摘要:
A system and method for focusing an image capture device are disclosed. One embodiment is a method comprising moving an autofocus window in response to detected movement of the image capture device.
摘要:
A photography system includes a digital camera and a remote control. The remote control emits a light that the photographer can use to designate a subject to be photographed by pointing the remote control at the subject, casting a light spot on the subject. In a preferred embodiment, the light is generated by a laser pointer included in the remote control. The camera selects a region to photograph from its field of view, based on the location or motion of the light spot. The camera may optionally select a region that is centered on the light spot. The photographer may optionally specify the size of the region to be selected. The camera may optionally adjust the size of the selected region to assist in photographic composition. The camera may optionally be capable of making video recordings.
摘要:
A camera includes a light transmitter configured to transmit light pulses at a first rate, a light receiver configured to receive return signals corresponding to the light pulses transmitted by the light transmitter, and a sampler configured to sample electrical signals corresponding to the return signals received by the light receiver, wherein the sampler is configured to sample the electrical signals at a second rate that is lower than the first rate.
摘要:
Autofocus methods and digital cameras employing a holographic element or hologram. The holographic element generates one or more displaced images that are processed to generate a bipolar contrast signal that provides for improved autofocus performance of the digital camera.
摘要:
A method of treating a lamp tube having a first end and a second end comprising introducing a first quantity of a luminescent substance into the first end of the lamp tube and introducing a second quantity of a luminescent substance into the second end of the lamp tube is provided. An illumination source comprising a linear tube having a first end and a second end and an inner surface having a luminescent substance distributed thereon, a longitudinal distribution of the luminescent substance having a minimum at a first point of the inner surface and a luminescent substance density greater than the minimum at each of a second and third point of the inner surface, the first point longitudinally located between the second and third points, is provided.
摘要:
A passive transparent media adapter magnetically couples to a scan system. The transparent media adapter captures light from an existing scan module and transfers the light to backlight transparent media so that it can be imaged by the scanner module. The transparent media adapter has no active electronics or illumination so does not require control or power to operate. The magnetic coupling allows a significant amount of existing system illumination to be focused into a narrow backlight region that moves in sync with the scan module.
摘要:
An object plane detection system comprises a light source adapted to illuminate a media object to generate an image area on a photosensitive sensor. The system also comprises a detection module adapted to determine a location of an object plane corresponding to the media object based on a size of the image area.
摘要:
In accordance with an embodiment of the present invention, an image capture device comprises a first scanning module operable to scan a first side of an object and a second scanning module operable to scan a second side of the object, the first and second scanning modules translatable along their respective displacement paths.
摘要:
In accordance with an embodiment of the present invention, a method for improving a digital image of an object comprises detecting the presence of ambient light and automatically correcting the digital image scanned by an image capture device to compensate for illumination noise in the digital image caused by the ambient light.
摘要:
In an image scanner, multiple exposures are used for each scan line, and only part of the pixels for each scan line are used for each exposure. For example, with two exposures, half the pixels may be used for the first exposure, and half for the second exposure. For each exposure, half of the charges are shifted out rapidly and discarded, without waiting for the A/D conversion time. As a result, for each exposure, the time required to empty the charge shift register is greatly reduced, reducing the thermal noise for all pixels.