Patent classifications
H04N25/683
METHOD FOR CALIBRATING A PHOTODETECTOR ARRAY, A CALIBRATION DEVICE, AND AN ASSOCIATED IMAGING SYSTEM
A method for calibrating a photodetector array supplying a video stream includes: a determination step, wherein an offset table is determined for each current image of the video stream based on at least two corrections from among the following: a first correction from a comparison of the current image to a corresponding predetermined reference table; a second correction from a calculation of a column error of the current image; and a third correction from a high-pass temporal filtering of the video stream; and a calculation step, wherein a current value of an offset table, equal to a sum between a previous value of the offset table and a weighted sum of at least two corrections, is calculated, with each coefficient of the offset table being associated with a respective photodetector of the array.
ANOMALOUS PIXEL DETECTION SYSTEMS AND METHODS
Various techniques are disclosed to provide for detection of temporally anomalous flickering pixels. In one example, a method includes capturing, by a thermal imager of an imaging device, a plurality of thermal images in response to infrared radiation received from a uniform black body, wherein the thermal images comprise a plurality of pixels having associated pixel values. The method also includes determining, for each pixel, a standard deviation of the associated pixel values for the thermal images. The method also includes comparing the standard deviations with a threshold. The method also includes identifying a subset of the pixels as temporally anomalous pixels in response to the comparing. Additional methods, devices, and systems are also provided.
Processing received pixel values in an image processing system using pixel value subset groups
Data processing systems (e.g. image processing systems) and methods are provided for processing a stream of data values (e.g. pixel values). The image processing system comprises a processing module configured to: receive a plurality of pixel values; and implement processing of a particular pixel value by operating on a particular subset of the received pixel values, by: defining a set of one or more groups into which pixel values within the particular subset can be grouped; classifying each of the pixel values within the particular subset into one of the groups of the set of one or more groups based on the value of that pixel value; processing the particular pixel value using one or more of the pixel values of the particular subset in dependence on the classification of the pixel values of the particular subset into the one or more groups; and outputting the processed particular pixel value.
IMAGE SENSING DEVICE
Disclosed is an image sensing device including an image sensor suitable for generating image values corresponding to a captured image, and an image processor suitable for analyzing a texture of a target kernel of the captured image based on a first image value corresponding to a center of the target kernel and second image values corresponding to a periphery of the target kernel among it mage values of the target kernel.
Imaging device, imaging system, and imaging method
An imaging device according to the present disclosure includes: an imaging unit configured to perform an imaging operation; a data generator configured to generate first power supply voltage data corresponding to a first power supply voltage; and a flag generation section configured to generate a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.
Defective pixel management in charged particle microscopy
Disclosed herein are methods, apparatuses, systems, and computer-readable media related to defective pixel management in charged particle microscopy. For example, in some embodiments, a charged particle microscope support apparatus may include: first logic to identify a defective pixel region of a charged particle camera, wherein the charged particle camera cannot detect charged particle events in the defective pixel region; second logic to generate a first charged particle event indicator that identifies a first time and a first location of a first charged particle event outside the defective pixel region, wherein the first charged particle event is detected by the charged particle camera; third logic to generate a second charged particle event indicator that identifies a second time and a second location in the defective pixel region; and fourth logic to output data representative of the charged particle event indicators.
Electronic device, actuator control method, and program
Provided is an electronic device which includes an event-driven vision sensor that includes a sensor array having a sensor that generates an event signal when the sensor detects a change in intensity of incident light, an actuator that displaces a module including the vision sensor, and a control unit which transmits a control signal to the actuator and reflects a correction value based on the event signal generated when the actuator displaces the module in the control signal.
Imaging device and diagnosis method
An imaging device according to the present disclosure includes a plurality of pixels each including a first light-receiving element and a second light-receiving element, the plurality of pixels including a first pixel. The imaging device further includes a generating section that generates a first detection value on a basis of a light-receiving result by the first light-receiving element of each of the plurality of pixels, and generates a second detection value on a basis of a light-receiving result by the second light-receiving element of each of the plurality of pixels. The imaging device further includes a diagnosis section that performs a diagnosis processing on a basis of a detection ratio that is a ratio between the first detection value and the second detection value in the first pixel.
Imaging device, imaging system, and imaging method
Provided is an imaging device that includes an imaging unit that performs an imaging operation, a data generator that generates first power supply voltage data corresponding to a first power supply voltage and a flag generation section that generates a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.
Imaging apparatuses, systems, and moving imaging objects
An imaging arrangement comprising: a plurality of pixels arranged in a matrix; and a signal processing arrangement. A first and a second line of the matrix each comprise a light-receiving pixel and a reference pixel, the light-receiving pixels each receive incident light and output a light signal based on the incident light, and each reference pixel outputs a pixel signal for forming an address signal. The processing arrangement provides a first address signal and a second address signal, wherein: the first address signal indicates the position of the first line and comprises a signal value based on the pixel signal from the first line; and the second address signal indicates the position of the second line and comprises a signal value based on the pixel signal from the second line; and the signal value of the first address signal is different to the signal value of the second address signal.