Abnormal first arrival automatic elimination method based on digital image connectivity algorithm

The invention provides an abnormal first arrival automatic elimination method based on a digital image connection algorithm, and the method comprises the steps: 1, carrying out the binarization processing of a first arrival pickup result, and converting the first arrival pickup result into a binary image; step 2, performing expansion processing on the binarized graph to obtain an expanded binary image; step 3, performing channel communication judgment on the image in the step 2, and reserving communication blocks greater than a channel communication threshold value; step 4, carrying out multiplication operation on the binary image of which the abnormal connected blocks are removed and the binary image in the step 1, and determining a first arrival position after processing as 1 in an operation result; step 5, performing adjacent channel abnormal first arrival judgment on a result after communication processing; and step 6, mapping an identification result to an original single shot, and performing local inter