我有橙色面料的图像，我需要在使用skimage库的程序中使用它。完整文件位于：https://storage.googleapis.com/color-mapping/src-colors/poly/Orange.tif
如果我编写的程序只是读入图像并将其写入，如下所示：
from skimage import io
img = io.imread(path)
io.imsave(outpath, img)
在我的OS X计算机上查看时，出现的图像与原始图像相比显得比较暗淡。
在OS X上，我找到了一个命令，它似乎会以不再出现问题的方式转换图像：
sips -m /System/Library/ColorSync/Profiles/sRGB Profile.icc img.tif --out img-srgb.tif
我正在尝试在Linux云计算机上自动化进程，并且需要等效的命令行（或Python函数）。我试图使用imagemagick转换器，但由于我不能真正理解这个问题，因此我无法弄清楚我想告诉它做什么。
此图像的imagemagick识别输出如下：
Image: scratch/gcs/src-colors/poly/Orange.tif
Format: TIFF (Tagged Image File Format)
Class: DirectClass
Geometry: 5760x3840+0+0
Resolution: 240x240
Print size: 24x16
Units: PixelsPerInch
Type: TrueColor
Base type: TrueColor
Endianess: MSB
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Red:
min: 37 (0.145098)
max: 255 (1)
mean: 161.395 (0.632923)
standard deviation: 31.9903 (0.125452)
kurtosis: 0.330666
skewness: -0.638406
Green:
min: 0 (0)
max: 166 (0.65098)
mean: 56.2109 (0.220435)
standard deviation: 21.8988 (0.0858777)
kurtosis: 0.0542889
skewness: -0.481283
Blue:
min: 0 (0)
max: 126 (0.494118)
mean: 5.63112 (0.0220828)
standard deviation: 11.5607 (0.045336)
kurtosis: 2.85701
skewness: 1.97321
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 74.4125 (0.291814)
standard deviation: 23.3566 (0.0915944)
kurtosis: 139.8
skewness: 13.527
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)
Interlace: None
Background color: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Compose: Over
Page geometry: 5760x3840+0+0
Dispose: Undefined
Iterations: 0
Compression: None
Orientation: TopLeft
Properties:
date:create: 2015-12-02T21:47:33+00:00
date:modify: 2015-12-02T21:47:33+00:00
exif:ApertureValue: 8.91886
exif:CustomRendered: 0
exif:DateTimeDigitized: 2015:09:28 22:50:19
exif:DateTimeOriginal: 2015:09:28 22:50:19
exif:ExposureBiasValue: 0
exif:ExposureMode: 1
exif:ExposureProgram: 1
exif:ExposureTime: 0.005
exif:Flash: 16
exif:FNumber: 22
exif:FocalLength: 70
exif:FocalPlaneResolutionUnit: 3
exif:FocalPlaneXResolution: 1600
exif:FocalPlaneYResolution: 1600
exif:ISOSpeedRatings: 1
exif:MaxApertureValue: 4
exif:MeteringMode: 5
exif:SceneCaptureType: 0
exif:ShutterSpeedValue: 7.64386
exif:SubSecTimeDigitized: 00
exif:WhiteBalance: 1
signature: bff167961ea4eb45101f9afc4761289d29e88f12cb91913b683aade8b80b4424
tiff:endian: lsb
tiff:make: Canon
tiff:model: Canon EOS 5D Mark III
tiff:photometric: RGB
tiff:rows-per-strip: 1
tiff:software: Adobe Photoshop Lightroom 6.1.1 (Macintosh)
tiff:timestamp: 2015:10:29 14:49:50
xmpMM:DerivedFrom:
Profiles:
Profile-8bim: 7774 bytes
Profile-icc: 560 bytes
Description: Adobe RGB (1998)
Manufacturer: Adobe RGB (1998)
Model: Adobe RGB (1998)
Copyright: Copyright 1999 Adobe Systems Incorporated
Profile-iptc: 64 bytes
City[1,90]: 0x00000000: 254700 -%
unknown[2,0]:
Created Date[2,55]: 20150928
Created Time[2,60]: 225019
unknown[2,62]: 20150928
unknown[2,63]: 225019
Profile-xmp: 11810 bytes
Artifacts:
filename: scratch/gcs/src-colors/poly/Orange.tif
verbose: true
Tainted: False
Filesize: 66.38MB
Number pixels: 22.12M
Pixels per second: 32.06MB
User time: 0.180u
Elapsed time: 0:01.690
Version: ImageMagick 6.7.7-10 2014-03-06 Q16 http://www.imagemagick.org
免责声明：我不熟悉颜色配置文件和colorpsaces之类的东西，所以这显然是一个XY问题。请随意为我的潜在问题提出更好的解决方案。
答案 0 :(得分：1)
似乎对我有用的解决方案是将文件/System/Library/ColorSync/Profiles/sRGB Profile.icc从OSX复制到我的linux机器，然后运行：
convert img.tif -profile sRGB\ Profile.icc img-srgb.tif
仍然有兴趣了解有关潜在问题的更多信息以及是否有更好的解决方案。