Boolean matrix. A two-dimensional array of boolean values, can be used to efficiently store a binary matrix (every matrix element takes only one bit) and query the values using natural cartesian coordinates. Creates a bitmap with the specified size, filled with [code]false[/code]. Creates a bitmap that matches the given image dimensions, every element of the bitmap is set to [code]false[/code] if the alpha value of the image at that position is equal to [code]threshold[/code] or less, and [code]true[/code] in other case. Returns bitmap's value at the specified position. Returns bitmap's dimensions. Returns the amount of bitmap elements that are set to [code]true[/code]. Applies morphological dilation to the bitmap. The first argument is the dilation amount, Rect2 is the area where the dilation will be applied. Sets the bitmap's element at the specified position, to the specified value. Sets a rectangular portion of the bitmap to the specified value.