36 lines
1.4 KiB
Groff
36 lines
1.4 KiB
Groff
.TH GLDS 1 "27 January 1992"
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.SH NAME
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glds, glds_features \- calculate the spatial grey level difference matrix and features on it
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.SH SYNOPSIS
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glds image matrix xpos ypos xsize ysize dx dy
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glds_features matrix
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.SH DESCRIPTION
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.B glds
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creates a 256 by 1 one channel spatial grey level difference
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matrix (sglds) of the box
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determined by the parameters (xp, yp; xs, ys) within
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the vasari image file image. The matrix
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is written onto the vasari image file matrix. The displacement
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vector is determined by (dx, dy). The user must ensure that there
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is enough border pixels around the box within im dictated by the displacement
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vector (dx,dy) or else the program fails.
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All entries of the sgld matrix are double normalised to the number
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of pairs involved. This function is a direct implementation of the paper:
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Haralick R. M., Shanmugan K. and Dinstein I., 'Textural features for
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image classification', IEEE Transactions on Systems, Man, and Cybernetics,
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Vol. SMC-3, No 6, Nov. 1973, pp 610-621.
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Input im should be one band unsigned char image file.
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.B glds_features
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calculates features on the spatial grey level difference vasari image
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file matrix. The calculated features are printed in the stderr.
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.SH SEE\ ALSO
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im_glds_matrix(3X), im_glds_asm(3X), im_glds_contrast(3X),
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im_glds_correlation(3X), im_glds_entropy(3X).
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.SH COPYRIGHT
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N. Dessipris
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.SH AUTHOR
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N. Dessipris \- 27/02/1992
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