USGS MIPS Tunenav Documentation
This program creates a sonar image that has been geometrically corrected to another sonar image(referred to as the master image) using a user supplied control point file. That is, it takes an image(referred to as the slave) and warps it so it has the same geometry as the master image. Geometrically correcting the slave image is done by means of extrapolating image data between control points. Two methods of extrapolation, extrapolation from the top and extrapolation from the bottom, are supported. Extrapolation from the top/bottom uses the first control point starting at the top/bottom of the image as a starting reference point used in the geometric corrections. The user supplied control point file follows the following format:
point_num1,slave_line,slave_samp,master_line,master_samp
point_num2,slave_line,slave_samp,master_line,master_samp
point_num3,slave_line,slave_samp,master_line,master_samp
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point_numj,slave_line,slave_samp,master_line,master_samp
Note that these control points should be in order where the first control point is at the beginning of the slave image and the last control point in the file is the last one in the slave image.
Files
This program requires as input three input files. The first two are the master and slave images which can be unsigned 8-bit or signed 16-bit image files. The third input file is a user supplied control point file. An output file of the same type as the input image files is created which is the corrected slave image. Image and sonar labels are transferred from the slave image to the output image file.
Parameters
- EXTOP or EXBOT
- These options are used to select which control point to start extrapolating from. Extop allows TUNENAV to extrapolate using the first control point in the slave image as a reference point for later extrapolations. Exbot allows TUNENAV to extrapolate using the last control point in the slave image. There is no default for these two parameters.
See Also
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