Image-based target point position detection method and apparatus, and electronic device

Abstract

The invention discloses an image-based target point position detection method, belongs to the technical field of computers, and is used for solving the problem of low target point position detection performance. The point position detection method disclosed by the embodiment of the invention comprises the following steps: acquiring a plurality of image samples marked with real target point positions; calculating a loss value of the neural network model according to a variable through a loss function of the neural network model, adjusting parameters of the neural network model by taking the minimum loss value as a target, and training the neural network model; wherein the loss function is configured to monotonically increase relative to the absolute value of a variable, the gradient function corresponding to the loss function is a monotonically decreasing function, the value of the gradient function is greater than 1, and the gradient function gradually approaches 1 when the variable approaches infinite; wherein the variable is used for representing a difference value between a true value and a predicted value, the true value is determined based on a sample label, and the predictedvalue is predicted through the neural network model.

Description

technical field

[0001] The present application relates to the technical field of image recognition and detection, in particular to an image-based target point position detection method, device, electronic equipment and storage medium. Background technique

[0002] Image-based target point position detection has a wide range of applications, such as face key point detection based on face images, and pedestrian detection based on video images. Taking face detection as an example, face detection is the core technology of products such as face recognition, face beauty makeup, and face mapping. Many applications can be developed based on the key points of the face detected in the face image. With the continuous deepening of people's research on deep learning, the research on image-based target point position detection through deep learning methods has been continuously carried out, and certain results have been achieved. The usual target point position detection task is a regre...

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