摘要:
A digital imaging device automatically detects that a subject is too close to the device for acceptable focus to be achieved and informs the user, takes automatic corrective action, or both.
摘要:
A method and apparatus for detecting surface defects and artifacts on a transmissive image in an optical image scanner and correcting the resulting scanned image. In one scan, the image is scanned normally. Surface defects and artifacts such as dust, scratches and finger prints are detected by providing a separate scan using infrared light or by measuring light (white or infrared) that is scattered or diffracted by the defects and artifacts. Separate optical paths for illumination may be used, or separate optical paths for intensity measurement may be used. Image processing may then be used to correct areas in the normal scan corresponding to defects identified in the separate scan.
摘要:
When using a strobe in capturing a digital image is determined to be imminent, a pre-capture image may be saved from which iris-color information can be derived. The iris-color information derived from the pre-capture image may be used to improve red-eye correction of the captured digital image.
摘要:
A digital camera takes interleaved photographs of two different kinds. In one example embodiment, the first kind of photograph is taken using a first set of pixels of the camera's electronic array light sensor and has a short exposure time. The second kind of photograph is taken using a second set of pixels and has a long exposure time. More than one of the short-exposure-time photographs is taken while each long-exposure-time photograph is exposed. The two kinds of photographs are used for different purposes. For example, one kind may be used for performing automatic focusing while the other kind is used for displaying in a live view display. In this way, live view may continue while automatic focusing is performed. In another embodiment, one kind of photograph is used for providing a live view display, and the other is used in selecting exposure settings for a final photograph.
摘要:
A system and method for generating multiple processed images from a single captured image generated by an electronic imaging device. In one embodiment, a digital camera includes multiple sets of operating parameters which may be advantageously configured according to the demands of particular photographic environments. For each image captured by a digital camera as raw data, the data is processed according to each parameter set prior to compression, storage in temporary memory, and ultimate upload onto a computer or other permanent storage device.
摘要:
An apparatus and method of processing images in a digital camera and improving the quality of images produced by camera processing software. In low-light digital camera photography, a dark frame image is subtracted from an original picture image to form a resulting image. The resulting image formed from the dark frame subtraction is evaluated for negative and invalid pixel values. Each negative and invalid pixel value is replaced using a pixel replacement algorithm with appropriate positive values.
摘要:
The shutter of a digital imaging device may be calibrated by comparing a characteristic of two separate exposures obtained from a single field of the device's imaging sensor during a single exposure cycle. Calibrating the shutter in this manner facilitates the accuracy of even very short exposure times.
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 reflector (R) having an improved neck section that increases the useful light output of the lamp is disclosed. The reflector lamp comprises a concave reflector having a primary reflective surface with a parabolic shape, one or more intermediate reflective surfaces with a parabolic shape substantially confocal with the primary reflective surface, and an improved neck section comprising a reducing section, a first substantially straight cylindrical section, an expanding section and a second substantially straight cylindrical section.
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.