16.69. stereo

The stereo program takes as input a stereo pair of images that overlap with corresponding camera models and creates an output point cloud image that can be processed into a visualizable mesh or a DEM using point2mesh and point2dem respectively.

This program is deprecated and can be used only with ASP’s original block matching algorithm (ASP_BM). It is suggested to use instead parallel_stereo (Section 16.52).

Usage:

stereo [options] <images> [<cameras>] <output_file_prefix>

Example (for ISIS):

stereo --stereo-algorithm asp_bm --subpixel-mode 1 \
  file1.cub file2.cub results/run

Example (for DigitalGlobe Earth images):

stereo -t dg --stereo-algorithm asp_bm --subpixel-mode 3 \
  file1.tif file2.tif file1.xml file2.xml                \
  results/run

See Section 3 for introductory examples, Section 6 for the various stereo algorithms available, and Section 8 for many usage examples.

How to pass options to stereo via the command line or the stereo.default configuration file is discussed in Section 17. stereo creates a set of intermediate files, they are described in Section 19.

16.69.1. Command-line options

-t, --session-type <type_name>

Select the stereo session type to use for processing. Usually the program can select this automatically by the file extension. See Section 16.52 for options.

-s, --stereo-file <filename (default: ./stereo.default)>

Define the stereo.default file to use.

-e, --entry-point <integer (from 0 to 5)>

Stereo Pipeline entry point. Start at this stage. See Section 16.52.4.

--stop-point <integer (from 1 to 6)>

Stereo Pipeline stop point (stop at the stage right before this).

--corr-seed-mode <integer (from 0 to 3)>

Correlation seed strategy (Section 17.2).

--threads <integer (default: 0)>

Select the number of threads to use for each process. If 0, use the value in ~/.vwrc.

--cache-size-mb <integer (default = 1024)>

Set the system cache size, in MB.

--tile-size <integer (default: 256 256)>

Image tile size used for multi-threaded processing.

--no-bigtiff

Tell GDAL to not create BigTiff files.

--tif-compress <None|LZW|Deflate|Packbits (default: LZW)>

TIFF compression method.

-v, --version

Display the version of software.

-h, --help

Display the help message.