Pink image after extracting pages from multipage tiff

[hade94]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am using the latest version of Magick.NET
• I have searched open and closed issues to ensure it has not already been reported

Description

After updating from 7.21.0 to 7.24.1 tiff files are not converted to jpg with the correct colors. All color pages (True Color, YCBCR) that are exported have a pink tone to it.

Steps to Reproduce

using (MagickImageCollection layers = new MagickImageCollection(memStream))
{
      foreach (var layer in layers)
      {
	      using (var memoryStream = new MemoryStream())
		      {
			     layer.Write(memoryStream, MagickFormat.Jpeg);
      
		      }
	      }
      }

  Format: TIFF (Tagged Image File Format)
  Mime type: image/tiff
  Class: DirectClass
  Geometry: 1984x2777+0+0
  Resolution: 240x240
  Print size: 8.26667x11.5708
  Units: PixelsPerInch
  Type: TrueColor
  Base type: TrueColor
  Endianess: LSB
  Colorspace: sRGB
  Depth: 8-bit
  Channel depth:
    red: 8-bit
    green: 8-bit
    blue: 8-bit
  Channel statistics:
    Pixels: 5509568
    Red:
      min: 0 (0)
      max: 255 (1)
      mean: 232.99 (0.913687)
      standard deviation: 45.5867 (0.178771)
      kurtosis: 7.19807
      skewness: -2.73348
      entropy: 0.47031
    Green:
      min: 0 (0)
      max: 255 (1)
      mean: 233.537 (0.915833)
      standard deviation: 47.0883 (0.18466)
      kurtosis: 7.88032
      skewness: -2.8817
      entropy: 0.459614
    Blue:
      min: 0 (0)
      max: 255 (1)
      mean: 235.167 (0.922225)
      standard deviation: 43.2472 (0.169597)
      kurtosis: 8.2058
      skewness: -2.90587
      entropy: 0.453397
  Image statistics:
    Overall:
      min: 0 (0)
      max: 255 (1)
      mean: 233.898 (0.917248)
      standard deviation: 45.335 (0.177784)
      kurtosis: 7.80675
      skewness: -2.84705
      entropy: 0.461107
  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: 1984x2777+0+0
  Dispose: Undefined
  Iterations: 0
  Scene: 2 of 5
  Compression: JPEG
  Orientation: TopLeft
  Properties:
    date:create: 2021-06-01T23:09:26+02:00
    date:modify: 2019-12-09T03:07:50+01:00
    signature: e0920752af36090512e954b280f241accd193c3da85e178fc1fca6c724f69fa0
    tiff:alpha: unspecified
    tiff:endian: lsb
    tiff:photometric: YCBCR
    tiff:rows-per-strip: 2777
    tiff:software: Kofax standard Multi-Page TIFF Storage Filter v3.03.000
    tiff:subfiletype: PAGE
    tiff:timestamp: 2019:12:09 03:07:50
  Artifacts:
    filename: x.TIF
    verbose: true
  Tainted: False
  Filesize: 1.556MB
  Number pixels: 5.51M
  Pixels per second: 6.638MB
  User time: 1.160u
  Elapsed time: 0:01.829
  Version: ImageMagick 6.9.7-4 Q16 x86_64 20170114 http://www.imagemagick.org

System Configuration

Using the Q8 Any CPU Version of the library inside a mcr.microsoft.com/dotnet/aspnet:5.0 docker base image.

Any ideas guys?

Thanks

[dlemstra]

Can you share the tiff file that csn be used to reproduce this issue?

[hade94]

I will share the file this weekend.

[hade94]

Bastian-multitif-farbe.zip

[dlemstra]

Thanks for providing the file. It turns out that ImageMagick had a check missing when reading this file. I pushed a patch to resolve this and this should be fixed in the next release of Magick.NET.

[mohamedhamza7]

Dear Dirk,

First, thank you so much for your efforts for develop and maintain this library.

I also have the same issue after turn from version Q8-x86.7.14.4.0 to Q16-x86.7.24.1, and i do the upgrade because i noticed that the size of TIFF files (with JPEG compression) increased after add some text on the first page of the file and for testing purpose I just read and write the file with the below code,

` using (var src = new MagickImageCollection(srcFilePath))
{
using (var des = new MagickImageCollection())
{
foreach (var page in src)
{
page.Settings.Format = page.Format;
page.Settings.Compression = page.Compression;

                    des.Add(page);

                }
                des.Write(desFilePath);
            }
        }`

Kindly is there is a way to keep the file size the same?

TIFFFiles.zip

[dlemstra]

I don't think you can keep the same size but also setting the colorspace of the image to YCbCr seems to reduce the size of the file: image.ColorSpace = ColorSpace.YCbCr;.

[dlemstra]

Can you test this again with the latest release @mohamedhamza7, and close this issue when the pink colors are gone?

[hade94]

@dlemstra Sorry for my late response, i've tested this and it works fine. Issue resolved. Thanks!