Method: Magick::Image#unique_colors

Defined in:
ext/RMagick/rmimage.cpp

#unique_colors ⇒ Magick::Image

Constructs a new image with one pixel for each unique color in the image. The new image has 1 row. The row has 1 column for each unique pixel in the image.

Returns:



15121
15122
15123
15124
15125
15126
15127
15128
15129
15130
15131
15132
15133
15134
15135
15136
 
# File 'ext/RMagick/rmimage.cpp', line 15121

VALUE
Image_unique_colors(VALUE self)
{
    Image *image, *new_image;
    ExceptionInfo *exception;

    image = rm_check_destroyed(self);
    exception = AcquireExceptionInfo();

    GVL_STRUCT_TYPE(UniqueImageColors) args = { image, exception };
    new_image = (Image *)CALL_FUNC_WITHOUT_GVL(GVL_FUNC(UniqueImageColors), &args);
    rm_check_exception(exception, new_image, DestroyOnError);
    DestroyExceptionInfo(exception);

    return rm_image_new(new_image);
}