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exrTrader supports all of the metadata provided by LightWave 3D when using the exrTrader image loader and saver, the exrTrader image filter supports a selection of metadata.
The metadata written by the exrTrader image saver is provided by LightWave 3D. The metadata written by the image filter is generated by exrTrader.
The following two tables list the metadata tags as documented in the LightWave 3D SDK, their content and the equivalent attribute as saved and loaded by exrTrader.
The metadata supported by LightWave mirrors EXIF tags which have been designed for digital photography. Tags that don't apply to OpenEXR images have been omitted.
LightWave metadata tag | Description | OpenEXR Attribute | Written by exrTrader image filter |
---|---|---|---|
LWIMPAR_ASPECT | x / y Pixel Aspect. | native |
LWIMPAR_PIXELWIDTH Actual (scanned)Pixel Width in (mm). xDensity
LWIMPAR_FRAMESPERSECOND Number Of Frames Per Second. FramesPerSecond
LWIMPAR_BLACKPOINT Black Point Of Layer.
LWIMPAR_WHITEPOINT White Point Of Layer. WhiteLuminance
LWIMPAR_GAMMA Linearity Of RGB Color. always 11
LWIMPAR_PIXELXDIMENSION Valid image width. native
LWIMPAR_PIXELYDIMENSION Valid image height. native
LWIMPAR_EXPOSURETIME Exposure time (reciprocal of shutter speed). Unit is seconds. ExpTime
LWIMPAR_FNUMBER The actual F-number(F-stop) of lens when the image was taken. Aperture
LWIMPAR_ISOSPEEDRATINGS CCD sensitivity equivalent to Ag-Hr film speedrate. (int) IsoSpeed
LWIMPAR_DATETIMEORIGINAL Date/Time of original image taken. This value should not be modified by user program. CapDate
LWIMPAR_FOCALLENGTH Focal length of lens used to take image. Unit is millimeter. FocalLength
LWIMPAR_MAKERNOTE Maker dependent internal data. Some of maker such as Olympus/Nikon/Sanyo etc. uses IFD format for this area. See table of Maker Metadata
LWIMPAR_USERCOMMENT Stores user comment. Comment editable LWIMPAR_APERTUREVALUE The actual aperture value of lens when the image was taken. To convert this value to ordinary F-number (F-stop),calculate this value's power of root 2 (=1.4142). For example, if value is '5', F-number is 1.4142^5 = F5.6. Aperture
LWIMPAR_SUBJECTDISTANCE Distance to focus point, unit is meter. Focus
LWIMPAR_MAKE Manufacturer of recording equipment. Make
LWIMPAR_MODEL Model name or model number of recording equipment. Model
LWIMPAR_SOFTWARE Name and version of the software used. Software
n/a Name of the computer that has written the image2 ComputerName
n/a Timezone offset for the capture date3 UtcOffset
n/a Username Owner
LightWave metadata tag | Description | OpenEXR Attribute | Written by exrTrader image filter |
---|
LWMN_COMPANYNAME Company Name LW.Company
LWMN_FRAMENUMBER Current frame number LW.FrameNumber
LWMN_FIRSTFRAME First frame number LW.FirstFrame
LWMN_LASTFRAME Last frame number LW.LastFrame
LWMN_RENDERTIME Render time LW.Rendertime
LWMN_CAMERANAME Camera Name LW.CameraName
LWMN_CAMERATYPE Camera Type LW.CameraType
LWMN_ANTIALIASING Antialiasing LW.AA
LWMN_LENS Camera lens name LW.Lens
LWMN_PARTICLEBLUR Particle blur On/Off LW.ParticleBlur
LWMN_MOTIONBLURTYPE Motion blur type LW.MBType
LWMN_MOTIONBLURAMOUNT Motion blur amount LW.MBAmount
LWMN_MOTIONBLURPASSES Motion blur passes. LW.MBPasses
LWMN_TOTALPOINTS Total points LW.TotalPoints
LWMN_TOTALPOLYGONS Total polygons LW.TotalPolygons
LWMN_TOTALMEMORY Total memory LW.TotalMemory
LWMN_FRAMESTEP Frame step LW.Framestep
LWMN_RECONSTRUCTIONFILTER Reconstruction filter LW.AAFilter
LWMN_FIELDRENDERING Field rendering LW.FieldRendering
LWMN_RTREFLECTIONS RT reflections LW.RTReflections
LWMN_ADAPTIVESAMPLING Adaptive sampling LW.AdaptiveSampling
LWMN_STEREORENDER Stereo render. LW.Stereo
LWMN_RTREFRACTIONS RT refractions LW.RTRefractions
LWMN_RADIOSITY Radiosity LW.Radiosity
LWMN_RTTRANSPARENCY RT transparency LW.RTTransparency
LWMN_CAUSTICS Caustics LW.Caustics
LWMN_RENDERTHREADS Render threads LW.RenderThreads
LWNM_DEPTHOFFIELD Depth of field LW.DepthOfField
LWMN_OUTPUTFILES Output files LW.OutputFiles