A method of controlling a guard tour of a thermal camera, wherein the thermal camera is a pan-tilt camera or a pan-tilt-zoom camera, comprises the steps of: obtaining a guard tour comprising a plurality of views of an area or facility and a sequence of movements and/or view times of the thermal camera for traversing the plurality of views; controlling the thermal camera to traverse the plurality of views according to the sequence of movements and view times of the guard tour; for each view: extracting a temperature profile based on thermal images from the thermal camera; based on the temperature profile, estimating whether an increased risk of overheating or overcooling exists for the view; and if so, adjusting the sequence of movements and view times of the thermal camera to show the view having an increased risk of overheating or overcooling more frequently.

A method of controlling a guard tour of a thermal camera, wherein the thermal camera is a pan-tilt camera or a pan-tilt-zoom camera, comprises the steps of: obtaining a guard tour comprising a plurality of views of an area or facility and a sequence of movements and/or view times of the thermal camera for traversing the plurality of views; controlling the thermal camera to traverse the plurality of views according to the sequence of movements and view times of the guard tour; for each view: extracting a temperature profile based on thermal images from the thermal camera; based on the temperature profile, estimating whether an increased risk of overheating or overcooling exists for the view; and if so, adjusting the sequence of movements and view times of the thermal camera to show the view having an increased risk of overheating or overcooling more frequently.

Thermal cameras, particularly less elaborate inexpensive designs, may deliver high temperature resolution at the expense of less clear displayed images. For many low visibility uses, such as firefighting, it may be advantageous to sacrifice some temperature detail for clarity and object recognition. Without sacrificing the actual detailed temperature information available in a captured scene, it may be beneficial to apply filters in series to raw image data that reduce visible noise and build back in feature contrast for the purposes of providing a user a displayed image that permits ease of object recognition, while still providing the raw data to a thermography module to maintain high resolution of temperature information if desired. In addition, more efficient and useful edge highlighting techniques are disclosed. For very low contrast scenes, such as smoky rooms and the like, other specific filters and equalization methods may be applied.

Thermal cameras, particularly less elaborate inexpensive designs, may deliver high temperature resolution at the expense of less clear displayed images. For many low visibility uses, such as firefighting, it may be advantageous to sacrifice some temperature detail for clarity and object recognition. Without sacrificing the actual detailed temperature information available in a captured scene, it may be beneficial to apply filters in series to raw image data that reduce visible noise and build back in feature contrast for the purposes of providing a user a displayed image that permits ease of object recognition, while still providing the raw data to a thermography module to maintain high resolution of temperature information if desired. In addition, more efficient and useful edge highlighting techniques are disclosed. For very low contrast scenes, such as smoky rooms and the like, other specific filters and equalization methods may be applied.

A temperature measuring device includes: a thermal infrared illuminating unit that irradiates with thermal infrared light a target whose temperature to be measured; a thermal infrared illumination image acquiring unit that acquires a thermal infrared illumination image including an image of the target; a thermal infrared image acquiring unit that acquires a thermal infrared image including the image of the target; a visible light image acquiring unit that acquires a visible light image including the image of the target; a calculating unit that calculates an image expansion amount of the image of the target based on the acquired visible light image and the acquired IR illumination image; an adding unit that adds the calculated image expansion amount to luminance of the image of the target; and a measuring unit that measures a temperature of the target based on the image of the target with the image expansion amount.

A temperature measuring device includes: a thermal infrared illuminating unit that irradiates with thermal infrared light a target whose temperature to be measured; a thermal infrared illumination image acquiring unit that acquires a thermal infrared illumination image including an image of the target; a thermal infrared image acquiring unit that acquires a thermal infrared image including the image of the target; a visible light image acquiring unit that acquires a visible light image including the image of the target; a calculating unit that calculates an image expansion amount of the image of the target based on the acquired visible light image and the acquired IR illumination image; an adding unit that adds the calculated image expansion amount to luminance of the image of the target; and a measuring unit that measures a temperature of the target based on the image of the target with the image expansion amount.

A thermal imaging device, comprising: a housing (3), which comprises a front housing (31); a lens mount (1), fixedly connected to the front housing (31), a sealing gasket (2) being provided between the front housing (31) and the lens mount (1); a lens (4), threaded with the lens mount (1); and a manual lens focusing structure, comprising a focusing wheel (8) and an axial positioning structure, wherein the focusing wheel (8) and the lens (4) are connected to each other in a synchronous rotation and relative axial movement mode, and the axial positioning structure implements axial positioning on the focusing wheel (8). In the process of focusing, the lens (4) axially moves with respect to the focusing wheel (8), and the focusing wheel (8) may not move axially due to the axial positioning structure.

A method for determining a presence of arthritis in a patient, including obtaining a first image of a patient's joint, wherein the first image is a visible light image, obtaining a second image of the patient's joint, wherein the second image is a thermal light image, determining an outline of the patient's joint from the first image, determining an outline of a reference area from the first image, wherein the patient's joint is adjacent to the reference area, determining a first representative topological temperature within the outline of the patient's joint of the first image from the second image, determining a second representative topological temperature within the outline of the reference area of the first image from the second image, comparing the first representative topological temperature and the second representative topological temperature; and determining a likelihood of the presence of arthritis within the patient's joint.

A method for determining a presence of arthritis in a patient, including obtaining a first image of a patient's joint, wherein the first image is a visible light image, obtaining a second image of the patient's joint, wherein the second image is a thermal light image, determining an outline of the patient's joint from the first image, determining an outline of a reference area from the first image, wherein the patient's joint is adjacent to the reference area, determining a first representative topological temperature within the outline of the patient's joint of the first image from the second image, determining a second representative topological temperature within the outline of the reference area of the first image from the second image, comparing the first representative topological temperature and the second representative topological temperature; and determining a likelihood of the presence of arthritis within the patient's joint.

The present disclosure relates to several types of finger vein sensor. In certain embodiments, the finger vein sensor includes: an image sensor, and an infrared light source. Image sensor captures infrared image of finger vein pattern of a finger of a target human. The image sensor faces down and is positioned at top of finger vein sensor. The infrared light source may include a predetermined number of infrared light-emitting diodes (LED), and they are arranged in one or more rows and one or more columns and positioned at bottom of finger vein sensor. The finger is positioned between infrared light source and image sensor. The infrared light from the infrared light source irradiates the finger vertically from the bottom to generate the infrared image of finger vein pattern of the finger on the image sensor, and the image sensor captures the infrared image of finger vein pattern of the finger.