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fax2tiff − create a TIFF Class F fax file from raw fax data |
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fax2tiff [ options ] [ −o output.tif ] input.raw |
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Fax2tiff creates a TIFF file containing CCITT Group 3 or Group 4 encoded data from one or more files containing ‘‘raw’’ Group 3 or Group 4 encoded data (typically obtained directly from a fax modem). By default, each row of data in the resultant TIFF file is 1-dimensionally encoded and padded or truncated to 1728 pixels, as needed. The resultant image is a set of low resolution (98 lines/inch) or medium resolution (196 lines/inch) pages, each of which is a single strip of data. The generated file conforms to the TIFF Class F ( FAX ) specification for storing facsimile data. This means, in particular, that each page of the data does not include the trailing return to control ( RTC ) code; as required for transmission by the CCITT Group 3 specifications. The old, ‘‘classic’’, format is created if the −c option is used. (The Class F format can also be requested with the −f option.) The default name of the output image is fax.tif; this can be changed with the −o option. Each input file is assumed to be a separate page of facsimile data from the same document. The order in which input files are specified on the command line is the order in which the resultant pages appear in the output file. |
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Options that affect the interpretation of input data are: |
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−3 |
Assume input data is CCITT Group 3 encoded (default). |
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−4 |
Assume input data is CCITT Group 4 encoded. |
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−U |
Assume input data is uncompressed (Group |