Abstract: Systems and methods related to steerable fields of view are provided. In one embodiment, a system includes an image sensor configured to capture a field of view. The system further includes an optical assembly including an optical element configured to direct the field of view to the image sensor. The system further includes a logic circuit. The logic circuit may send a control signal to the optical assembly to cause rotation of the optical element about an axis associated with the image sensor to adjust the field of view. The logic circuit may send a control signal to the image sensor to cause one or more images of the object to be captured. The logic circuit may calibrate the image sensor based on the one or more images of the object. Related devices and methods are also provided.

Abstract: Systems and methods include an image capture component configured to capture infrared images of a scene, and a logic device configured to identify a target in the images, acquire temperature data associated with the target based on the images, evaluate the temperature data and determine a corresponding temperature classification, and process the identified target in accordance with the temperature classification. The logic device identifies a person and tracks the person across a subset of the images, identify a measurement location for the target in a subset of the images based on target feature points identified by a neural network, and measure a temperature of the location using corresponding values from one or more captured thermal images. The logic device is further configured calculate a core body temperature of the target using the temperature data to determine whether the target has a fever and calibrate using one or more black bodies.

Abstract: An imager array may be provided as part of an imaging system. The imager array may include a plurality of infrared imaging modules. Each infrared imaging module may include a plurality of infrared sensors associated with an optical element. The infrared imaging modules may be oriented, for example, substantially in a plane facing the same direction and configured to detect images from the same scene. Such images may be processed in accordance with various techniques to provide images of infrared radiation. The infrared imaging modules may include filters or lens coatings to selectively detect desired ranges of infrared radiation. Such arrangements of infrared imaging modules in an imager array may be used to advantageous effect in a variety of different applications.

Abstract: Techniques are disclosed for imager health monitoring systems and methods. In one example, a method includes determining a characteristic of an active unit cell of a focal plane array (FPA) and/or a reference unit cell of the FPA. The active unit cell includes a detector selectively shielded from an incident scene. The reference unit cell includes a reference detector shielded from the incident scene. The method further includes determining a state of the FPA based at least in part on the characteristic. The method further includes transmitting an indication of the state of the FPA to selectively cause adjustment of the FPA Related devices and systems are also provided.

Abstract: Various techniques are provided for reducing noise in captured image frames. In one example, a method includes determining row values for image frames comprising scene information and noise information. The method also includes performing first spectral transforms in a first domain on corresponding subsets of the row values to determine first spectral coefficients. The method also includes performing second spectral transforms in a second domain on corresponding subsets of the first spectral coefficients to determine second spectral coefficients. The method also includes selectively adjusting the second spectral coefficients. The method also includes determining row correction terms based on the adjusted second spectral coefficients to reduce the noise information of the image frames. Additional methods and systems are also provided.

Abstract: Various techniques are provided for reducing noise in captured image frames. In one example, a method includes determining row values for image frames comprising scene information and noise information. The method also includes performing first spectral transforms in a first domain on corresponding subsets of the row values to determine first spectral coefficients. The method also includes performing second spectral transforms in a second domain on corresponding subsets of the first spectral coefficients to determine second spectral coefficients. The method also includes selectively adjusting the second spectral coefficients. The method also includes determining row correction terms based on the adjusted second spectral coefficients to reduce the noise information of the image frames. Additional methods and systems are also provided.

Abstract: Various techniques are provided for implementing a segmented focal plane array (FPA) of infrared sensors. In one example, a system includes a segmented FPA. The segmented FPA includes a top die having an array of infrared sensors (e.g., bolometers). The top die may also include a portion of a read-out integrated circuit (ROIC). The segmented FPA also includes a bottom die having at least a portion of the ROIC. The top and the bottom dies are electrically coupled via inter-die connections. Advantageously, the segmented FPA may be fabricated with a higher yield and a smaller footprint compared with conventional FPA architectures. Moreover, the segmented FPA may be fabricated using different semiconductor processes for each die.

Abstract: Techniques to set a frame rate and associated device manufacturing are disclosed. In one example, an imaging device includes a detector array configured to detect electromagnetic radiation associated with a scene and provide image data frames according to a first frame rate. The imaging device further includes a readout circuit configured to provide the image data frames according to a frame rate for the readout circuit. The imaging device further includes a fuse configured to set the frame rate for the readout circuit. Related methods and systems are also provided.

Abstract: Flight based infrared imaging systems and related techniques, and in particular UAS based thermal imaging systems, are provided to improve the monitoring capabilities of such systems over conventional infrared monitoring systems. An infrared imaging system is configured to compensate for various environmental effects (e.g., position and/or strength of the sun, atmospheric effects) to provide high resolution and accuracy radiometric measurements of targets imaged by the infrared imaging system. An infrared imaging system is alternatively configured to monitor and determine environmental conditions, modify data received from infrared imaging systems and other systems, modify flight paths and other commands, and/or create a representation of the environment.

Abstract: Systems and methods are disclosed herein to detect pixels exhibiting anomalous behavior in captured image frames. In some examples, temporal anomalous behavior may be identified, such as flickering pixels exhibiting large magnitude changes in pixel values that vary rapidly from frame-to-frame. In some examples, spatial anomalous behavior may be identified, such as pixels exhibiting values that deviate from an expected linear response in comparison with other neighbor pixels.

Abstract: Various techniques are disclosed for smart surveillance camera systems and methods using thermal imaging to intelligently control illumination and monitoring of a surveillance scene. For example, a smart camera system may include a thermal imager, an IR illuminator, a visible light illuminator, a visible/near IR (NIR) light camera, and a processor. The camera system may capture thermal images of the scene using the thermal imager, and analyze the thermal images to detect a presence and an attribute of an object in the scene. In response to the detection, various light sources may be selectively operated to illuminate the object only when needed or desired, with a suitable type of light source, with a suitable beam angle and width, or in otherwise desirable manner. The visible/NIR light camera may also be selectively operated based on the detection to capture or record surveillance images containing objects of interest.

Abstract: Various embodiments of the present disclosure may include one or more object detection devices. The object detection devices may include at least one distance sensor such as a radar, lidar, or other distance sensor and at least one thermal sensor such as a thermal imaging device. One or more object detection devices may be mounted to vehicles to provide enhanced representations of an area around the vehicles.

Abstract: Techniques are disclosed for facilitating burst mode calibration sensing and image mode sensing. In one example, a device includes a detector array configured to detect electromagnetic radiation and provide image data frames according to a first frame rate. The device further includes a logic circuit configured to determine whether a threshold delay has elapsed. The device further includes a frame output circuit configured to: provide, based at least on the threshold delay having elapsed, the image data frames according to the first frame rate; and provide, based at least on the threshold delay not having elapsed, the image data frames according to a second frame rate lower than the first frame rate. Related methods and systems are also provided.

Abstract: Various embodiments of the present disclosure may include an imaging system that includes a plurality of uncooled cameras configured to detect the presence of gas within a scene imaged. The plurality of cameras may include at least one broadband camera and at least one narrowband camera. The narrowband camera may include a filter or image data from the narrowband camera may be filtered to the band desired. The images captured by the broadband and narrowband cameras may be processed and/or analyzed to determine the presence of gas within the scene. An image may be generated incorporating the image data of the broadband and narrowband cameras and the presence of gas may be indicated within the image.

Abstract: Various techniques are provided to monitor electrical equipment. In some implementations, a monitoring system for a cabinet may include an infrared camera and a non-thermal camera. The infrared camera may be configured to capture one or more thermal images of at least a portion of electrical equipment positioned in an interior cavity of the cabinet. The non-thermal camera may be configured to capture one or more non-thermal images such as visible light images of the portion of electrical equipment. In some implementations, combined images may be generated that include characteristics of the thermal images and the non-thermal images for viewing by a user. In some implementations, the cameras may receive electrical power through a physical coupling to an electrical connector within the cabinet and/or through electromagnetic energy harvesting techniques. Other implementations are also provided.

Abstract: Various techniques are provided for using one or more thermal infrared (IR) imaging modules to enhance the dynamic range of images. In one example, devices and methods provide a first IR imaging module that captures a first image, a second IR imaging module optimized for higher IR irradiance that captures a second image, and a processing system that detects saturated pixels of the first image, determines pixels of the second image corresponding to the saturated pixels of the first image, and generates a combined image based on non-saturated pixels of the first image and the pixels of the second image. The IR imaging modules may be a microbolometer focal plane array (FPA) configured for high-gain, and a microbolometer FPA configured for low-gain. The IR imaging modules may be a photon detector FPA and a microbolometer FPA.

Abstract: Techniques to set a frame rate and associated device manufacturing are disclosed. In one example, an imaging device includes a detector array configured to detect electromagnetic radiation associated with a scene and provide image data frames according to a first frame rate. The imaging device further includes a readout circuit configured to provide the image data frames according to a frame rate for the readout circuit. The imaging device further includes a fuse configured to set the frame rate for the readout circuit. Related methods and systems are also provided.

Abstract: Techniques are disclosed for facilitating burst mode calibration sensing and image mode sensing. In one example, a device includes a detector array configured to detect electromagnetic radiation and provide image data frames according to a first frame rate. The device further includes a logic circuit configured to determine whether a threshold delay has elapsed. The device further includes a frame output circuit configured to: provide, based at least on the threshold delay having elapsed, the image data frames according to the first frame rate; and provide, based at least on the threshold delay not having elapsed, the image data frames according to a second frame rate lower than the first frame rate. Related methods and systems are also provided.

Abstract: Various embodiments of the present disclosure may include an imaging system that allows for the transfer of high dynamic range (HDR) radiometric thermal images over a low bitrate interface. The image system may capture HDR images and output the HDR images over a communications interface to be processed. The HDR images may be converted to low dynamic range (LDR) images by a transfer function in order to be sent over the low bitrate interface. An inverse transfer function may also be sent along with the LDR image. Once the LDR image has been sent over the low bitrate interface, the LDR image may be converted to a reconstructed image using the inverse transfer function.

Abstract: Various embodiments of the present disclosure may include an imaging system that allows for the transfer of high dynamic range (HDR) radiometric thermal images over a low bitrate interface. The image system may capture HDR images and output the HDR images over a communications interface to be processed. The HDR images may be converted to low dynamic range (LDR) images by a transfer function in order to be sent over the low bitrate interface. An inverse transfer function may also be sent along with the LDR image. Once the LDR image has been sent over the low bitrate interface, the LDR image may be converted to a reconstructed image using the inverse transfer function.