Table 1.

Time performance.

Operations	Clock cycles
Load from ADC	≈8 × N
Shift 1 pixel	1
Copy	1
AND/OR/NOT	1
Binary Erosion / Dilation	≈M(1)
Gray-scale Erosion / Dilation	≈M × N(2)
Detecting a void image	2
Extracting the Range and the center	8
Extracting coordinates of activated pixels	≈2K(3)
Bit-serial binary image input/output	≈N × N

(1) M is the number of active pixels in a structure element.

(2) N × N is the pixels of an image.

(3) K is the number of active pixels in a binary image.