An infrared temperature measurement device, wherein, the infrared temperature measurement device comprises an image sensor and a processor;
- the image sensor is configured for capturing a grayscale image;
- the processor is configured for performing the following operations:
- determining a measurement temperature of a to-be-measured target based on the grayscale image captured to obtain a first measurement temperature;
- determining key point coordinates of the target based on a target image;
- determining a first distance based on the key point coordinates and configuration information of an infrared temperature measurement device, wherein the first distance is a distance between the target and the infrared temperature measurement device;
- determining an actual temperature of the target based on the first measurement temperature and the first distance,
- wherein, the key point coordinates of the target comprise coordinates of a first key point and coordinates of a second key point, wherein the first key point and the second key point are any two key points whose actual distance is known among key points of the target, the configuration information comprises a focal distance and a pixel size;
- determining the first distance based on the key point coordinates and the configuration information of the infrared temperature measurement device, comprises:
- determining a horizontal distance between the first key point and the second key point in the target image, and determining a vertical distance between the first key point and the second key point in the target image, based on the coordinates of the first key point and the coordinates of the second key point to obtain a first horizontal distance and a first vertical distance;
- determining a second distance based on the first horizontal distance, the first vertical distance, and the pixel size, wherein the second distance is a distance between the first key point and the second key point in the target image;
- determining the first distance based on a first actual distance, the focal distance, and the second distance, wherein the first actual distance is an actual distance between the first key point and the second key point,
- wherein, the target image comprises a visible light image, the key point coordinates are facial key point coordinates, before determining the second distance based on the first horizontal distance, the first vertical distance and the pixel size, the processor is further configured for performing the following operations:
- if it is determined that a facial area of the target is not a frontal image based on the visible light image, determining a yaw angle and a pitch angle of the target;
- correcting the first horizontal distance based on the yaw angle and correcting the first vertical distance based on the pitch angle to obtain a second horizontal distance and a second vertical distance;
- determining the second distance based on the first horizontal distance, the first vertical distance, and the pixel size, comprises:
- determining the second distance based on the second horizontal distance, the second vertical distance, and the pixel size.