摘要:
The present invention relates to a video encoding device (10, 10′, 10″) and method for encoding video data and to a corresponding video decoding device (60, 60′) and method. To preserve PPG relevant information after encoding without requiring a large amount of additional data for the video encoder output stream, the proposed video encoding device comprises a selection unit (20, 20′) for selecting a region of interest (101) in input video data (100) providing a strong PPG signal, a first encoding unit (30,30′) for encoding said selected region of interest (101) of said input video data (100) according to a predetermined encoding scheme with a first setting of the encoding to preserve PPG-relevant information in the encoded region of interest, a second encoding unit (40, 40′) for encoding remaining parts (103) of said input video data (100) according to said predetermined encoding scheme with a second setting of the encoding, and an encoder combination unit (50) for combining the encoded region of interest (102) and the encoded remaining parts (104) of said input video data into an encoder output video stream (105).
摘要:
To allow better quality rendering of video on any display, a method is proposed of encoding, in addition to video data (VID), additional data (DD) comprising at least one change time instant (TMA—1) indicating a change in time of a characteristic luminance (CHRLUM) of the video data, which characteristic luminance summarizes the set of luminances of pixels in an image of the video data, the method comprising: —generating on the basis of the video data (VID) descriptive data (DED) regarding the characteristic luminance variation of the video, the descriptive data comprising at least one change time instant (TMA—1), and—encoding and outputting the descriptive data (DED) as additional data (DD).
摘要:
A method and apparatus for rendering a multimedia item with a plurality of modalities is provided. Parameter settings are determined for a plurality of modalities according to a user input request (step 206). The multimedia item is rendered with the determined Render menu of modes 202 modality parameter settings (step 208).
摘要:
Mirror device (1) comprises a display device (3) and a camera (2) to record an image. The device comprises means for determining (4, 41) the position of a body part. Said means put out a signal (S) indicative of the position of the body part with respect to the a display screen of a display device (3) for a viewer in front of the mirror device. In dependence of this signal (S) the view point from which the to be displayed image is recorded is changed.
摘要:
The present invention relates to a method of generating an image scaling curve, where local saliency is detected in a received image. The detected local saliency is then accumulated in the first direction. A final scaling curve is derived from the detected local saliency and the image is then possibly rescaled in a second direction by using the derived scaling curve, wherein the second direction is substantially orthogonal to the first direction.
摘要:
An image processing apparatus (100) comprises: receiving means for receiving a video signal representing input images; a film-detector unit (108) for detecting whether the input images have been captured by a film camera or by a video camera; and a sharpness enhancement unit (106) for calculating sharpness enhanced images on basis of the input images. The sharpness enhancement unit (106) is controlled by the film-detector unit (108), whereby the sharpness enhancement is larger if the film-detector unit (108) has detected that the input images have been captured by the film camera than if the film-detector unit (108) has detected that the input images have been captured by the video camera.
摘要:
This invention relates to a method, a computer program, a computer program product and a device for reducing motion blur of images shown on non-stroboscopic display devices, in which local areas p, of an image of a video signal are displayed during respective local display times t; that are less than or equal to a image period T, comprising determining (40) an amount X; of high spatial frequency content related to a local area p, of said image of said video signal, and adjusting (41) a local display time t, in dependence on said determined amount X; of high spatial frequency content, wherein said local display time t; is decreased with increasing determined amount X; of high spatial frequency content.
摘要:
The invention relates to a signal processing system comprising first electronic means for storing an input signal, second means for a real-time processing of the input signal thus stored, and third electronic means for storing the signal thus processed. This system is according to the invention, characterized in that said second processing means themselves comprise off-line signal enhancement means applied to said input signal and using available processing resources, not still used for real-time or on-line processing, for delivering an enhanced signal and storing it in said third means for storing the signal processed by the second processing means. The signal enhancement means may also comprise means for modifying said enhanced signal, said third electronic means for storing the processed signal being also able to store the enhanced signal thus modified, and the third electronic means for storing the signal processed may be provided for outputting the enhanced signal and/or the modified enhanced signal in real time.
摘要:
A method of estimating a particular motion vector (DR(x, n+α)) for a particular pixel, having a particular spatial position and being located at a temporal position (n+α) intermediate a first image and a second image of a sequence of video images, on basis of a first motion vector field (D3(x, n−1)) being estimated for the first image and on basis of a second motion vector field (D3(x, n)) being estimated for the second image is disclosed. The method comprises: creating a set of motion vectors (Dp, Dn, Dc) by selecting a number of motion vectors from the first motion vector field (D3(x, n−1)) and second motion vector field (D3(x, n)), on basis of the particular spatial position of the particular pixel; and establishing the particular motion vector (DR(x,n+α)) by performing an order statistical operation on the set of motion vectors (Dp, Dn, Dc).
摘要:
A method of converting an input image into an enhanced output image is disclosed. The method comprises: detecting (606) whether a particular pixel of the input image corresponds to an edge in the input image; establishing (606) an orientation for the particular pixel; and computing a final pixel value of the enhanced output image, corresponding to the particular pixel, by means of an orientation dependent sharpening filtering operation on basis of the particular pixel and a number of pixels being located in spatial neighborhood of the particular pixel, the orientation dependent sharpening filtering having a first component (702) and a second component (704), a first angle between a first orientation of the first component and the established orientation of the particular pixel being equal to a first predetermined value and a second angle between a second orientation of the second component and the established orientation of the particular pixel being equal to a second predetermined value, the second orientation and the first orientation being mutually different.