Abstract: Systems and methods disclosed herein, in accordance with one or more embodiments provide for imaging gas in a scene, the scene having a background and a possible occurrence of gas. In one embodiment, a method and a system adapted to perform the method includes: controlling a thermal imaging system to capture a gas IR image representing the temperature of a gas and a background IR image representing the temperature of a background based on a predetermined absorption spectrum of the gas, on an estimated gas temperature and on an estimated background temperature; and generating a gas-absorption-path-length image, representing the length of the path of radiation from the background through the gas, based on the gas image and the background IR image. The system and method may include generating a gas visualization image based on the gas-absorption-path-length image to display an output image visualizing a gas occurrence in the scene.

Abstract: A method and a system to quantify gas in a thermal imaging device, said method comprising obtaining a gas-absorption-path-length image as a scene difference infrared image based on a gas infrared image and a scene background infrared image substantially depicting the same scene and generating a quantified scene difference infrared image based on said scene difference infrared image and a predefined gas-quantifying relation.

Abstract: The present invention relates in general to the field of applications and functions of an IR-camera device operated by a user in connection with the recording of IR images and to processing of IR images on a computer application program. A system for managing annotations to IR images comprising selectable annotation input functions that are actuatable by means of control commands displayed on the display is disclosed.

Abstract: Various embodiments of the present disclosure may include an imaging device configured to determine appropriate conditions for updating non-uniformity correction (NUC) terms. In certain embodiments, the imaging device may determine when the imaging device is likely not in use and update NUC terms during the times when the imaging device is likely not in use. Data from various position sensors such as gyroscopes, accelerometers, global positioning system receivers, and/or other data may be used to determine when the imaging device is likely not in use. Such position sensors may be coupled to the imaging device and/or may be remote from the imaging device. In certain embodiments, while NUC terms are updated, imaging data obtained may be modified with historical data to provide usable data.

Abstract: Various techniques are provided to generate enhanced visual representations of captured infrared (IR) data values. For example, various methods, systems, devices, and machine-readable mediums are provided that may be used to map color and/or grayscale values to temperature values. Such mapping permits a user to intuitively interpret the temperatures associated with the IR data values. The temperatures may be presented as a visual representation of the captured IR data values having an enhanced contrast.

Abstract: One or more embodiments of the invention relate to an image processing system and method for detail enhancement and noise reduction, in which the method includes: (a) an original image is created, (b) an information measure is calculated on the basis of the original image, (c) a weighting measure is calculated on the basis of the information measure, (d) the original image is low-pass filtered with a low-pass filter to form a low-pass filtered image, (e) a high-pass filtered image is calculated by subtracting the low-pass filtered image from the original image, (f) a detail-enhanced and noise-reduced image is obtained by a high-pass image scaled with the weighting measure being added to the low-pass image. One or more embodiments of the invention additionally relate to an image processing device comprising an image recording device, an image processing unit and an image display unit.

Abstract: The present disclosure relates to combination of images. A method according to an embodiment comprises: receiving a visual image and an infrared (IR) image of a scene and for a portion of said IR image extracting high spatial frequency content from a corresponding portion of said visual image. The method according to the embodiment further comprises combining said extracted high spatial frequency content from said portion of the visual image with said portion of the IR image, to generate a combined image, wherein the contrast and/or resolution in the portion of the IR image is increased compared to the contrast and/or resolution of said received IR image.

Abstract: A method and an image processing system of processing thermal images captured using a thermal imaging system. The processing comprises determining a reference image depicting a scene and retrieving, from a number of thermal images comprised in a data storage, a set of one or more thermal images based on a predetermined similarity measure. A measurement location in the reference image is determined, and for each of the one or more retrieved thermal images: a corresponding measurement location in the respective retrieved thermal image is determined; and a thermographic tool is placed on the corresponding measurement location in the respective retrieved thermal image.

Abstract: A method of presenting a visible representation of infrared (IR) radiation information onto an observed real world scene based on IR radiation emitted from said observed real world scene, using a thermography arrangement comprising an IR imaging system, a visible light imaging system, and a visible light projecting system.

Abstract: There is provided a method and an arrangement for generating a combined image having an enhanced transition between image areas each representing a different type of image information. The method may include: determining a set of pixel coordinates, wherein the set of pixel coordinates partly overlaps at least one area in the combined image wherein the pixel values represent image information according to a first type of image information; and/or wherein the set of coordinates partly overlaps at least another area in the combined image wherein the pixel values represent image information according to a second type of image information, dependent on a selection rule; and generating a new combined image by assigning pixel values to the pixels having coordinates comprised in the determined set of pixel coordinates dependent on a mixing rule and the pixel values of the corresponding coordinates of the combined image.

Abstract: Methods and computer systems are disclosed for generating an augmented image. For example, a method may include displaying a captured image on a display, wherein the image comprises image data values representing radiation emitted from an observed real world scene, receiving a user indication indicating a local area of interest as a user input signal via an input device, determining a first set of selected pixels in an displayed image representing an local area of interest based on said user input signal, determining a second set of selected pixels representing remaining pixels in said image excluded from said first set of selected pixels, and generating an augmented image by performing a first image processing operation on said first set of selected pixels and/or by performing a second image processing operation on said second set of selected pixels. Other example embodiments are also provided.

Abstract: There is provided for an embodiment a method for enabling improved analysis and interpretation of associated image data in an infrared (IR) image and a visible light (VL) image depicting a real world scene, captured using a thermography arrangement comprising an IR imaging system and a VL imaging system, the method comprising: capturing an IR image depicting the scene, having a first field of view (FOV); capturing a VL image depicting the scene, having a second FOV; processing at least one of the VL image and the IR image such that the FOV represented in the VL image substantially corresponds to the FOV represented in the IR image; associating the resulting IR and VL images to provide associated images; and enabling a user to access the associated images for display, wherein analysis and interpretation of the associated images, having image pair content, is intuitive as the resulting VL image and the resulting IR image after associating represent the same FOV.

Abstract: A system and a method for generating orientation-adapted images in a remote inspection system are disclosed, wherein said remote inspection system comprises an image-capturing unit, an image-presenting unit, an orientation sensor, a processor, and an imaging system comprised in said image-capturing unit. The method comprises capturing an image of a real world scene, wherein said image comprises a frame of image data values, obtaining orientation data values from an orientation sensor, and generating an orientation-adapted image based on said image data values and said orientation data values.

Abstract: Gas visualization in an image depicting a scene, for an example embodiment comprises capturing a first IR image depicting the scene at a first time instance and a second IR image depicting the scene at a second time instance; performing image processing operations on image data derived from said first IR image and from said second IR image, to generate a collection of data representing the location of gas in one of the first or second IR images; and generating a third image by adjusting pixel values in an image depicting the scene, dependent on pixel values of said collection of data. According to various embodiments, there is further provided further processing of the collection of data, and/or gas detection, before generation of the third image with adjusted pixel values.

Abstract: Various techniques are provided for a stray light compensation method for an infrared (IR) camera. For example, a stray light compensation method includes: capturing an IR image of a scene by an IR camera, generating a fixed pattern noise estimate FPNestt0 for time t0 using the captured IR image and a stray light model associated with the IR camera, and performing a fixed pattern noise (FPN) compensation of the captured IR image based on said FPNestt0 to obtain a stray light compensated IR image. The fixed pattern noise estimate may be generated through operations in a frequency domain representation of the captured IR image and the stray light model according to one or more embodiments.

Abstract: A method and an image processing system of processing thermal images captured using a thermal imaging system. The processing comprises determining a reference image depicting a scene and retrieving, from a number of thermal images comprised in a data storage, a set of one or more thermal images based on a predetermined similarity measure. A measurement location in the reference image is determined, and for each of the one or more retrieved thermal images: a corresponding measurement location in the respective retrieved thermal image is determined; and a thermographic tool is placed on the corresponding measurement location in the respective retrieved thermal image.