Antenna Board Alignment via Contrasting Background and Binarization

The patent applies preliminary actions by first performing binarization on the image to convert it into a binary image where the antenna board and background are clearly distinguished. This preliminary step prepares the image for subsequent edge detection, ensuring that the detection algorithm can accurately identify edges even when the antenna board color is similar to the screw head color. The binarization process creates a clear distinction between the board and background before edge detection begins.

The patent introduces an intermediary element by using a contrasting background (different color from the antenna board) to enhance edge detection. This background acts as a mediator that creates a clear visual distinction between the antenna board and its surroundings, allowing traditional edge detection algorithms to work effectively. The contrasting background serves as an intermediate reference that improves the detection accuracy without requiring complex modification of the detection algorithms themselves.

The patent applies preliminary action by implementing an alignment process that uses the contrasting background and binarized image to automatically position the antenna board correctly before detection begins. This preliminary alignment step ensures that the board is properly oriented and positioned, creating optimal conditions for accurate screw hole position detection. The alignment process prepares the system in advance, preventing detection errors that would occur with misaligned boards.

The patent replaces manual or mechanical alignment methods with an image processing-based alignment system. By using computer vision techniques to detect the antenna board's position and orientation relative to the contrasting background, the system automatically performs alignment without requiring complex mechanical adjustment mechanisms. This substitution of mechanical alignment with optical-digital alignment simplifies the overall system while improving precision.

The patent introduces a contrasting background as an intermediary element that compensates for the similar colors between the antenna board and screw head. This background serves as a reference frame that creates a clear distinction between the board and its surroundings, allowing the detection system to accurately identify the board's position and orientation. The intermediary background enables accurate detection without requiring expensive materials with contrasting colors.

The patent utilizes color changes by implementing binarization that transforms the original image into a binary representation where color differences are emphasized. The binarization process converts the image into distinct regions based on color intensity, creating a clear visual distinction between the antenna board and the contrasting background. This color transformation enables accurate edge and feature detection even when the original colors of the board and screw head are similar.