使用 python 使用 Photoshop 进行基本的 tiff 处理

Question

我需要编写一个执行以下操作的脚本：

# open a tiff
# get it's dpi, width, height and colorspace
# set the dpi, width, height and colorspace
# and then save the tiff out with no compression and no layers.

到目前为止，我已经得到：

from win32com.client.dynamic import Dispatch
ps = Dispatch( "Photoshop.Application" )

file_path = "C:\\Users\\me\\myImg.tif"
doc = ps.Open( file_path )

dpi     = doc.Resolution
width   = doc.Width             # in cm
height  = doc.Height            # in cm

# up to here the code works, but then I try
doc.Resolution = 72
ps.ResizeImage( 120 , 120 )
ps.PsColorSpaceType( 3 ) # psSRGB

ps.TiffSaveOptions.ImageCompression = 1 # psNoTIFFCompression
ps.TiffSaveOptions.Layers = False
ps.Save()

# and this last section fails

请帮助，任何想法、提示、灵魂将不胜感激：D

Answer 1

经过大量的谷歌搜索和一些试验和错误，然后是更多的试验和错误，我设法想出了下面的代码。

希望这可以帮助别人。

代码

file_path = "C:\\Users\\me\\myImg.tif"
color_settings = "North America General Purpose 2"


from win32com.client.dynamic import Dispatch

ps_app = Dispatch( "Photoshop.Application" )

# set photoshop to use pixels as dimensions
ps_app.Preferences.RulerUnits = 1               # 'for PsUnits --> 1 (psPixels)         
ps_app.Preferences.TypeUnits = 1                # 'for PsTypeUnits --> 1 (psPixels)

doc = ps_app.Open( file_path )                  # Open a file and store open file as doc
dpi     = doc.Resolution
width   = doc.Width         
height  = doc.Height            

cor_res = 1024

ps_app.ChangeColorSettings( color_settings )
doc.ResizeImage( cor_res , cor_res , 72 )


options = Dispatch('Photoshop.TiffSaveOptions')
options.ImageCompression = 1                    # ps_appNoTIFFCompression
options.Layers = False                          # no layers


doc.SaveAs( file_path , options )               # Save with specified options
doc.Close( 2 )                                  # psDoNotSaveChanges