Invoice text detection method

The invention belongs to the technical field of invoice text detection, and particularly relates to an invoice text detection method which comprises the following specific detection steps: S1, inputting an image: collecting and inputting image information of an invoice text to be detected; S2, aligning invoice key point detection with invoice key area clipping; S3, detecting a invoice textbox; S4,performing invoice classification and coordinate inverse mapping; and S5, outputting the image. The accuracy is high. Benefiting from selecting two most obvious positions on the invoice as key points, the key point detection in the first step of the method is relatively stable and accurate. After the key points are obtained, the key position area in the invoice can also be quickly obtained. And the robustness is high: even if the invoice image is changed such as rotation, the invoice key points can still be stably detected, and the stability of result output is ensured. The step S2 and the step S3 of the method are r