statistics:
    Overall:
      min: 0  (0)
      max: 255 (1)
      mean: 200.417 (0.785948)
      median: 110.333 (0.43268)
      standard deviation: 34.2633 (0.134366)
      kurtosis: 7.25301
      skewness: -2.43689
      entropy: 0.690286
  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: 5792x8688+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: JPEG
  Quality: 75
  Orientation: Undefined
  Properties:
    date:create: 2021-03-30T14:21:02+00:00
    date:modify: 2021-02-22T17:26:08+00:00
    jpeg:colorspace: 2
    jpeg:sampling-factor: 2x2,1x1,1x1
    signature: b45b6e50e7b9c8cb5a38b5f7e11d355cf58a4d3a90d94fb700f6000790624d66
  Artifacts:
    verbose: true
  Tainted: False
  Filesize: 1.45232MiB
  Number pixels: 50.3209M
  Pixels per second: 79.6987MP
  User time: 0.630u
  Elapsed time: 0:01.631
  Version: ImageMagick 7.0.11-6 Q16 x86_64 2021-04-03 https://imagemagick.org

Thumb001.jpg

Image:
  Filename: Thumb001.jpg
  Format: JPEG (Joint Photographic Experts Group JFIF format)
  Mime type: image/jpeg
  Class: DirectClass
  Geometry: 173x260+0+0
  Resolution: 72x72
  Print size: 2.40278x3.61111
  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: 44980
    Red:
      min: 10  (0.0392157)
      max: 255 (1)
      mean: 217.163 (0.851621)
      median: 150 (0.588235)
      standard deviation: 34.7129 (0.136129)
      kurtosis: 10.6166
      skewness: -3.12295
      entropy: 0.678108
    Green:
      min: 0  (0)
      max: 253 (0.992157)
      mean: 198.494 (0.778409)
      median: 122 (0.478431)
      standard deviation: 34.421 (0.134984)
      kurtosis: 9.58429
      skewness: -2.98088
      entropy: 0.695312
    Blue:
      min: 6  (0.0235294)
      max: 255 (1)
      mean: 186.072 (0.729696)
      median: 109 (0.427451)
      standard deviation: 30.5488 (0.119799)
      kurtosis: 10.0664
      skewness: -3.01141
      entropy: 0.701939
  Image statistics:
    Overall:
      min: 0  (0)
      max: 255 (1)
      mean: 200.577 (0.786575)
      median: 127 (0.498039)
      standard deviation: 33.2276 (0.130304)
      kurtosis: 7.20687
      skewness: -2.388
      entropy: 0.691786
  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: 173x260+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: JPEG
  Quality: 75
  Orientation: TopLeft
  Profiles:
    Profile-8bim: 40 bytes
    Profile-exif: 86 bytes
    Profile-iptc: 0 bytes
  Properties:
    date:create: 2021-03-30T13:38:07+00:00
    date:modify: 2021-03-30T13:38:05+00:00
    exif:ColorSpace: 1
    exif:ExifOffset: 38
    exif:PixelXDimension: 173
    exif:PixelYDimension: 260
    jpeg:colorspace: 2
    jpeg:sampling-factor: 2x2,1x1,1x1
    signature: 88bb34052e82056eb4b6f64399d66bb52a6b7cb5055f51f6bbd5c4b583be2c12
  Artifacts:
    verbose: true
  Tainted: False
  Filesize: 5237B
  Number pixels: 44980
  Pixels per second: 39.3172MP
  User time: 0.000u
  Elapsed time: 0:01.001
  Version: ImageMagick 7.0.11-6 Q16 x86_64 2021-04-03 https://imagemagick.org

[kardecom]

it's ok if we don't have any.
I just need to know if we have one.
Thank you