摘要:
The invention relates to a method and a circuit arrangement to reduce motion blur of images shown in non-stroboscopic display devices, in particular Liquid Crystal Display Panels (LCDs). Thin Film Transistor Displays (TFTs), Colour Sequential Displays. Plasma Display Panels (PDPs), Digital Micro Mirror Devices or Organic Light-Emitting Diode (OLED) displays, in which motion vectors depending on moving components in each image of an input video, signal are calculated, in which anti-motion blur filtering of the input video signal is performed based on the calculated motion vectors to produce an output video signal, and in which images are generated on said display device depending on said output video signal. In order to provide an improved spatial filtering with less noise enhancement and less noise modulation, it is proposed that edge characteristics in each image of the input video signal are determined and that anti-motion blur filtering is further based on said determined edge characteristics. In this way, spatial filtering is concentrated on significant parts of an image only, and both noise enhancement and noise modulation are reduced.
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:
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:
An image conversion unit (100) for converting an input image with an input frequency spectrum into an output image with an output frequency spectrum, the output frequency spectrum having more relatively high frequency components than the input frequency spectrum is disclosed. The image conversion unit comprises: means for providing (102) an intermediate image on basis of the input image; and combining means (104) for combining a high frequency signal with the intermediate image into the output image by means of error diffusion.
摘要:
A color picture display device having a shadow mask is provided comprising a cathode ray tube (CRT) having a gun (1) for generating at least two electron beams mutually different colors and a display screen (2). The screen has phosphor deposits for emitting light of different colors. The device has a deflection system (3) for scanning the electron beams across the display screen (2) in a pattern of successive, substantially parallel lines, each line being scanned in a scanning direction. The device further comprises means for diverging the landing points on the screen for at least one of the beams with respect to one of the other beams in a direction other than the scanning direction, and means for interpolation of color video data, used to control the beam intensity, in order to reduce shift errors due to the diverged beams. Further, a method for operation of such a color picture display device is disclosed.
摘要:
An edge enhancement unit (100) for calculating a sharpened edge for an original edge in an image on basis of the properties of the original edge. The original edge is represented by a transient (112) in a signal representing values of pixels of the image. The edge enhancement unit (100) comprises: an edge determining unit (104) for determining properties of the transient (112) on basis of values of a first number of pixels around the original edge; and a filter unit (102) for calculating the sharpened edge on basis of values of a second number of pixels around the original edge and the properties of the transient (112).
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), wherein the additional data includes 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 a set of luminances of pixels in an image of the video data, the method: generates 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 encodes and outputs the descriptive data (DED) as additional data (DD).
摘要:
A system for enhancing the appearance of an object comprises an illumination device (5) for providing enhancement illumination and a light recording device (1) for recording the reflection by the object of illumination on the object. A reference illumination is mixed (8) with the enhancement illumination. The information in the reflected light is filtered (9) to filter the reflection data (1) due to the reference illumination. These data are used for calculating the enhancement illumination in a processor (3).
摘要:
A method for modifying an image being defined by a matrix of pixels comprises: •calculating (1) a color frequency distribution of the matrix of pixels; •defining (3) for each pixel an energy value as a weighted function of the color frequency of the pixel, so as to define an image saliency map; •transforming (5) the image, said transformation being based on the pixel energy values. A computer software product to apply the method, an apparatus and a TV set are also disclosed.
摘要:
The present invention relates to a device and a method for extracting information from detected characteristic signals. A data stream (76, 78, 80, 82) derivable from electromagnetic radiation (14) emitted or reflected by an object (11) is received and a plurality of characteristic index elements (50) varying over time can be extracted therefrom. The index elements (50) comprise physiological information (48) indicative of at least one at least partially periodic vital signal (12), and a disturbing signal component (58). For eliminating the disturbing signal component (58) to a great extent, the characteristic index elements (50) can be projected to a disturbance-reduced index element (64) having a distinct orientation in relation to a presumed orientation of the disturbing signal component (58). The disturbance-reduced index element (64) is chosen so as to reflect a dominant main orientation and length of the disturbing signal component (58) over time. Consequently, the mainly genuine physiological information (48) extracted from the data stream (76, 78, 80, 82) in this way can be utilized for determining the at least one at least partially periodic vital signal (12).