Question

I need to write a script that does the following:

# 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.

So far I’ve gotten:

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

Please help, any ideas, tips, soultions would be greatly appreciated 😀

Answer 1

After a lot of googeling and some trial and error and then even more trial and error I’ve managed to come up with the code below.

Hope this can help someone else.

Code

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