Abstract:
A method for setting parameters values of a video source device comprising obtaining a value of an image characteristic for a current image generated by the video source device set with initial parameters values; determining a satisfaction level for the image characteristic of the current image based on the obtained value, the satisfaction level representing a probability to fulfil a task; obtaining a set of candidates, a candidate being defined as a set of parameters values; for each candidate, predicting an evolution of the satisfaction level for the image characteristic relatively to the satisfaction level determined while the video source device is set with the initial parameters values; selecting a candidate based on its predicted evolution of the satisfaction level; setting the parameters values of the video source device using the set of parameters values of the selected candidate.
Abstract:
An exposure control device of a vehicle-mounted camera comprises an illuminance level determination unit, a plurality of timers, a timer operating unit, and an exposure level determination unit. The illuminance level determination unit determines that an illumination level of an external light illuminance corresponds to one of a plurality of illuminance levels. The timers each provided for a corresponding one of a plurality of change modes, the change modes being defined among the plurality of illuminance levels, or among a plurality of exposure levels for an exposure of a vehicular camera. The timer operating unit operates each of the timers in accordance with a state of change of the illuminance level of the external light illuminance. The exposure level determination unit determines one of the exposure levels for the exposure of the vehicular camera based on a count state of each of the timers.
Abstract:
To increase the accuracy of adjusting the main light emission. An amount of main light emission is adjusted on the basis of an estimated pre-light-emitted subject distance or information corresponding to the estimated pre-light-emitted subject distance and an estimated lens-focused subject distance. The estimated pre-light-emitted subject distance and the information corresponding to the estimated pre-light-emitted subject distance are obtained by pre-light-emission processing. The estimated lens-focused subject distance is obtained from focus information through a lens. In a case of bounce light emission, in a case where the estimated pre-light-emitted subject distance is smaller than the estimated lens-focused subject distance, a distance made closer to the estimated lens-focused subject distance from the estimated pre-light-emitted subject distance by a predetermined amount is set as an estimated subject distance for adjusting the main light emission.
Abstract:
When information associated with an object distance cannot be acquired, an image capture apparatus sets a condition required to determine a reference area used to determine weighting coefficients for respective photometry areas from a plurality of photometry areas, based on photometric values of the plurality of photometry areas obtained by making preliminary light emission.
Abstract:
Disclosed are a focus detecting apparatus capable detection in various light illumination conditions and an image acquiring apparatus having the same. The focus detecting apparatus may include a mark disposed on a primary image plane. A pair of images of the mark is detected by a sensor, the distance between which images is used to determine the main wavelength of the light received from a subject. The main wavelength is used in determining the chromatic aberration correction by which the defocus amount may be adjusted.
Abstract:
There is disclosed a photographic system, wherein a user designates photographic conditions of a digital still camera through a graphic user interface displayed on a monitor of a personal computer. The personal computer derives second photographic conditions from the photographic conditions designated by the user, and sets up the digital still camera with the second photographic conditions. Data of a still image taken under the second photographic conditions are sent from the digital still camera to the personal computer, to be processed for gradation compression and gradation conversion. The processed still image has similar gradation to that intended by the user in most brightness range, while white-saturation in a high brightness range and black-saturation in a low brightness range are reduced.
Abstract:
An image pickup apparatus which makes it possible to obtain a suitable exposure value even if the brightness of the subject changes just before photography preparations and is capable of achieving both of acceleration of photography preparations and high precision exposure control. A ranging control section 42 carries out focus detection control on a subject image in a plurality of control modes. An exposure control section 40 repeatedly carries out feedback exposure control of the subject image so as to maintain proper brightness of an image obtained from an image pickup device 14. A system control circuit 50 controls the exposure control section 40 so as to carry out the feedback exposure control before execution of the focus detection control according to a selected one of the control modes of the raging control section.
Abstract:
An image capturing apparatus having a light emission section for emitting flash and to which a close-up lens is mounted. The image capturing apparatus further includes a detecting section which detects that the close-up lens is mounted to the image capturing apparatus, and a controller which switches a flash shooting control of the light emission section from a dimmer control to a flashmatic control when the detecting section detects that the close-up lens is mounted to the image capturing apparatus.
Abstract:
An image-taking apparatus, which can automatically adjust parameters relating to image-taking regardless of variations in manufacturing errors and adjustment errors, is disclosed. The image-taking apparatus takes images by using an image pickup element. The image-taking apparatus successively shifts a parameter relating to image-taking so as to include a reference value, and takes a plurality of images with the parameters different from each other. Furthermore, the image-taking apparatus stores information on the parameter corresponding to an image selected by a user among the plurality of images in a memory, and determined the parameter to be used for image-taking on the basis of information stored in the memory.
Abstract:
An imaging apparatus of the present invention includes an optical lens unit of a photographic optical system; an imaging device for converting light received through the optical lens to electrical signals; a zooming device for changing a focal length of the photographic optical system; a zooming position detector for detecting a current zooming position; an A/D converter for converting analog image signals outputted from the imaging device to digital image signals; and a gradation sequence converter which converts a gradation sequence characteristic of the digital image signals by referring to a gradation sequence conversion table for converting the gradation sequence characteristic, wherein converting amounts of the gradation sequence conversion table are changed based on a current zooming position detected by the zooming position detector.
Abstract translation:本发明的成像装置包括摄影光学系统的光学透镜单元; 用于将通过光学透镜接收的光转换成电信号的成像装置; 用于改变摄影光学系统的焦距的变焦装置; 用于检测当前变焦位置的变焦位置检测器; A / D转换器,用于将从成像装置输出的模拟图像信号转换为数字图像信号; 以及灰度序列转换器,其通过参考用于转换灰度序列特性的灰度序列转换表来转换数字图像信号的灰度序列特性,其中灰度级序转换表的转换量基于由 变焦位置检测器。