Tools

This utility is used for reading data in NetCDF format. The utility can extract meta-information, images, quick-looks and roll-correct images. Dependent of the chosen function the output will either be ASCII files or images in ENVI image format. This utility is controlled through the ENVI menu interface and require the following lines to be included in the "User function" section of the ENVI.men file:

1 {NCDF Utilities}

2 {NCDF Catalogue} {ncdf_cata} {ncdf_image}

2 {NCDF Variables output} {ncdf_image_param} {ncdf_image}

2 {NCDF Image Extraction} {ncdf_image_out} {ncdf_image}

2 {NCDF Roll-Correction} {ncdf_image_roll} {ncdf_image}

2 {NCDF Auto convert (Full images} {ncdf_image_auto_all} {ncdf_image}

2 {NCDF Auto quick-look} {ncdf_image_auto_quick} {ncdf_image}

This utility is used for modelling supplementary ground control points for the use in TIN resampling of images. Depending on the parameters given the programme will model points along the edge of an image and / or model additional points inside the actual convex envelope of existing ground control points. In both cases is the modelling based on triangles "forced" in the cross-track direction of the image.

See the file GCP_sup.readme for details on the use. Input and output is in ASCII format.

This utility is used for roll-correcting an image based on a previously roll-corrected image. The application may be where a non-roll-corrected image has been processed through noise reduction procedures, and now is to be geo-corrected. In- and output are ENVI images. This utility is handled by the ENVI menu interface and require the following line to be included in the "User function" section of the ENVI.men file:

2 {Roll Correction} {roll_cor_ENVI} {roll_cor_img}

This utility is used for conversion of images between CHIPS for Windows and ENVI image format. The conversion from CHIPS to ENVI is done by writing the appropriate header file. The conversion from ENVI to CHIPS involves the splitting of multi-band images into single band images with embedded header information and optionally writing a ENVI meta-image. This utility is controlled by the ENVI menu interface, and requires the following lines to be included in the "User function" section of the ENVI.men file

1 {CHIPS Utilities}

2 {Convert ENVI to CHIPS files} {MK_ENVI_TO_CHIPS} {CHIPS_image}

2 {Write CHIPS to ENVI header} {MK_CHIPS_TO_ENVI} {CHIPS_image}