Digital camera

About: Digital camera is a research topic. Over the lifetime, 12169 publications have been published within this topic receiving 137431 citations. The topic is also known as: digicam & digital still camera.

Pre- and post-shutter signal image capture and sort for digital camera

Abstract: A camera system includes an image sensor and a processing apparatus receiving image frames from the sensor before and after receipt of a user picture signal. The processing apparatus discards frames that do not meet a quality criterion such as under-exposed frames. Also, the processing apparatus compresses only a subset of remaining frames, specifically, those that meet a compression amount threshold. The remaining frames are presented to a user, who can select a representative frame as the “picture” that was taken.

Progressive watermark decoding on a distributed computing platform

Abstract: The disclosure describes a method of progressively decoding a digital watermark on a distributed computing platform. A client device equipped with a digital camera, such as a PDA or cell phone, captures a digital image of a watermarked object, and pre-filters the image to isolate a portion of the image data suspected of containing a digital watermark. The pre-filter de-correlates a portion of the image data suspected of containing a digital watermark from the remaining host image signal using a predictive filter. The client then quantizes the filtered data and progressively transmits the quantized data to a watermark decoder. The progressive transmitter sends image data as necessary to achieve a valid decoding operation. To reduce bandwidth requirements, the transmitter starts with the most highly quantized version of the filtered image, and sends lesser quantized versions until the watermark decoder completes a successful decoding operation.

Producing panoramic digital images by digital camera systems

Abstract: A panoramic digital image is produced by providing a digital camera having a memory and which is operable in a first mode for producing individual still digital images, and in a second mode for capturing a series of overlapping digital images to be used in constructing the panoramic digital image. The digital camera is mounted on a stand, rotated on the stand through a series of predetermined positions, and operated in the second mode to capture the series of overlapping digital images. The series of overlapping digital images corresponding to the panoramic digital image is stored in a predetermined location in the memory, and processed to stitch such images together to produce the panoramic digital image.

Image input apparatus, program executed by computer, and method for preparing document with image

Abstract: A digital camera inputs an image capture guide list including at least one of image titles as targets to be recorded, and displays the image title(s) included in the image capture guide list on its display part. User takes a picture or pictures while checking the image title(s) in the image capture guide list.

Improvements on source camera-model identification based on cfa interpolation

Abstract: The idea of using traces of interpolation algorithms, deployed by a digital camera, as an identifier in the source camera-model identification problem has been initially studied in [2]. In this work, we improve our previous approach by incorporating methods to better detect the interpolation artifacts in smooth image parts. To identify the source cameramodel of a digital image, new features that can detect traces of low-order interpolation are introduced and used in conjunction with a support vector machine based multi-class classifier. Performance results due to newly added features are obtained considering source identification among two and three digital cameras. Also, these results are combined with those of [2] to further improve our methodology.