Abstract: A method and apparatus for reducing space and pixel circuit complexity by using a 4-way shared vertically aligned pixels in a same column. The at least four pixels in the pixel circuit share a reset transistor and a source follower transistor, can have a plurality of same colored pixels and a plurality of colors, but do not include a row select transistor.
Abstract: A method includes specifying an image area which is contained in the subject-present image taken and in which nonflatness is less than or equal to a predetermined value, determining whether or not a range of the specified image area in the subject-present image in which the nonflatness is less than or equal to a predetermined value is greater than or equal to a predetermined range, generating an extraction background image used to extract a subject area in the subject-present image containing the subject, from the image area when the range of the image area in which the nonflatness is less than or equal to a predetermined value is determined to be greater than or equal to the predetermined range, and extracting the subject area from the subject-present image based on information on a difference between each pixel in the extraction background image and a corresponding pixel in the subject-present image.
Abstract: An imaging apparatus includes an imaging unit operable to capture a subject image via an optical system and generate image data, a regulating unit operable to regulate an exposure amount for the imaging unit; a shake detector operable to detect a shake of the imaging apparatus; an operation unit capable of being in a first operating state and a second operating state; and a controller operable to control the recording unit to record the image data generated by the imaging unit in the recording medium, when the operation unit is in the first operating state. The controller determines whether or not the operation unit is in the second operating state before the first operating state, and regulates an exposure time of the regulating unit based on the determination result and the shake of the imaging apparatus detected by the shake detector.
July 23, 2010
Date of Patent:
January 1, 2013
Hiroyuki Kojima, Toshihito Egami, Eiji Anno
Abstract: An image processing apparatus, including a region setting unit for setting regions on a processing target image in which each pixel of the image is included according to a level of each pixel, a low frequency image generation unit for generating a low frequency image of the processing target image, a gain calculation unit for calculating a gain for each pixel of the processing target image such that the lower the level the greater the gain, wherein the unit calculates the gain such that pixels in each of the regions in which each pixel of the processing target image is included have substantially the same gain based on a region setting result and a level of each pixel of the low frequency image, and a processing unit for generating a processed image by performing dynamic range compression on the processing target image based on the gain.
Abstract: An imaging device is disclosed. The device includes: a unit pixel that outputs an analog electric signal in accordance with a signal charge; a local voltage supply circuit that generates a local voltage different from an operation voltage; a reference signal generation section that generates a reference signal based on the local voltage provided by the local voltage supply circuit; and a processing section that converts, by referring to the reference signal generated by the reference signal generation section, the analog signal provided by the unit pixel into a digital signal. In the imaging device, the reference signal generation section keeps constant a load current of the local voltage supply circuit in an operating state.
Abstract: A device comprises a photoelectric conversion portion including a light receiving surface, and a condensing structure which condenses light to the photoelectric conversion portion, wherein in the condensing structure, a first insulating film and a second insulating film having a refractive index higher than that of the first insulating film are laid out in a plane perpendicular to a normal passing through a center of the light receiving surface such that a density of the second insulating film is higher in a central portion of the plane than in a peripheral portion of the plane, and a layout pattern of the first insulating film and the second insulating film in the plane includes a portion having a dimension not more than a maximum wavelength of a visible light range.
Abstract: An image pickup apparatus that can reduce power consumption of the image pickup apparatus, and take high-definition moving images at high speed without bringing about decreases in recordable time and the number of still images taken. An image pickup processing unit is operated in a plurality of operation modes, and has an image pickup device and a plurality of processing units that process image pickup signals outputted from the image pickup device. An interval control circuit causes the image pickup processing unit to switch between a standby ON state and a standby OFF state in predetermined timing. A control signal is outputted to the interval control unit according to an operation mode of the image pickup processing unit. When the image pickup processing unit lies in a predetermined operation mode, a control signal for causing the interval control circuit to perform the switching is outputted to the interval control circuit.
Abstract: A shading correcting device includes a correction-coefficient interpolation unit that calculates a color shading correction coefficient used at a position of a pixel at which the color shading correction coefficient is not set among pixels in an image signal by an interpolation process using a color shading correction coefficient set at a predetermined position. A color shading correction coefficient sent to the correction-coefficient interpolation unit is a color shading correction coefficient that is for a first color and corresponds to a pixel value of a second color adjacent to a pixel of the first color.
Abstract: An imaging apparatus includes: receiving means for receiving selection input for an imaging mode; discriminating means for discriminating, when the selection input is received through the receiving means, a selected imaging mode on the basis of the received selection input; and scanning controlling means for causing, when it is discriminated by the discriminating means that a simple imaging mode for limiting operation input and allowing a user to appropriately take an image of a subject is selected, the imaging apparatus to execute scanning processing for specifying a position of the subject, which is performed to set focus on the subject, in a maximum range from a near scene to a distant scene.
Abstract: An image processing apparatus includes an image processing circuit. The image processing circuit is configured by an image processing portion for performing an image process on a first image so as to generate a third image, an image composing portion for composing the first image and the third image, and an addition-ratio calculating portion for calculating a degree of composition of a composing process between the first image and the third image by the image composing portion based on a difference signal from a difference calculating portion.
Abstract: A data transfer circuit includes: plural transfer lines transferring data; plural data output units connected to end portions of the respective transfer lines, detecting and outputting data transferred through the transfer lines with drive performance in accordance with a control signal; plural data transmission units arranged in parallel, transferring data to the corresponding transfer lines in response to selection signals; a selection control unit generating selection signals and outputting the selection signals to the corresponding data transmission units; and a control unit generating the control signal for controlling drive performance of the data output units to adjust data transfer delay and outputting the control signal to the respective output units. The transfer lines are arranged in the arrangement direction of the data transmission units and connected to the corresponding data output units. The control unit generates the control signal in accordance with the length of the data transfer distance.
Abstract: An imaging apparatus includes an imaging unit to acquire image data, an integration unit to calculate a white balance integration value, a first calculation unit to calculate a still image white balance control value, a second calculation unit to calculate a histogram white balance control value, and a histogram processing unit. The second calculation unit calculates the histogram white balance control value by converting a white balance control value which is used in white balance processing on the image data acquired by the imaging unit in an electronic view finder (EVF) mode to the still image white balance control value, and the histogram processing unit adjusts color balance of the image data acquired by the imaging unit using the calculated histogram white balance control value and performs the histogram processing in parallel with calculation of the white balance integration value.
Abstract: An image capturing apparatus including an image capturing unit configured to capture an image, and a generation unit configured to generate an exposure period map by assigning, to each of the plurality of image sensor pixels, exposure control information to control a charge accumulation time, based on preliminary captured image data obtained by preliminary image capturing using the image capturing unit. The exposure control information includes first exposure control information corresponding to a first accumulation time and second exposure control information corresponding to an accumulation time longer than the first exposure control information A correction unit expands a first region having the first exposure control information on the exposure period map, and a control unit controls the accumulation time for each of the plurality of image sensor pixels in accordance with the exposure period map corrected by the correction unit.
Abstract: A solid-state imaging device includes a layout in which one sharing unit includes an array of photodiodes of 2 pixels by 4×n pixels (where, n is a positive integer), respectively, in horizontal and vertical directions.
Abstract: An image pickup apparatus includes: an image pickup substrate on which an image pickup device is mounted on an object side; an optical unit having a lens for imaging an object light on the image pickup device; a blade member adjusting an amount of the object light entering into the lens; a drive unit having a motor driving the blade member; and a motor substrate supplying the motor with a drive power. The optical unit is provided in the image pickup substrate. The drive unit is provided in the optical unit so as to be spaced apart from the image pickup substrate. The motor substrate is provided in the drive unit so as to face the image pickup substrate. The conductive member electrically connecting the image pickup substrate with the motor substrate is disposed between the image pickup substrate and the motor substrate.
Abstract: When driven in an all-pixel read mode, a CCD outputs, with each horizontal sync timing signal, captured image signals including signal charges arranged in a different order from that in which the pixels are actually arranged on a photosensitive surface of the CCD. During this time, the respective pixel signals are digitized sequentially by an A/D converter to corresponding image data, which are then temporarily stored in units of a line in a line buffer via a data distributor. In this case, an address generator generates, for the respective image data, write addresses to store the respective image data in the line buffer in the same order as the pixels of the photosensitive surface are actually arranged. In accordance with these write addresses, the data distributor distributes the respective image data to appropriate addresses in the line buffer, thereby storing the image data there.
Abstract: A solid state imaging device includes: an AD conversion section having a comparing section, which receives a reference signal from a predetermined reference signal generating section and which compares the reference signal with an analog signal to be processed, and a counter section, which receives a count clock for AD conversion and performs a count operation on the basis of a comparison result of the comparing section, and acquiring digital data of the signal on the basis of output data of the counter section; a count operation period control section controlling an operation period of the counter section on the basis of the comparison result; and a driving control section controlling the reference signal generating section and the AD conversion section such that for the signal to be processed, data of upper N?M bits is acquired in first processing and data of lower M bits is acquired in second processing.
Abstract: Embodiments of circuits and methods for suppressing row-wise noise in the analog domain in an image sensing device. In one embodiment, a pixel sampling circuit includes a readout circuit that is connected to a plurality of pixels to receive analog signals from the pixels. The pixel sampling circuit also includes a noise correction circuit that provides a reference signal to remove at least a portion of the noise in the analog signals received from the pixels before the analog signals are converted into digital signals.
Abstract: Disclosed is a digital still camera in which amount of exposure is decided appropriately even when there is a changeover from one shooting scene to another. When a shooting mode is set, a first shooting scene discrimination is performed before a shutter-release button is half-pushed. A first amount of exposure is calculated using a program diagram suited to the shooting scene that has been discriminated by the first shooting scene discrimination. Shooting for focusing control is performed at an exposure corresponding to the first amount of exposure, whereby image data is obtained. Focusing control is carried out based upon the image data obtained, and shooting is performed again. Second shooting scene discrimination is performed based upon the image data obtained by shooting. A second amount of exposure is calculated using a program diagram suited to the shooting scene that has been discriminated by the second shooting scene discrimination.
Abstract: The attenuation and other optical properties of a medium are exploited to measure a thickness of the medium between a sensor and a target surface. Disclosed herein are various mediums, arrangements of hardware, and processing techniques that can be used to capture these thickness measurements and obtain three-dimensional images of the target surface in a variety of imaging contexts. This includes general techniques for imaging interior/concave surfaces as well as exterior/convex surfaces, as well as specific adaptations of these techniques to imaging ear canals, human dentition, and so forth.
July 24, 2009
Date of Patent:
November 13, 2012
Massachusetts Institute of Technology
Douglas P. Hart, Federico Frigerio, Davide M. Marini