Adjusting TIFF format conversion settings
TIFF is one of most popular graphics file formats. It is used in lots of applications
for different purposes. Read this article
to learn more about this format.
Settings of this format can be adjusted with the help of the following boxes.
Color depth equal to - use this dropdown list to select image
color depth.
Compression type – use this dropdown list to select compression
algorithm for resulting images. Note that when you choose a compression type
its compression settings become available.
Multipage option - use this dropdown list to select save mode
for resulting images. Available options: Save as separate pages, Save as
Multipage file, Append to multipage file and Save file "AS IS".
Read this article to learn more about these options.
Additional settings of this format can be adjusted with the help of the following
boxes. They appear on the screen if you click more>> link.
Quantization equal to - use this dropdown list to adjust quantization
value. This option is only available if the value of Color depth equal to
option is 1, 4 or 8 bpp.
Using dithering - use this dropdown list to switch dithering
on/off. This option is only available if the value of Color depth equal to
option is 1, 4 or 8 bpp.
Byte order – use this dropdown list to specify byte order (little
endian or big endian).
Create thumbnail - activate this checkbox to generate thumbnails
of processed images. Thumbnails are used to quickly preview images in browsers
and graphics viewers.
Save TIFF file with – use this dropdown box to split resulting
files into stripes. Initially, standard TIFF file format supports splitting
files into stripes. This option allows reading TIFF by separate stripes, whose
small size ensures successful procession of files on computers with small amount
of RAM. Recommended stripe size should not be larger than 4 kilobytes (Multistrip
option). Singlestrip option allows writing of TIFF file as one
stripe per image. Such files are usually more compact. If you will use your
TIFF files on computers with enough RAM, we recommend that you use Singlestrip
parameter. Enhanced TIFF standard has an option of splitting files into
arbitrary rectangles instead of stripes. This way of splitting is called Tiled.
Note that not all image processing programs support Tiled option.
Jpeg sample - use this dropdown list to specify channels of
image compression. Today most JPEG files have YcbCr format (where Y-channel
stands for brightness while Cb and Cr channels stand for color). Human eye is
built in such a way that it perceives brightness change of neighboring pixels
first and color change next. If we write an average true color image of photo
quality into JPEG format, we can skip every second horizontal value of color
channels and still have an image of nearly same quality. Each two pixels of
the saved image will have two values of Y channel and one value of Cb and Cr
channels. In ImageConverter Plus, this write mode is specified with “sample
4:2:2” parameter. Below is the list of all available Sample values.
1:1:1 - YY CbCb CrCr, YY CbCb CrCr
4:2:2 - YY CbCb CrCr, YY .... ....
4:2:1 - YY CbCb Cr.., YY .... ....
4:4:2 - YY CbCb CrCr, YY CbCb ....
4:1:1 - YY Cb.. Cr.., YY .... .....
This box becomes available if JPEG value is selected in Compression type
list.
Save EXIF - activate this checkbox to copy EXIF (information
on shooting parameters of the digital camera used) to the resulting file, provided
the source file has this information.
Save IPTC - activate this checkbox to copy IPTC (metadata -
name, copyright, category) to the resulting file, provided the source file has
this information.
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