DEBIAN SCANIMAGE PDF

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The device is controlled via command-line options. After command-line processing, scanimage normally proceeds to acquire an image. So are --mode Gray and --mode Grayscale in use. Please read the backend documentation first. Parameters are separated by a blank from single-character options e.

A partial list of available devices can be obtained with the --list-devices option see below. If this variable is not set, scanimage will attempt to open the first available device. The --format format option selects how image data is written to standard output. If --format is not used, PNM is written.

The -L or --list-devices option requests a partial list of devices that are available. This is particularly the case when accessing scanners through the network.

If a device is not listed in a configuration file, the only way to access it is by its full device name. You may need to consult your system administrator to find out the names of such devices. The -f or --formatted-device-list option works similar to --list-devices, but requires a format string. Each page is written out to a single file. If this option is not given, the counter will start at 1. If not given, scanimage will continue scanning until the scanner returns a state other than OK.

Not all scanners with document feeders signal when the ADF is empty, use this command to work around them. With --batch-increment increment you can change the amount that the number in the filename is incremented by.

Generally this is used when you are scanning double-sided documents on a single-sided document feeder. A specific command is provided to aid this: --batch-double will automatically set the increment to 2. This can be used for scanning multiple pages without an automatic document feeder. The --accept-md5-only option only accepts user authorization requests that support MD5 security. The SANE network daemon saned is capable of doing such requests.

See saned 8. The -p or --progress option requests that scanimage prints a progress counter. It shows how much image data of the current image has already been received by scanimage in percent. This option can be used to e. The -A or --all-options option requests that scanimage lists all available options exposed the backend, including button options.

The information is printed on standard output and no scan will be done. The -h or --help options request help information. The information is printed on standard output and in this case, no attempt will be made to acquire an image.

The -v or --verbose options increase the verbosity of the operation of scanimage. The option may be specified repeatedly, each time increasing the verbosity level. The -V or --version option requests that scanimage prints the program and package name, the version number of the SANE distribution that it came with and the version of the backend that it loads. If more information about the version numbers of the backends are necessary, the DEBUG variable for the dll backend can be used.

As you might imagine, much of the power of scanimage comes from the fact that it can control any SANE backend. Thus, the exact set of command-line options depends on the capabilities of the selected device. To see the options for a device named dev, invoke scanimage via a command-line of the form: scanimage --help --device-name dev The documentation for the device-specific options printed by --help is best explained with a few examples: -l The description above shows that option -l expects an option value in the range from 0 to mm.

The value in square brackets indicates that the current option value is 0 mm. Most backends provide similar geometry options for top-left y position -t , width -x and height of scan-area -y. The description above shows that option --brightness expects an option value in the range from to percent. The value in square brackets indicates that the current option value is 0 percent. The description above shows that option --default-enhancements has no option value. It should be thought of as having an immediate effect at the point of the command-line at which it appears.

For example, since this option resets the --brightness option, the option-pair --brightness 50 --default-enhancements would effectively be a no-op. The description above shows that option --mode accepts an argument that must be one of the strings Lineart, Gray, or Color. The value in the square bracket indicates that the option is currently set to Gray.

For convenience, it is legal to abbreviate the string values as long as they remain unique. For example, option setting --mode col is identical to --mode Color. The description above shows that option --custom-gamma expects either no option value, a "yes" string, or a "no" string. Specifying the option with no value is equivalent to specifying "yes".

The value in square-brackets indicates that the option is not currently active. That is, attempting to set the option would result in an error message. The set of available options typically depends on the settings of other options. For example, the --custom-gamma table might be active only when a grayscale or color scan-mode has been requested. Note that the --help option is processed only after all other options have been processed.

This makes it possible to see the option settings for a particular mode by specifying the appropriate mode-options along with the --help option. For example, the command-line: scanimage --help --mode color would print the option settings that are in effect when the color-mode is selected. Gamma-correction table. In color mode this option equally affects the red, green, and blue channels simultaneously i.

The description above shows that option --gamma-table expects zero or more values in the range 0 to For example, a legal value for this option would be "3,4,5,6,7,8,9,10,11,12". What this means is that the first vector element is set to 3, the 9-th element is set to 12 and the values in between are interpolated linearly. Of course, it is possible to specify multiple such linear segments. For example, "[0]3-[2]3-[6]7,[7][9]6" is equivalent to "3,3,3,4,5,6,7,10,8,6".

The program gamma4scanimage can be used to generate such gamma tables see gamma4scanimage 1 for details. The description above is an example of an option that takes an arbitrary string value which happens to be a filename.

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The device is controlled via command-line options. After command-line processing, scanimage normally proceeds to acquire an image. So are --mode Gray and --mode Grayscale in use. Please read the backend documentation first. Parameters are separated by a blank from single-character options e.

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Introduction

The Project provides a collection of scanner backends drivers that can communicate with the scanner in order to operate it. Those scanners that SANE directly supports with backends are listed here. The first step on the road to successful scanning is to install libsane , which has the central library for operating scanners. If the scanner is not supported by SANE, the backend and other files will have to be obtained from the Debian archives or the vendor. A notable free backend source requiring this step is the one for the all-in-one machines from HP.

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DEBIAN SCANIMAGE PDF

Mikaran Submit alternative Report as malicious Report as a duplicate. The value in square-brackets indicates that the option is not currently active. If the result is different from what you expected, first make sure your scanner is powered up and properly connected to your computer. An easy function to get a process tree listing very detailed for all the processes of any gived user. Adjust the —resolution and —mode as required if these options are available for your scanner. This is often done by software providing a non-SANE backend.

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