Abstract:
This solution relates to a camera system including an enhanced timer functionality in a camera module. The enhanced timer functionality includes defining a first synchronization point triggering a first set of exposing functionalities by a sensor internal signal as a response to a first command, and controlling the exposure internally according to said first synchronization point.
Abstract:
An image pickup device may include an image pickup unit that includes two-dimensionally arranged pixels, the image pickup unit generating image signals of a plurality of series based on light incident to the pixels, the image pickup unit outputting the image signals of the plurality of series in parallel, a memory that stores the image signals output from the image pickup unit, a reading unit that sequentially reads the image signals from the memory, the reading unit sequentially outputting the image signals of the pixels as an image signal of one series in the same order as an alignment order of the pixels in a line direction, and an evaluation value calculating unit that processes the image signals output from the reading unit, the evaluation value calculating unit calculating an evaluation value necessary for controlling image pickup.
Abstract:
A camera body is provided, to which an interchangeable lens is mountable, the interchangeable lens including a diaphragm and capable of sending driving speed information of the diaphragm. The camera body has a receiving unit operable to receive the driving speed information of the diaphragm from the interchangeable lens, an imaging unit operable to capture a subject image formed by the interchangeable lens to generate image data, a controller operable to set an imaging condition for the imaging unit, and a sending unit operable to send a control signal for changing brightness information of the interchangeable lens to the interchangeable lens. The controller sets the imaging condition for a period from a start to an end of a driving of the diaphragm according to the received driving speed information of the diaphragm when the sending unit sends the control signal to the interchangeable lens.
Abstract:
An imaging device for recognition (100) includes an image pickup unit (101) that sequentially generates a plurality of images by shooting an object, a face recognition unit (105) that recognizes, in each of the plurality of images, an object region in which the object is located in the image, a face tracking unit (106) that tracks the object region across the plurality of images, an area calculation unit (109) that calculates an area of the object region, and an exposure control unit (102) that sets a first exposure time for the image pickup unit (101) in the case where the area is smaller than a first threshold, and sets a second exposure time longer than the first exposure time in the case where the area is equal to or larger than the first threshold.
Abstract:
An image sensor includes a plurality of pixels arranged in a matrix and has an electronic focal plane shutter function for providing a predetermined reset signal to the pixels on a pixel line to pixel line basis to perform an exposure start operation. A mechanical focal plane shutter is disposed immediately before the image sensor. A control unit causes the image sensor to perform the exposure start operation using the electronic focal plane shutter function a predetermined period of time after a curtain group of the mechanical focal plane shutter is open and causes the mechanical focal plane shutter to perform an exposure end operation when a shutter speed is set to low. The control unit causes the mechanical focal plane shutter to perform the exposure start operation and the exposure end operation when the shutter speed is set to high.
Abstract:
A flicker is caused by a light lit on a commercial AC power. An iris priority camera cannot fix a shutter thereof to a shutter speed at which no flicker occurs. Each of images picked up by a surveillance camera provides precious information. Therefore, even when the shutter is set to a high shutter speed, images devoid of an afterimage or a blue have to be picked up even from a subject which makes movements. When a decision is made that a flicker is present, the timings of applying a discharging pulse and a charge readout pulse respectively are varied depending on a field in order to implement shutter speed control in a CCD sensor, so that a camera can be exposed to a portion of light falling into the same phase thereof within a luminescence period of a lighting during each field. The CCD sensor can be exposed to the light without occurrence of a flicker even when a light source emits light while being repeatedly lit and extinguished.
Abstract:
An image pickup apparatus which includes a camera shake correction mechanism and determines exposure conditions including at least a shutter speed in response to brightness of an image pickup object, including acquisition means, decision means, and setting means. The acquisition means is configured to acquire a focal distance of a lens for converging an optical image of the image pickup object. The decision means is configured to decide a camera shake limit shutter speed corresponding to the acquired focal distance. The setting means is configured to set, where the camera shake correction mechanism is valid, a shutter speed lower than the camera shake limit shutter speed by an amount corresponding to a predetermined difference in exposure value to one end of a setting range of the shutter speed of the exposure condition.
Abstract:
A method of exposure control in an image pickup apparatus includes determining whether a zoom lens has been moved, determining whether an F value obtained from information about focal position of a focus lens linked to movement of the zoom lens has changed, estimating a variation in the focus luminance before and after a change in the F value from the F values before and after the change when the F value has been changed, changing the shutter speed determined according to a focus luminance before the change to a shutter speed determined according to the focus luminance after the change, based on the estimated variation in the focus luminance, and changing a frame rate determined according to the focus luminance before the change to a frame rate determined according to a focus luminance after the change according to the changed shutter speed.
Abstract:
An automatic exposure control apparatus employed by an image sensor module including a lens unit, an image sensing unit having a shutter, and an image signal processing unit, the apparatus including: a brightness calculator extracting average brightness of a image signal; a brightness adjustment determiner determining whether to fix or adjust a speed of the shutter based on the average brightness; an adjustment path controller controlling the speed of the shutter by using the brightness error; a digital filter filtering the brightness error; a shutter speed adjuster adjusting a present shutter speed value by using one of the brightness error and the filtered brightness; and a shutter speed controller controlling a speed of the shutter by using the adjusted shutter speed value.
Abstract:
Provided are a photographing apparatus and method which can obtain the same effect as in a weighted summation method by capturing a plurality of images of a subject while appropriately controlling exposure time for each of the images and adding up the images and can correct distortions in the images obtained using a typical exposure time division method. The photographing apparatus includes: an exposure compensation value calculation unit which calculates a plurality of exposure compensation values for a plurality of exposure operations respectively corresponding to a plurality of diaphragm values based on a predefined parameter; an exposure unit which respectively performs the exposure operations for exposure times determined based on the exposure compensation values; and an image synthesis unit which synthesizes a plurality of images respectively obtained by the exposure operations.