CZIcmd Documentation
The console application "CZIcmd" is provided for two purposes:
- demonstrate the usage of the libCZI
- it might be useful to convert/extract data from a CZI-file
The synopsis of the program is:
Usage: CZIcmd.exe [OPTIONS]
using libCZI version 0.57.0
Options:
-h,--help Print this help message and exit
-c,--command COMMAND
COMMAND can be one of 'PrintInformation', 'ExtractSubBlock',
'SingleChannelTileAccessor', 'ChannelComposite',
'SingleChannelPyramidTileAccessor',
'SingleChannelScalingTileAccessor',
'ScalingChannelComposite', 'ExtractAttachment' and
'CreateCZI'.
'PrintInformation' will print information about the CZI-file
to the console. The argument 'info-level' can be used to
specify which information is to be printed.
'ExtractSubBlock' will write the bitmap contained in the
specified sub-block to the OUTPUTFILE.
'ChannelComposite' will create a channel-composite of the
specified region and plane and apply display-settings to it.
The resulting bitmap will be written to the specified
OUTPUTFILE.
'SingleChannelTileAccessor' will create a tile-composite
(only from sub-blocks on pyramid-layer 0) of the specified
region and plane. The resulting bitmap will be written to
the specified OUTPUTFILE.
'SingleChannelPyramidTileAccessor' adds to the previous
command the ability to explicitly address a specific
pyramid-layer (which must exist in the CZI-document).
'SingleChannelScalingTileAccessor' gets the specified region
with an arbitrary zoom factor. It uses the pyramid-layers in
the CZI-document and scales the bitmap if necessary. The
resulting bitmap will be written to the specified
OUTPUTFILE.
'ScalingChannelComposite' operates like the previous
command, but in addition gets all channels and creates a
multi-channel-composite from them using display-settings.
'ExtractAttachment' allows to extract (and save to a file)
the contents of attachments.)
'CreateCZI' is used to demonstrate the CZI-creation
capabilities of libCZI.)
'PlaneScan' does the following: over a ROI given with the
--rect option a rectangle of size given with the
--tilesize-for-plane-scan option is moved, and the image
content of this rectangle is written out to files. The
operation takes place on a plane which is given with the
--plane-coordinate option. The filenames of the tile-bitmaps
are generated from the filename given with the --output
option, where a string
_X[x-position]_Y[y-position]_W[width]_H[height] is added.
-s,--source SOURCEFILE
Specifies the source CZI-file.
--source-stream-class STREAMCLASS
Specifies the stream-class used for reading the source
CZI-file. If not specified, the default file-reader
stream-class is used. Run with argument '--version' to get a
list of available stream-classes.
--propbag-source-stream-creation PROPBAG
Specifies the property-bag used for creating the stream used
for reading the source CZI-file. The data is given in
JSON-notation.
-o,--output OUTPUTFILE
specifies the output-filename. A suffix will be appended to
the name given here depending on the type of the file.
-p,--plane-coordinate PLANE-COORDINATE
Uniquely select a 2D-plane from the document. It is given in
the form [DimChar][number], where 'DimChar' specifies a
dimension and can be any of 'Z', 'C', 'T', 'R', 'I', 'H',
'V' or 'B'. 'number' is an integer.
Examples: C1T3, C0T-2, C1T44Z15H1.
-r,--rect ROI Select a paraxial rectangular region as the
region-of-interest. The coordinates may be given either
absolute or relative. If using relative coordinates, they
are relative to what is determined as the upper-left point
in the document.\nRelative coordinates are specified with
the syntax 'rel([x],[y],[width],[height])', absolute
coordinates are specified 'abs([x],[y],[width],[height])'.
Examples: rel(0, 0, 1024, 1024), rel(-100, -100, 500, 500),
abs(-230, 100, 800, 800).
-d,--display-settings DISPLAYSETTINGS
Specifies the display-settings used for creating a
channel-composite. The data is given in JSON-notation.
--calc-hash Calculate a hash of the output-picture. The MD5Sum-algorithm
is used for this.
-t,--drawtileboundaries
Draw a one-pixel black line around each tile.
-j,--jpgxrcodec DECODERNAME
Choose which decoder implementation is used. Specifying
"WIC" will request the Windows-provided decoder - which is
only available on Windows.By default the internal
JPG-XR-decoder is used.
-v,--verbosity VERBOSITYLEVEL
Set the verbosity of this program. The argument is a comma-
or semicolon-separated list of the following strings :
'All', 'Errors', 'Warnings', 'Infos', 'Errors1',
'Warnings1', 'Infos1', 'Errors2', 'Warnings2', 'Infos2'.
-b,--background BACKGROUND
Specify the background color. BACKGROUND is either a single
float or three floats, separated by a comma or semicolon. In
case of a single float, it gives a grayscale value, in case
of three floats it gives a RGB - value.The floats are given
normalized to a range from 0 to 1.
-y,--pyramidinfo PYRAMIDINFO
For the command 'SingleChannelPyramidTileAccessor' the
argument PYRAMIDINFO specifies the pyramid layer. It
consists of two integers(separated by a comma, semicolon or
pipe-symbol), where the first specifies the
minification-factor (between pyramid-layers) and the second
the pyramid-layer (starting with 0 for the layer with the
highest resolution).
-z,--zoom ZOOM The zoom-factor (which is used for the commands
'SingleChannelScalingTileAccessor' and
'ScalingChannelComposite'). It is a float between 0 and 1.
-i,--info-level INFO-LEVEL
When using the command 'PrintInformation' the INFO-LEVEL can
be used to specify which information is printed. Possible
values are "Statistics", "RawXML", "DisplaySettings",
"DisplaySettingsJson", "AllSubBlocks", "Attachments",
"AllAttachments", "PyramidStatistics", "GeneralInfo",
"ScalingInfo" and "All". The values are given as a list
separated by comma or semicolon.
-e,--selection SELECTION
For the command 'ExtractAttachment' this allows to specify a
subset which is to be extracted (and saved to a file). It is
possible to specify the name and the index - only
attachments for which the name/index is equal to those
values specified are processed. The arguments are given in
JSON-notation, e.g. {"name":"Thumbnail"} or {"index":3.0}.
-f,--tile-filter FILTER
Specify to filter subblocks according to the scene-index. A
comma separated list of either an interval or a single
integer may be given here, e.g. "2,3" or "2-4,6" or
"0-3,5-8".
-m,--channelcompositionformat CHANNELCOMPOSITIONFORMAT
In case of a channel-composition, specifies the pixeltype of
the output. Possible values are "bgr24" (the default) and
"bgra32". If specifying "bgra32" it is possible to give the
value of the alpha-pixels in the form "bgra32(128)" - for an
alpha-value of 128.
--createbounds BOUNDS
Only used for 'CreateCZI': specify the range of coordinates
used to create a CZI. Format is e.g. 'T0:3Z0:3C0:2'.
--createsubblocksize SIZE
Only used for 'CreateCZI': specify the size of the subblocks
created in pixels. Format is e.g. '1600x1200'.
--createtileinfo TILEINFO
Only used for 'CreateCZI': specify the number of tiles on
each plane. Format is e.g. '3x3;10%' for a 3 by 3 tiles
arrangement with 10% overlap.
--font NAME/FILENAME
Only used for 'CreateCZI': (on Linux) specify the filename
of a TrueType-font (.ttf) to be used for generating text in
the subblocks; (on Windows) name of the font.
--fontheight HEIGHT
Only used for 'CreateCZI': specifies the height of the font
in pixels (default: 36).
-g,--guidofczi CZI-File-GUID
Only used for 'CreateCZI': specify the GUID of the file
(which is useful for bit-exact reproducible results); the
GUID must be given in the form
"cfc4a2fe-f968-4ef8-b685-e73d1b77271a" or
"{cfc4a2fe-f968-4ef8-b685-e73d1b77271a}"
--bitmapgenerator BITMAPGENERATORCLASSNAME
Only used for 'CreateCZI': specifies the bitmap-generator to
use. Possibly values are "gdi", "freetype", "null" or
"default". Run with argument '--version' to get a list of
available bitmap-generators.
--createczisbblkmetadata KEY_VALUE_SUBBLOCKMETADATA
Only used for 'CreateCZI': a key-value list in JSON-notation
which will be written as subblock-metadata. For example:
{"StageXPosition":-8906.346,"StageYPosition":-648.51}
--compressionopts COMPRESSIONDESCRIPTION
Only used for 'CreateCZI': a string in a defined format
which states the compression-method and (compression-method
specific) parameters.The format is "compression_method:
key=value; ...". It starts with the name of the
compression-method, followed by a colon, then followed by a
list of key-value pairs which are separated by a semicolon.
Examples: "zstd0:ExplicitLevel=3",
"zstd1:ExplicitLevel=2;PreProcess=HiLoByteUnpack".
--generatorpixeltype PIXELTYPE
Only used for 'CreateCZI': a string defining the pixeltype
used by the bitmap - generator. Possible values are 'Gray8',
'Gray16', 'Bgr24' or 'Bgr48'. Default is 'Bgr24'.
--cachesize CACHESIZE
Only used for 'PlaneScan' - specify the size of the
subblock-cache in bytes. The argument is to be given with a
suffix k, M, G, ...
--tilesize-for-plane-scan TILESIZE
Only used for 'PlaneScan' - specify the size of ROI which is
used for scanning the plane in units of pixels. Format is
e.g. '1600x1200' and default is 512x512.
--use-visibility-check-optimization
Whether to enable the experimental "visibility check
optimization" for the accessors.
--version Print extended version-info and supported operations, then
exit.
The above text is printed if the program is executed with the argument '-?' or '--help':
CZIcmd --help
The program expects the argument '-c' or '--command' in order to select between different operations. The command choosen then determines which other arguments have to be given for proper operation or are meaningful.
command 'PrintInformation'
If the command 'PrintInformation' is specified, the program expects a source CZI-file to present (specified with '-s' or '--source'). It will then print out some information about the content of the CZI-file on stdout - as shown here:
>CZIcmd.exe --command PrintInformation --source D:\PICTURES\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi SubBlock-Statistics ------------------- SubBlock - Count: 122720 Bounding-Box: X=0 Y=0 W=139756 H=103036 M-Index: min=0 max=140 Bounds: C -> Start=0 Size=4 T -> Start=0 Size=1 S -> Start=0 Size=22 B -> Start=0 Size=1 Bounding-Box for scenes: Scene0 : X=23894 Y=1840 W=22240 H=18592 Scene1 : X=2 Y=0 W=22240 H=24096 Scene2 : X=47755 Y=3676 W=18592 H=18592 Scene3 : X=71630 Y=3676 W=24096 H=22240 Scene4 : X=97334 Y=5512 W=22240 H=20416 Scene5 : X=22058 Y=25708 W=24096 H=20416 Scene6 : X=13 Y=27544 W=20416 H=20416 Scene7 : X=66122 Y=27544 W=25920 H=22240 Scene8 : X=47762 Y=33052 W=16736 H=14912 Scene9 : X=93662 Y=29380 W=25920 H=22240 Scene10 : X=119361 Y=31216 W=20416 H=20416 Scene11 : X=22058 Y=49576 W=22240 H=24096 Scene12 : X=0 Y=51412 W=20416 H=22241 Scene13 : X=45922 Y=51412 W=24096 H=24096 Scene14 : X=67958 Y=51412 W=24096 H=25920 Scene15 : X=91808 Y=53248 W=25945 H=22240 Scene16 : X=117524 Y=55084 W=20416 H=25920 Scene17 : X=26 Y=75280 W=20416 H=20420 Scene18 : X=22058 Y=75280 W=24096 H=24096 Scene19 : X=45926 Y=77116 W=22240 H=20416 Scene20 : X=67958 Y=77116 W=20416 H=22240 Scene21 : X=89976 Y=78952 W=24096 H=22240 Scene22 : X=115693 Y=82624 W=20416 H=20416
The argument '-i' or '--info-level' is used to choose between different types of output (where only "Statistics" is default). So we get additional information about the display-settings by running this command:
>CZIcmd.exe --command PrintInformation --info-level Statistics,DisplaySettings --source D:\PICTURES\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi SubBlock-Statistics ------------------- SubBlock - Count: 122720 Bounding-Box: X=0 Y=0 W=139756 H=103036 M-Index: min=0 max=140 Bounds: C -> Start=0 Size=5 T -> Start=0 Size=1 S -> Start=0 Size=23 B -> Start=0 Size=1 Bounding-Box for scenes: Scene0 : X=23894 Y=1840 W=22240 H=18592 Scene1 : X=2 Y=0 W=22240 H=24096 Scene2 : X=47755 Y=3676 W=18592 H=18592 Scene3 : X=71630 Y=3676 W=24096 H=22240 Scene4 : X=97334 Y=5512 W=22240 H=20416 Scene5 : X=22058 Y=25708 W=24096 H=20416 Scene6 : X=13 Y=27544 W=20416 H=20416 Scene7 : X=66122 Y=27544 W=25920 H=22240 Scene8 : X=47762 Y=33052 W=16736 H=14912 Scene9 : X=93662 Y=29380 W=25920 H=22240 Scene10 : X=119361 Y=31216 W=20416 H=20416 Scene11 : X=22058 Y=49576 W=22240 H=24096 Scene12 : X=0 Y=51412 W=20416 H=22241 Scene13 : X=45922 Y=51412 W=24096 H=24096 Scene14 : X=67958 Y=51412 W=24096 H=25920 Scene15 : X=91808 Y=53248 W=25945 H=22240 Scene16 : X=117524 Y=55084 W=20416 H=25920 Scene17 : X=26 Y=75280 W=20416 H=20420 Scene18 : X=22058 Y=75280 W=24096 H=24096 Scene19 : X=45926 Y=77116 W=22240 H=20416 Scene20 : X=67958 Y=77116 W=20416 H=22240 Scene21 : X=89976 Y=78952 W=24096 H=22240 Scene22 : X=115693 Y=82624 W=20416 H=20416 Display-Settings ---------------- Channel #0 ========== Enabled: yes Tinting: yes (R=0, G=0, B=255) Black-point: 7.82071e-05 White-point: 0.0180172 Gradation-curve-mode: linear Channel #1 ========== Enabled: yes Tinting: yes (R=255, G=0, B=0) Black-point: 0 White-point: 0.812503 Gradation-curve-mode: linear Channel #2 ========== Enabled: yes Tinting: yes (R=0, G=255, B=0) Black-point: 7.99274e-05 White-point: 0.570345 Gradation-curve-mode: linear Channel #3 ========== Enabled: yes Tinting: yes (R=255, G=255, B=0) Black-point: 7.99212e-05 White-point: 0.700039 Gradation-curve-mode: linear Channel #4 ========== Enabled: yes Tinting: yes (R=0, G=255, B=255) Black-point: 7.97113e-05 White-point: 0.220098 Gradation-curve-mode: linear
The info-level 'PyramidStatistics' is used to print out information about the number of subblocks in the various pyramid-layers:
>CZIcmd.exe --info-level PyramidStatistics --command PrintInformation --source D:\PICTURES\NaCZIrTestData\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi Pyramid-Subblock-Statistics --------------------------- scene#0: number of subblocks with scale 1/32: 5 number of subblocks with scale 1/16: 20 number of subblocks with scale 1/8: 45 number of subblocks with scale 1/4: 140 number of subblocks with scale 1/2: 505 number of subblocks with scale 1/1: 485 scene#1: number of subblocks with scale 1/32: 5 number of subblocks with scale 1/16: 20 number of subblocks with scale 1/8: 45 number of subblocks with scale 1/4: 165 number of subblocks with scale 1/2: 600 number of subblocks with scale 1/1: 630 scene#2: number of subblocks with scale 1/32: 5 number of subblocks with scale 1/16: 15 number of subblocks with scale 1/8: 40 number of subblocks with scale 1/4: 120 number of subblocks with scale 1/2: 415 number of subblocks with scale 1/1: 355 scene#3: number of subblocks with scale 1/32: 5 number of subblocks with scale 1/16: 20 number of subblocks with scale 1/8: 45 number of subblocks with scale 1/4: 160 number of subblocks with scale 1/2: 595 number of subblocks with scale 1/1: 640 scene#4: number of subblocks with scale 1/32: 5 number of subblocks with scale 1/16: 20 number of subblocks with scale 1/8: 45 number of subblocks with scale 1/4: 140 number of subblocks with scale 1/2: 525 number of subblocks with scale 1/1: 540 scene#5: number of subblocks with scale 1/32: 5 number of subblocks with scale 1/16: 20 number of subblocks with scale 1/8: 45 ...
If 'RawXML' is specified as argument for '-i' or '--info-level', the complete metadata is written to stdout as XML.
'DisplaySettingsJson' will output the display-settings in JSON-notation as it is used in CZICmd.
>CZIcmd.exe --info-level DisplaySettingsJson --command PrintInformation --source D:\PICTURES\NaCZIrTestData\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi
Display-Settings in CZIcmd-JSON-Format
--------------------------------------
Pretty-Print:
{
"channels": [
{
"ch": 0,
"black-point": 0.00007820712198736146,
"white-point": 0.01801724173128605,
"tinting": "#0000ff"
},
{
"ch": 1,
"black-point": 0.0,
"white-point": 0.8125027418136597,
"tinting": "#ff0000"
},
{
"ch": 2,
"black-point": 0.00007992737664608285,
"white-point": 0.570344865322113,
"tinting": "#00ff00"
},
{
"ch": 3,
"black-point": 0.00007992124301381409,
"white-point": 0.7000391483306885,
"tinting": "#ffff00"
},
{
"ch": 4,
"black-point": 0.00007971125887706876,
"white-point": 0.2200983464717865,
"tinting": "#00ffff"
}
]
}
Compact:
{"channels":[{"ch":0,"black-point":0.00007820712198736146,"white-point":0.018017
24173128605,"tinting":"#0000ff"},{"ch":1,"black-point":0.0,"white-point":0.81250
27418136597,"tinting":"#ff0000"},{"ch":2,"black-point":0.00007992737664608285,"w
hite-point":0.570344865322113,"tinting":"#00ff00"},{"ch":3,"black-point":0.00007
992124301381409,"white-point":0.7000391483306885,"tinting":"#ffff00"},{"ch":4,"b
lack-point":0.00007971125887706876,"white-point":0.2200983464717865,"tinting":"#
00ffff"}]}
'Attachments' and 'AllAttachments' are used to get information about the attachments contained in the CZI-file:
>CZIcmd.exe --info-level Attachments --command PrintInformation --source D:\PICTURES\NaCZIrTestData\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi
Attachment Info
---------------
count | name
------+----------------------------
1 | EventList
1 | Label
1 | SlidePreview
1 | Thumbnail
1 | TimeStamps
In this case we get a list of the attachments present in the file, aggregated by their name (and how many times an attachment with a specific name is present).
>CZIcmd.exe --info-level AllAttachments --command PrintInformation --source D:\PICTURES\NaCZIrTestData\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi
Complete list of Attachments
----------------------------
index | filetype | GUID | name
------+----------+----------------------------------------+-------------
0 | CZTIMS | {D2FD4125-CBF0-4B27-A8F2-643EDC5BAE7B} | TimeStamps
1 | CZEVL | {725AE927-5D00-4EBC-BB61-9362207F1B5D} | EventList
2 | CZI | {45165480-EEB9-417E-BC72-877E9A37EDAE} | Label
3 | CZI | {DD9A366F-4941-45B9-94FD-6043B1B96C16} | SlidePreview
4 | JPG | {7B25A072-7E33-4D2B-8921-DE69D09A3127} | Thumbnail
Here we get the complete list of all attachments.
command 'SingleChannelTileAccessor'
The command 'SingleChannelTileAccessor' will use an accessor of type SingleChannelTileAccessor (cf. accessors). It will use the argument '-p' or '--plane-coordinate' in order to specify the plane, and the argument '-r' or '--rect' in order to specify a rectangular (and axis-aligned) region (or ROI). The pixel-type of the output is determined automatically (cf. ISingleChannelTileAccessor).
The following sample will extract the ROI (x=21300,y=21000,w=4096,h=4096) from channel #0
CZIcmd.exe --command SingleChannelTileAccessor --plane-coordinate C0 --rect rel(21300,21000,4096,4096) --source D:\PICTURES\2014_02_05__16_39__0020-2.czi --output d:\PICTURES\Out\Output_2014_02_05__16_39__0020-2
and write out the result to a PNG-file with name d:\PICTURES\Out\Output_2014_02_05__16_39__0020-2.PNG.
The following arguments are meaningful for this command:
- '-p' or '--plane-coordinate'
- '-r' or '--rect'
- '-j' or '--jpgxrcodec'
- '-b' or '--background'
command 'ChannelComposite'
The command 'ChannelComposite' operates similar to 'SingleChannelTileAccessor', but in addition gathers the tile-composites from all channels, applies display-settings and creates a multi-channel-composite. Therefore, the argument to '--plane-coordinate' does not contain a C-coordinate (all channels which are marked 'active' in the display-settings will be processed). The display-settings are either given on the commandline with the argument '-d' or '--display-settings', or if this argument is not given, then they are retrieved from the CZI-document's metadata.
The following sample will create a PNG-file (with name d:\PICTURES\Out\Output_DCV_30MB.PNG) just like in the ZEN-2D-viewer (using the display-settings from the CZI-file):
CZIcmd.exe --command ChannelComposite --plane-coordinate Z10 --rect rel(0,0,512,512) --source D:\PICTURES\DCV_30MB.czi --output d:\PICTURES\Out\Output_DCV_30MB
The following arguments are meaningful for this command:
- '-p' or '--plane-coordinate'
- '-r' or '--rect'
- '-j' or '--jpgxrcodec'
- '-b' or '--background'
- '-d' or '--display-settings'
- '-f' or '--tile-filter'
In order to specify the display-settings on the commandline, a JSON-notation is used - an example is shown here:
{
"channels": [
{
"ch": 0,
"tinting": "#41ff00",
"weight": 1,
"black-point": 0,
"white-point": 0.15259021896696423
},
{
"ch": 1,
"tinting": "#ffd200",
"weight": 1,
"black-point": 0,
"white-point": 0.15259021896696423
},
{
"ch": 2,
"tinting": "#4178ff",
"weight": 1,
"black-point": 0,
"white-point": 0.15259021896696423
}
]
}
It is an array "channels", where the following fields are possible:
| field name | type | explanation |
|---|---|---|
| ch | integer | the channel-index for which this channel-display-settings applies to |
| black-point | number | the black-point (default: 0) |
| white-point | number | the white-point (default: 1) |
| tinting | string | gives the RGB24-color as a 6-digit hexadecimal number, must start with a hash ('#') |
| gamma | number | the gradation curve is defined by a gamma with the value given here |
| splinelut | array of numbers | the gradation curve is defined a spline, and the list of numbers are the x and y coordinates of the control-points of a spline |
Note that 'gamma' and 'splinelut' are mutually exclusive, if both happen to be present, then 'gamma' takes precedence.
An example for a display-setting when specifying a spline is:
{
"channels": [
{
"ch": 0,
"splinelut": [
0.362559241706161, 0.876190476190476,
0.554502369668246, 0.561904761904762
]
}
]
}
Note that it is a flat list of numbers, where the first number is interpreted as X and the second as Y - and so on.
Passing this JSON on the commandline might be challenging, though - because many characters need to be escaped (depending on your command shell).
command 'ExtractAttachment'
The command 'ExtractAttachment' allows to extract attachments and save them to a distinct file.
>CZIcmd.exe --command ExtractAttachment --source D:\PICTURES\NaCZIrTestData\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi --output attachments
>dir
Volume in drive D is DATA
Volume Serial Number is 74F9-A4A3
Directory of D:\TFSJBL\LibCZIDistrib\Src\Build\VS\Win32\Release\out
05/11/2016 12:56 PM <DIR> .
05/11/2016 12:56 PM <DIR> ..
05/11/2016 12:56 PM 158 attachments_EventList_1.CZEVL
05/11/2016 12:56 PM 2,887,520 attachments_Label_2.CZI
05/11/2016 12:56 PM 6,744,768 attachments_SlidePreview_3.CZI
05/11/2016 12:56 PM 3,904 attachments_Thumbnail_4.JPG
05/11/2016 12:56 PM 16 attachments_TimeStamps_0.CZTIMS
5 File(s) 9,636,366 bytes
2 Dir(s) 519,149,056,000 bytes free
The filename of the attachments is composed from the --output-argument, appending the name of the attachment and its id. The extension is given by the 'filetype'-field of the attachment.
In the above example, all attachments are processed. It is possible to filter the attachments - by giving the name or the index. This is specified with the --selection-argument:
>CZIcmd.exe --command ExtractAttachment --source D:\PICTURES\NaCZIrTestData\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi --output attachments --selection {\"name\":\"Thumbnail\"}
This will only save the attachments with 'name' = "Thumbnail".
>CZIcmd.exe --command ExtractAttachment --source D:\PICTURES\NaCZIrTestData\Example_TMA1_Zeb1_SPRR2_Ck19_S100-1-1-1-1.czi --output attachments --selection {\"index\":1.0}
This will only save the attachments with id = 1.
