Patent classifications
H04N25/587
Image sensors with high dynamic range and flicker mitigation
An imaging device may have an array of image sensor pixels. Each image sensor pixel of the array of image sensor pixels may have first and second photodiodes with different sensitivities. The photodiode having the lower sensitivity may be coupled to a storage diode and may alternately discard charge and transfer charge to the storage diode during an integration time for flicker mitigation. The length of time for which charge is discarded in each shutter cycle for flicker mitigation may be selected to adjust dynamic range of the imaging pixel. Upon conclusion of the integration time, charge from the storage diode may be sampled in a high conversion gain readout. Overflow charge from a dual conversion gain capacitor may then be sampled in a low conversion gain readout. Charge from the photodiode having higher sensitivity may finally be sampled in a high conversion gain readout.
Imaging device for high-speed read out, method of driving the same, and electronic instrument
The present technology relates to an imaging device, a method of driving the same, and an electronic instrument capable of improving functions by using high-speed readout in a period shorter than the output cycle of an image. An imaging device includes a pixel array unit in which pixels are arranged in a matrix, and a control unit that controls image readout by the pixel array unit. The control unit causes the pixel array unit to perform image readout twice or more within a cycle of outputting one image to the outside. The present technology can be applied to an imaging device or the like including a memory area, for example.
System and method for frame capturing and processing
Systems and methods are provided that capture and process frames of frame data. An image sensor captures frames of frame data representative of light incident upon the image sensor using a rolling shutter and outputs the frames of frame data. The image sensor captures at least one of the frames over a frame capture interval and then waits over a blanking interval before capturing another frame. A buffer receives and stores the frames output by the image sensor. An image signal processor retrieves the frames from the buffer and processes the frames over successive frame processing intervals to generate a video having a time interval per frame greater than the frame capture interval. At least one of the successive frame processing intervals is greater than the frame capture interval and is less than or equal to a sum of the frame capture interval and the blanking interval.
Image sensor post processing
In one example, an apparatus is provided. The apparatus comprises an image sensor configured to generate a first raw output to represent a first intensity of incident light based on a first relationship, and to generate a second raw output to represent a second intensity of incident light based on a second relationship. The apparatus further comprises a post processor configured to: generate a first post-processed output based on the first raw output and based on the first relationship such that the first post-processed output is linearly related to the first intensity based on a third relationship, and to generate a second post-processed output based on the second raw output and based on the second relationship such that the second post-processed output is linearly related to the second intensity based on the third relationship.
IMAGING ELEMENT, IMAGING APPARATUS, OPERATION METHOD OF IMAGING ELEMENT, AND PROGRAM
An imaging element incorporates a reading portion, a storage portion, a processing portion, and an output portion. The reading portion reads out image data obtained by imaging from a photoelectric conversion element at a first frame rate. The storage portion stores the image data read out from the photoelectric conversion element. The processing portion processes the image data. The output portion outputs the image data processed by the processing portion at a second frame rate. The processing portion detects first image data indicating a specific image from the image data stored in the storage portion. The output portion outputs second image data based on image data different from the first image data detected by the processing portion in the image data of a plurality of frames. The second frame rate is a frame rate lower than the first frame rate.
IMAGING DEVICE AND IMAGE PROCESSING METHOD
An imaging device includes an imaging unit including a plurality of pixels, respectively including photoelectric converters and charge accumulation nodes that accumulate signal charge. The imaging unit outputs image data based on signals corresponding to the signal charge accumulated in the charge accumulators. The imaging device includes an image processing unit that processes the image data output by the imaging unit. The imaging unit sequentially outputs a plurality of pieces of image data in one frame period by performing readout nondestructively. The image processing unit generates difference image data by determining a difference between two pieces of image data, selects output image data from initial image data and the difference image data, and combines the output image data and normal readout image data included in the plurality of pieces of image data, to generate combination-result image data.
IMAGING DEVICE AND IMAGE PROCESSING METHOD
An imaging device includes an imaging unit including a plurality of pixels, respectively including photoelectric converters and charge accumulation nodes that accumulate signal charge. The imaging unit outputs image data based on signals corresponding to the signal charge accumulated in the charge accumulators. The imaging device includes an image processing unit that processes the image data output by the imaging unit. The imaging unit sequentially outputs a plurality of pieces of image data in one frame period by performing readout nondestructively. The image processing unit generates difference image data by determining a difference between two pieces of image data, selects output image data from initial image data and the difference image data, and combines the output image data and normal readout image data included in the plurality of pieces of image data, to generate combination-result image data.
IMAGE SENSOR AND IMAGE SENSING METHOD
An image sensor and an image sensing method are provided. The image sensor includes a photodiode, a first storage circuit, a first readout circuit, a second storage circuit, and a second readout circuit. When the image sensor is operated in a dynamic vision sensing mode, the first storage circuit stores a first dynamic vision sensing signal provided by the photodiode during a first exposure period of a first frame period, and the second storage circuit stores a second dynamic vision sensing signal provided by the photodiode during a second exposure period of the first frame period. The first readout circuit and the second readout circuit output a first readout signal and a second readout signal to a first input terminal and a second input terminal of a differential amplifier at the same time according to the first dynamic vision sensing signal and the second dynamic vision sensing signal.
SOLID STATE IMAGE SENSOR AND ELECTRONIC EQUIPMENT
The present disclosure relates to a solid state image sensor and electronic equipment that enable degradation in image quality of a captured image to be suppressed even if any pixel in a pixel array is configured as a functional pixel for obtaining desired information in order to obtain information different from a normal image. In a plurality of pixels constituting subblocks provided in an RGB Bayer array constituting a block which is a set of color units, normal pixels that capture a normal image are arranged longitudinally and laterally symmetrically within the subblock, and functional pixels for obtaining desired information other than capturing an image are arranged at the remaining positions. The present disclosure can be applied to a solid state image sensor.
Imaging device that generates multiple-exposure image data
An imaging device including pixels and processing circuitry, where the pixels capture a first image in a first exposure period within a frame period and capture a second image in a second exposure period within the frame period to generate multiple-exposure image data that include the first image and the second image in a multiplexed state, the second exposure period being different from the first exposure period, the second image being different from the first image in brightness or color, and the processing circuitry detects an image of a moving subject from the multiple-exposure image data.