improve hough_circle docs

we were not actually saying what the output axes represented

see https://github.com/libvips/ruby-vips/issues/237
This commit is contained in:
John Cupitt 2020-06-15 12:40:43 +01:00
parent 05b0359897
commit 1ff9800958

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@ -279,6 +279,9 @@ vips_hough_circle_init( VipsHoughCircle *hough_circle )
* votes by circle circumference so circles of differing size are given equal
* weight.
*
* The output pixel at (x, y, band) is the strength of the circle centred on
* (x, y) and with radius (band).
*
* Use @max_radius and @min_radius to set the range of radii to search for.
*
* Use @scale to set how @in coordinates are scaled to @out coordinates. A