Abstract:
A method for improving the dynamic range of a captured digital image, including acquiring at least one image from the live view image stream, wherein each acquired live view image has an effective exposure and a first resolution; capturing at least one still image at an effective exposure different than each of the acquired live view images, and at a resolution higher than the first resolution; and combining the at least one live view image and the at least one still image.
Abstract:
A method for reading out a high dynamic range image frame in an image sensor and a device using the same are provided. The image sensor comprises a pixel array with a plurality of pixels arranged in columns and rows. The device comprises a pixel array comprising a plurality of pixels arranged in columns and rows; a calculating unit, configured to calculate and determine a first integration time and a second integration time according to an output image frame information; and an integration time processing unit.
Abstract:
An image sensing device has an image cell (ICn) with a photo-sensitive element (FD), a detection node (C) and an output pin. Charges accumulated during a first period of time are transferred from the photo-sensitive element (FD) to the detection node (C), thereby obtaining a first voltage, and kept on the detection node (C) which is thus used as a memory. Some moments later, a first value corresponding to the first voltage is generated on the output pin, charges accumulated during a second period of time are transferred from the photo-sensitive element (FD) to the detection node (C), thereby obtaining a second voltage, and a second value is generated on the output pin corresponding to the second voltage. The signal thus generated is also proposed.
Abstract:
In a CMOS image pickup device in which the signal corresponding to the accumulated charge amount of each pixel is output to horizontal signal lines wired on a row basis, for example, two vertical selection transistors are provided every horizontal signal lines, and two vertical signal lines and two vertical scan circuits are provided every horizontal signal line, thereby separately outputting signals which are different in accumulation time and obtained by arbitrarily dividing 1 field into any number of parts on the basis of integer times of 1H.
Abstract:
An imaging system, comprising a pixel image sensor array disposed on a substrate and comprising a plurality of pixels, a multi-stage timer coupled to said pixel image sensor array for triggering exposures of said pixels, wherein the pixels are grouped into N subsets, and the timer triggers, for each subset, a sequence of at least two exposures of different capture duration of the pixels of said subset, wherein start times of the exposure sequences of the different subsets are temporally offset, at least one ADC coupled to said pixel image sensor array, which converts said exposures of said pixels to pixel digital values, a memory coupled to said at least one ADC to store said pixel digital values, and a logic circuit coupled to said memory to determine for each pixel of the image sensor array which of the corresponding stored pixel digital values to upload to a video frame.
Abstract:
A method and device for capturing a mixed structured-light image and regular image using an integrated image sensor are disclosed, where the structured-light image is captured using a shorter frame period than the regular image. In order to achieve a shorter frame period for the structured-light image, the structured-light image may correspond to an image captured with reduced dynamic range, reduced spatial resolution, or a combination of them. The capturing process comprises applying reset signals to a pixel array to reset rows of pixels of the pixel array, reading-out analog signals from the rows of pixels of the pixel array and converting the analog signals from the rows of pixels of the pixel array into digital outputs for the image using one or more analog-to-digital converters.
Abstract:
An imaging device whose dynamic range can be wide with a simple structure is provided. In a circuit configuration and an operation method of the imaging device, whether a charge detection portion provided in a pixel is saturated with electrons is determined and an operation mode is changed depending on the determination result. First imaging data is captured first, and is read out in the case where the charge detection portion is not saturated with electrons. In the case where the charge detection portion is saturated with electrons, the saturation of the charge detection portion is eliminated and second imaging data is captured and read out.
Abstract:
Multiple image data subframes corresponding to respective portions of an exposure interval are generated within a sensor device of an image system. Depending on whether the exposure interval exceeds one or more exposure time thresholds, data representative multiple image data subframes are output from the image sensor device in one of at least two formats, including a first format in which each of the subframes of image data is output in its entirety, and a second format in which a logical combination of at least two of the subframes of image data is output instead of the at least two of the subframes of image data such that the total volume of image data output from the image sensor device is reduced relative to the first format.