摘要:
The present invention provides a technique for reducing a period of time required for detection of a motion vector. With a method for detecting a motion vector between an input image and a reference image used for a reference of the input image, first, a two-dimensional search region having a predetermined pattern is determined, and matching is computed between a coding target block in the input image and multiple blocks represented by multiple search points included in the search region in parallel. In a case wherein the evaluated computation results exhibit optimum matching results, the motion vector is determined based upon the computation results. In a case wherein the optimum solution has not been obtained, the search region for the next matching is determined based upon the evaluation results, and search is repeated.
摘要:
An image data encoding apparatus encodes image data at a high speed while minimizing the deterioration of the image quality on a reproduced screen. The apparatus includes an encoding circuit, a code quantity counter and a control circuit. The control circuit compares a total code quantity with a reference code quantity. When the total code quantity exceeds the reference code quantity, the control circuit further compares an excessive quantity with a brought forward code quantity. The control circuit instructs an interruption of generation of the code image data by the encoding circuit when the excessive quantity is larger than the brought forward code quantity.
摘要:
A audio reproducing apparatus includes an audio decoder and a voice speed converting unit. The audio decoder decodes an audio data stream to produce an audio signal. The voice speed converting unit converts the audio signal in such a manner that when a bit rate is higher than a normal bit rate, a pitch of a reproduced sound interval is the same as the pitch of the sound interval in a normal playback mode and a voice speed in the reproduced sound interval approaches a voice speed in a sound interval in the normal playback mode. The voice speed converting unit further performs voice speed conversion on the audio signal in such a manner that when the bit rate is lower than the normal bit rate, the sound interval is not noticeably interrupted.
摘要:
When a reverse reproduction is instructed, an MPEG video stream is once decoded and is converted to image video signals by a first display circuit. Thereafter, the image video signals are again recoded by an image input circuit and an MPEG video encoder, so as to be overwritten in a storage area of a hard disk. An MPEG video decoder reads out this recoded data sequence in a reverse time-series manner and decodes it successively. Then the thus decoded data are converted to image video signals by a second display circuit, so as to be displayed on a display.
摘要:
In an image coding apparatus, a ROI setting unit sets a ROI region in an image. An entropy coding unit entropy-codes the image. A ROI information coding unit encodes information for specifying the ROI region. A codestream generator generates a codestream in a manner that the coded image and the coded information are explicitly included in the codestream. When a plurality of ROI regions are set in the image, the information may include a degree of priority.
摘要:
The moving images under reproduction are displayed in a main screen and a plurality of thumbnail images that serve as indexes by which to search for a desired scene are displayed. Moreover, the thus displayed thumbnail images are updated at a predetermined timing according as the moving images progress.
摘要:
In a digital camera, when snapshot shooting is instructed during recording of a moving image, a shot still image is temporarily pushed aside in a memory area for use in pushing aside (7a) in a frame buffer (7). A currently shooting motion image and a still image are displayed in parallel on a display (9), so that a user can confirm a content of a snapshot. The moving image continues to be recorded even during a push-aside operation. After a moving image processing is completed, the still image is processed by an image correcting circuit (4). The frame buffer (7) comprises a plurality of frame recording areas, and is shared on the occasions of a moving image processing and a still image processing. In a normal moving image processing, these areas are utilized in a cyclic manner, and when the still image is shot, any of areas will be utilized. Thereafter, the rest of areas are utilized in the cyclic manner for the moving images. The recording function for the moving image and still image is improved at low cost, it becomes easy to take a snapshot, and the merchandise size is not increased.
摘要:
A first acquisition unit acquires images from a first image pickup unit for picking up moving images for use in recording. A second acquisition unit acquires images from a second image pickup unit for picking up the image of a person taking the moving images. A decision unit determines whether or not the person taking the moving images is viewing a monitor for displaying the moving images for use in recording, based on the images acquired from the second acquisition unit. A control unit varies the status of an image pickup apparatus according to the decision results of the decision unit.
摘要:
In a digital camera, when snapshot shooting is instructed during recording of a moving image, a shot still image is temporarily pushed aside in a memory area for use in pushing aside (7a) in a frame buffer (7). A currently shooting motion image and a still image are displayed in parallel on a display (9), so that a user can confirm a content of a snapshot. The moving image continues to be recorded even during a push-aside operation. After a moving image processing is completed, the still image is processed by an image correcting circuit (4). The frame buffer (7) comprises a plurality of frame recording areas, and is shared on the occasions of a moving image processing and a still image processing. In a normal moving image processing, these areas are utilized in a cyclic manner, and when the still image is shot, any of areas will be utilized. Thereafter, the rest of areas are utilized in the cyclic manner for the moving images. The recording function for the moving image and still image is improved at low cost, it becomes easy to take a snapshot, and the merchandise size is not increased.
摘要:
In an image coding apparatus 100, a ROI setting unit sets a ROI region in an image. A ROI information coding unit 24 encodes information for specifying the ROI region by referring to difference information between frames. An entropy coding unit 14 entropy-codes the image. A codestream generator 16 generates a codestream in a manner that the coded image and the coded information for specifying a region of interest are included in the codestream.