Method and device for straight line detection and image processing

An image processing method, comprising:

• obtaining an image to be processed;
• performing an edge detection on the image to obtain a plurality of sample pixels;
• dividing a horizontal axis and a vertical axis of a straight line parameter space equally at a predetermined first pitch and a predetermined second pitch, respectively, so as to divide the straight line parameter space into a plurality of parameter areas;
• voting for the plurality of parameter areas of the straight line parameter space utilizing a coordinate of each sample pixel to obtain a vote amount of each of the parameter areas;
• extracting a straight line parameter and the vote amount of each of the parameter areas having the vote amount larger than a voting threshold, and grouping the straight line parameters having a distance within a range of a predetermined distance threshold in the straight line parameter space into a group;
• weighted averaging the straight line parameter of each group and the vote amount respectively to obtain the straight line parameter of a detected straight line;
• and
• outputting or storing a straight line parameter of the detected straight line.

A straight line detection device comprising a memory storing a plurality of programs and a processor, wherein the programs when executed by the processor, cause the processor to perform operations, comprising:

• dividing a horizontal axis and a vertical axis of a straight line parameter space equally at a predetermined first pitch and a predetermined second pitch, so as to divide the straight line parameter space into a plurality of parameter areas;
• voting for the plurality of parameter areas of the straight line parameter space utilizing a coordinate of each sample pixel to obtain a vote amount of each of the parameter areas;
• extracting a straight line parameter and the vote amount of each of the parameter areas having the vote amount larger than a voting threshold, and group the straight line parameters having a distance within a range of a predetermined distance threshold in the straight line parameter space into a group;
• and
• weighting and averaging the straight line parameter of each group and the vote amount respectively to obtain the straight line parameter of a detected straight line.