I printed two files one in a tiff format and another in a jpeg format. My question is will there by any difference in Quantity of ink used for both or in other ways will JPEG or Tiff consume more ink ?
ok, i'll bite. The file format themselves have no effect.That which could cause differences:
A) The application used to print the file.
B) The format of the file. A CMYK TIFF or JPEG might print differently than the same image in an RGB TIFF or YCbCr JPEG.
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I am using ImageMagick to convert png files to tiff. But after conversion the file size seems to increase by a huge amount? Any suggestion on what am i doing wrong here?
Command that I am using for conversion is : convert tiftest1.png tiftest2.png output_file.tif
PNG files are analysed (filtered) on a line-by-line basis to see how best each line can be compressed relative to the previous one, then compressed. TIFF files, in general, are not.
You need to consider whether you can accept lossless or lossy compression and then tell the TIFF encoder.
If only lossless compression is acceptable:
magick input1.png input2.png -compress LZW result.tif
If lossy compression is acceptable (and compatible with downstream needs):
magick input1.png input2.png -compress JPEG result.tif
Check actual compression used in a file with:
magick identify -verbose image.tif
Check available types of compression with:
magick identify -list compress
When converting to tiff, ImageMagick produces a non-compressed file by default. You can tell it to use LZW or ZIP or JPEG or other compressions. PNG is always compressed.
I am trying to create a PDF file using Latex. However, Latex does not handle TIFF or any other image format capable of both transparency and CMYK. The only solution I think I can use is to convert the PNG image to PDF and embed those in the file.
I am somewhat familiar with imagemagick, however, I am having trouble figuring out how to convert a PNG (probably in the RGB/SRGB colour space) to a PDF in the CMYK colour space.
How do I go about doing this conversion so that the colours are correct and the transparency remains?
In Imagemagick, you should use a CMYK type profile to do the conversion:
convert input.png -profile USWebCoatedSWOP.icc output.pdf
Note, however, that Imagemagick will simply put the raster image into a vector PDF shell. It will not vectorize the image.
Can I use multiple variations of the below Imagemagick command to achieve the to convert a psd to png, jpg and pdf with rgb and cmyk settings
convert -colorspace rgb/cmyk original.psd convert.png/jpg/pdf
I am a newbie trying to play with file formats and I also want to convert the output files based on RGB and CMYK.
Any help would be greatly appreciated.
Using ImageMagick's convert utility to convert some scanned jpg files to pbm files.
However, even if the option -quality 100 is used, the pbm's resolution still looks worse than the original scanned jpg file.
Worse, the scanned jpg file is a colored one, while the converted pbm is black and white.
Info of original jpg:
image size: 2256 × 1568 pixels
dpi: 300 pixels/inch
color model: RGB
info of the converted pbm:
image size: 2256 × 1568 pixels
dpi: 72 pixels/inch
color model: Gray
Currently, here is what I did to convert the format:
qiang#bonjour:~/scan$ convert scan000.jpg scan000.pbm
Am I missing any option to use with convert? As I mentioned earlier, -quality 100 had been tried, but to no avail.
Using ImageMagick, I think you want to output to PPM not PBM. Try
convert image.jpg image.ppm
or try the ascii version by using
convert image.jpg -compress none image.ppm
PBM is binary (black/white) and PGM is grayscale. If you want to keep color, then you need to use PPM.
Unfortunately, I believe that ImageMagick can only read DJVU format images. So you cannot write to it directly from ImageMagick.
My goal is to create a Tiff image that natively holds uncompressed (or with lossless compression) YCbCr data inside (since the original image is YUV420 and IMO it would be a poor choice to upsample and convert to RGB).
I’m able to create (using imagemagick for instance) a valid YCbCr Tiff with a JPEG compressed data. When I try uncompressed / deflate / lzw I get a broken image (neither windows image viewer nor photoshop can open it). On page 94 of the TIFF 6.0 spec (under “Minimum Requirements for YCbCr Images”):
Compression = none (1), LZW (5) or JPEG (6). SHORT.
What’s wrong? Is there a Tiff extension which says that YCbCr color space is supported only when using jpeg compression?
Thanks,
Mark.
Command that works:
convert infileRGB.tif -colorspace ycbcr -compress jpeg outfileYCbCr.tif
Commands that don't work (broken tiff):
convert infileRGB.tif -colorspace ycbcr -compress none outfileYCbCr.tif
convert infileRGB.tif -colorspace ycbcr -compress lzw outfileYCbCr.tif