Create a rectangle parallel to the coordinate axes.
The operator rectangle1 generates one or more rectangles parallel to the coordinate axes which are described by the upper left corner (Row1, Column1) and the lower right corner (Row2, Column2). More than one region can be created by passing a tuple of corner points. The coordinate system runs from (0,0) (upper left corner) to (Width-1,Height-1). See in this connection get_system and init_horus.
Rectangle (output_object) |
region(-array) -> object |
Created rectangle. |
Row1 (input_control) |
rectangle.origin.y(-array) -> real / integer |
Line of upper left corner point. | |
Default value: 30.0 | |
Suggested values: 0.0, 10.0, 20.0, 50.0, 100.0, 200.0 | |
Range of values: 0.0 <= Row1 <= 511.0 (lin) | |
Minimum increment: 1.0 | |
Recommended increment: 10.0 |
Column1 (input_control) |
rectangle.origin.x(-array) -> real / integer |
Column of upper left corner point. | |
Default value: 20.0 | |
Suggested values: 0.0, 10.0, 20.0, 50.0, 100.0, 200.0 | |
Range of values: 0.0 <= Column1 <= 511.0 (lin) | |
Minimum increment: 1.0 | |
Recommended increment: 10.0 |
Row2 (input_control) |
rectangle.corner.y(-array) -> real / integer |
Line of upper left corner point. | |
Default value: 100.0 | |
Suggested values: 10.0, 20.0, 50.0, 100.0, 200.0, 300.0, 400.0, 500.0, 511.0 | |
Range of values: 0.0 <= Row2 <= 511.0 (lin) | |
Minimum increment: 1.0 | |
Recommended increment: 10.0 | |
Restriction: Row2 >= Row1 |
Column2 (input_control) |
rectangle.corner.x(-array) -> real / integer |
Column of lower right corner point. | |
Default value: 200.0 | |
Suggested values: 10.0, 20.0, 50.0, 100.0, 200.0, 300.0, 400.0, 500.0, 511.0 | |
Range of values: 0.0 <= Column2 <= 511.0 (lin) | |
Minimum increment: 1.0 | |
Recommended increment: 10.0 | |
Restriction: Column2 >= Column1 |
/* Contrast improvement in a rectangular region of interest */ read_image(:Image:'fabrik':) > open_window(::0,0,-1,-1,'root','visible','':) > disp_image(Image:::) > draw_rectangle1(:::Row1,Column1,Row2,Column2) > rectangle1(:Rectangle:Row1,Column1,Row2,Column2:) > reduce_domain(Image,Rectangle:Mask::) > emphasize__(Mask:Emphasize:9,9,1.0:) > disp_image(Emphasize:::).
If the parameter values are correct, the operator rectangle1 returns the value TRUE. Otherwise an exception is raised. The clipping of the current image format is set via the operator set_system(::'clip_region',<true/false>:).
rectangle2, store_polygon, fill_up, store_chord, store_coord, store_lines
draw_rectangle1, reduce_domain, smallest_rectangle1