Gesture-based cursor movement method and device for medical display

Abstract

The invention discloses a gesture-based cursor moving method and device for medical display and belongs to the field of gesture recognition. The method comprises: upon recognition of a first gesture, determining a first gesture direction and a first gesture displacement; when the first gesture displacement is greater than a preset threshold, moving a cursor on a first raster image from a first position to a second position according to the first gesture direction and a specified raster quantity; when it is recognized that the first gesture is switched to a second gesture, canceling display of the first raster image, and displaying in a second raster display area, a second raster image having a raster resolution greater than that of the first raster image, with the second position positioned in the second raster display area. By constructing the second raster image with higher resolution in the first display area included a position of the cursor, it is possible for the cursor to infinitely approach a target position, cursor movement accuracy is improved, and operability for a user is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of gesture recognition, in particular to a gesture-based cursor movement method and device for medical display. Background technique [0002] With the development and application of medical imaging technologies such as computed tomography (CT), magnetic resonance imaging (MRI), and ultrasound (US), traditional two-dimensional images only express the anatomical information of a certain section, while three-dimensional visualization technology is through Two-dimensional and spatial information constructs the relationship between the size and shape of human organs, soft tissues and lesions, and the location of surrounding tissues, which can assist doctors in diagnosis and treatment more vividly and three-dimensionally, and improve the accuracy and efficiency of diagnosis and treatment planning. Therefore, 3D visualization technology is being used more and more More and more used to assist doctors in...

AI Technical Summary

Problems solved by technology

[0005] In the process of implementing the above technical solution, the inventor found that the moving distance of the cursor on the screen and the moving distance of the user's gesture in the corresponding direction correspond to each other, that is, the user's gesture moves a unit length in the corresponding direction, and the cursor moves on the screen. Also move the unit length along this direction. When the distance between the cursor and the target is not an integer multiple of the unit length, the cursor can never move to the position of the target, that is, the cursor can only move to a position near the target, which cannot meet the requirements of computer-aided medical treatment. Precise positioning of the target position in the display

Moreover, in the process of implementing the above technical solution, the inventor also found that the cursor has a high degree of freedom of movement, and at the same time, the cursor will move with the slight shaking of the user's hand, and is more sensitive to the shaking of the gesture, so it is not sensitive to the movement of the user's gesture. The precision requirements are also high, resulting in difficult operation and low positioning accuracy, and after the cursor is positioned at the target position, if the user's gesture shakes slightly, the cursor will fly away from the target position with the shaking of the user's gesture, stable lower sex

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