Method
VipsImagecountlines
Declaration [src]
int
vips_countlines (
VipsImage* in,
double* nolines,
VipsDirection direction,
...
)
Description [src]
Function which calculates the number of transitions between black and white for the horizontal or the vertical direction of an image. black<128 , white>=128 The function calculates the number of transitions for all Xsize or Ysize and returns the mean of the result Input should be one band, 8-bit.
See also: vips_morph(), vips_conv().
| This method is not directly available to language bindings. |
Parameters
nolines |
double* |
Output average number of lines. |
|
| The argument will be set by the function. | |
direction |
VipsDirection |
Count lines horizontally or vertically. |
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... |
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