Training sample obtaining method and device and model training method and device

The invention discloses a training sample obtaining method and device and a model training method and device, and the method comprises the steps: firstly obtaining an original image containing a target object, and adding a first label in the original image; and adding a second label in the original image based on the first label, adding a third label in the original image based on the second label, and obtaining a training sample based on the original image and the label image. Thus, the training sample not only marks the position relation between the target object and the image, but also marks the edge area and the key point position of the target object, and the perceptibility of the target object in the training sample is enhanced by performing all-around multiple marking on the target object in the training sample, so that the perceptibility of the target object in the training sample is improved. Therefore, the model trained by using the training sample can accurately perceive the target object, the road