Program creation device, object detection system, anchor setting method, and anchor setting program

An anchor setting method of setting an anchor used in an object detection program for detecting whether an object is included in an image, the anchor setting method comprising:

• acquiring training data including a plurality of image data including area information of the object;
• acquiring anchor information that is information of a frame specifying a region for each cell for detecting a presence or absence of the object from the image;
• executing machine learning of the training data based on the anchor information to create a learned program for extracting the object from the image;
• acquiring information on a target region of the training data and on aspect ratios of the anchor, calculating a degree of matching between the anchor and the target region for each aspect ratio while changing a size of the anchor, and calculating an adoption rate of the target region whose degree of matching is a proportion no less than a threshold;
• and
• determining, based on a result of the calculating of the adoption rate, the size of the anchor used in the learned program.

A non-transitory computer readable medium storing an anchor setting program for causing a processing of setting an anchor to be executed, the anchor being used in an object detection program for detecting whether an object is included in an image, wherein the anchor setting program causes to be executed:

• acquiring training data including a plurality of image data including area information of the object,
• acquiring anchor information that is information of a frame specifying a region for each cell for detecting a presence or absence of the object from the image,
• executing machine learning of the training data based on the anchor information to create a learned program for extracting the object from the image,
• acquiring information on a target region of the training data and on aspect ratios of the anchor, calculating a degree of matching between the anchor and the target region for each aspect ratio while changing a size of the anchor, and calculating an adoption rate of the target region whose degree of matching is a proportion no less than a threshold, and
• determining, based on a result of the calculating of the adoption rate, the size of the anchor used in the learned program.