Re: .NEF image format in Import
- To: mathgroup at smc.vnet.net
- Subject: [mg90202] Re: .NEF image format in Import
- From: David Reiss <dbreiss at gmail.com>
- Date: Wed, 2 Jul 2008 05:29:57 -0400 (EDT)
- References: <g4d2qq$en1$1@smc.vnet.net>
HI Andrew,
There is no NEF import for Mathematica at this time. The list of
import formats is given by
$ImportFormats
and gives the list
{"3DS", "ACO", "AIFF", "ApacheLog", "AU", "AVI", "Base64", "Binary", \
"Bit", "BMP", "Byte", "BYU", "BZIP2", "CDED", "CDF", "Character16", \
"Character8", "Complex128", "Complex256", "Complex64", "CSV", "CUR", \
"DBF", "DICOM", "DIF", "Directory", "DXF", "EDF", "ExpressionML", \
"FASTA", "FITS", "FLAC", "GIF", "Graph6", "GTOPO30", "GZIP", \
"HarwellBoeing", "HDF", "HDF5", "HTML", "ICO", "Integer128", \
"Integer16", "Integer24", "Integer32", "Integer64", "Integer8", \
"JPEG", "JPEG2000", "JVX", "LaTeX", "List", "LWO", "MAT", "MathML", \
"MBOX", "MDB", "MGF", "MOL", "MPS", "MTP", "MTX", "MX", "NB", \
"NetCDF", "NOFF", "OBJ", "ODS", "OFF", "Package", "PBM", "PCX", \
"PDB", "PDF", "PGM", "PLY", "PNG", "PNM", "PPM", "PXR", "QuickTime", \
"RawBitmap", "Real128", "Real32", "Real64", "RIB", "RSS", "RTF", \
"SCT", "SDTS", "SND", "Sparse6", "STL", "String", "SXC", "Table", \
"TAR", "TerminatedString", "Text", "TGA", "TIFF", "TSV", \
"UnsignedInteger128", "UnsignedInteger16", "UnsignedInteger24", \
"UnsignedInteger32", "UnsignedInteger64", "UnsignedInteger8", \
"USGSDEM", "UUE", "VCF", "WAV", "Wave64", "WDX", "XBM", "XHTML", \
"XHTMLMathML", "XLS", "XML", "XPORT", "XYZ", "ZIP"}
Since you didn't specify the import format explicitly in your command,
I suspect that Mathematica is looking at the file and finding a jpeg
specification for the thumbnail at the beginning of the file and then
trying to do its best from there.
If you were to write
Import["image.NEF","NEF"]
to explicitly tell Mathematica the format to try to read, you will get
$Failed as an output.
You can, however, get information on what can be read from the file by
looking for its "Elements" as in
Import["/Users/dreiss/Photos/SW_1_20_08/Card 1/_DSC0111.NEF", \
"Elements"]
which, in my case here, gave
{"Animation", "Author", "BitDepth", "CameraTopOrientation", \
"ColorMap", "ColorSpace", "Comments", "CopyrightNotice", "Data", \
"DataType", "Device", "DeviceManufacturer", "Frames", "Graphics", \
"GrayLevels", "ImageCreationDate", "ImageEncoding", \
"ImageResolution", "ImageSize", "RawData", "RGBColorArray"}
And then these can be used to extract explicit parts of the data that
Mathematica is able to access from the file as in,
In[27]:= Import["/Users/dreiss/Photos/SW_1_20_08/Card \
1/_DSC0111.NEF", "DeviceManufacturer"]
Out[27]= "NIKON CORPORATION"
I hope that this helps...
--David
A WorkLife FrameWork
E x t e n d i n g MATHEMATICA's Reach...
Trial Version at:
http://scientificarts.com/worklife/
On Jul 1, 7:01 am, Andrew Watson <andrew.b.wat... at nasa.gov> wrote:
> I am trying to import an image in raw format from a digital camera.
> The format name is .NEF , developed by Nikon.
>
> The command
>
> test = Import["image.NEF"]
>
> works, but the image acquired is {120,160} in dimensions, rather than
> the true {2000, 3008}.
>
> I suspect it is importing a small jpeg preview, instead of the full
> image.
>
> Any ideas how to import the full image, and whether .NEF is supported?
>
> Andrew B. Watson
> Senior Scientist for Vision Research
> NASA Ames Research Center
> Moffett Field, CA 94035-1000
> (650) 604-5419