Abstract: A method and apparatus of generating a hybrid three dimensional reconstruction of a vascular structure affected by periodic motion is disclosed. At least two x-ray images of the vascular structure are acquired. Indicia of the phases of periodic motion are obtained and correlated. Images from a similar phase of periodic motion are selected and a three dimensional modeled segment of a region of interest in the vascular structure is generated. A three dimensional volumetric reconstruction of a vascular structure is generated that is larger than the modeled segment. The modeled segment of interest and the volumetric reconstruction of the larger vascular structure are combined and displayed in human readable form.

Abstract: A conebeam computed tomography scanner (10) acquires conebeam projection data along a generally helical source trajectory around an examination region (14). An exact reconstruction processor (40) includes a convolution processor (42) and an aperture weighted backprojection processor (46, 66). The convolution processor (42) performs at least one convolution of the acquired projection data. The convolving operates on projection data falling within an exact reconstruction window (38) and on at least some redundant projection data falling outside the exact reconstruction window (38) to produce convolved projection data.

Abstract: An image processing system processes a sequence of images to generate a statistical model for each of a number of different persons to be tagged so as to be identifiable in subsequent images. The statistical model for a given tagged person incorporates at least one appearance feature, such as color, texture, etc., and at least one geometric feature, such as shape or position of a designated region of similar appearance within one or more images. The models are applied to subsequent images in order to perform a person detection, person location and/or person tracking operation. An action of the image processing system is controlled based on a result of the operation.

Abstract: An integrator circuit comprises an operational amplifier which has a transistor stage (1) with an input terminal (4) and an output terminal(3), a feedback capacitor (2) connected between the input terminal (4) and the output terminal (3), and a resistor (5) connected to the input terminal (4), and also has an additional circuit branch (20) comprising a second capacitor (22) and a second resistor (25) connected in series one with the other and connected between the output terminal (3) of the transistor stage (1) and voltage comprising the inverted input voltage to the integrator circuit. Preferably two additional circuit branches (320, 320?) are provided. One may be connected between the non-inverting or positive output terminal (33) of the transistor stage (1) and the inverting or negative input of the integrator. The other circuit may be connected between the negative output terminal (37) of the transistor stage (1) and the positive input of the integrator.

Abstract: A luminaire (1) comprising a concave reflector (2) enclosing a hollow space (3) and defining with an outer edge (4) a light emission window (5). The luminaire can accommodate at least two lamps (6, 7). The luminaire further comprises an optically semi-permeable wall (8) positioned in between the two lamps and dividing the hollow space into chambers (9, 10), and a counter-reflector (11) provided opposite the reflector. Light originating from the lamps can only leave the luminaire through the light emission window after passing through the semi-permeable wall. It is thus possible to obtain homogeneously mixed light as well as to obtain light of equal intensity from the various chambers, also when only one lamp is operating or the two lamps operate at different intensities.

Abstract: Parametric stereo coders use perceptually relevant parameters of the input signal to describe spatial properties. One of these parameters is the phase difference between the input signals (ITD or IPD). This time difference only determines the relative time difference between the input signals, without any information about how these time differences should be divided over the output signals in the decoder. An additional parameter is included in the encoded signal that describes how the ITD or IPD should be distributed between the output channels. To this goal the delay between a computed monaural signal and one of the input signals is used.

Abstract: A magnetic resonance imaging method for forming forms an image of an object from a plurality of signals acquired by an array of multiple receiver antennae, and in which spins are excited in a pail of the object. Slices (22) are selected with a predetermined field-of-view for scanning the object and are rotated uniformly over a predetermined angle. MR signals are measured along a predetermined trajectory containing a plurality of lines of slices in k-space by application of a read gradient and other gradients. Further slices (24) are shifted in a lengthwise direction obtaining a staggered arrangement such that the beginning and end of each slice are at least approximately within the area covered by the slices before rotation.

Abstract: The present invention relates to a filter circuit for a set of original data (X0–X7) able to implement in series the steps of discrete transformation (DCT2), correction (ZER) of odd transformed data and inverse discrete transformation (IDCT2). The filter circuit takes advantage of the fact that the paths corresponding to the even and odd transformed data are completely separate with the exception of a first processing stage (ST1) of the discrete transformation and a last processing stage (ST8) of the inverse discrete transformation in order to connect a first half of the data issuing from the first stage to the last processing stage. The implementation of the filter circuit is thus simplified, both making the circuit less expensive and giving it a lower power consumption. For optimized implementation, the filter circuit functions in differential mode.

Abstract: A color display screen has a plurality of cells (2). Each cell (2) has a pixel (P) capable of providing a first output light of a first color and a second output light of a second color and a photosensitive device (D) for converting an optical display control signal (Li) into electrical signals (1). The optical display control signal (Li) includes information about the first output light and the second output light to control the first output light and the second output light. The photosensitive device (D) includes a decoder (DM) for decoding the information about the first and the second output light.

Abstract: In a voltage control circuit (100), an array (500) of circuit elements is used to drive a variable capacitor controlling the frequency of a voltage controlled oscillator (110) (VCO). The array (500) has a plurality of cells (600), at least one output, a plurality of coarsesetting inputs (383-388) and a plurality of fine-setting inputs (380-382). Both types of inputs are adapted to enable selectable combinations of the cells (600). The VCO (110) is adapted to operate at a plurality of bit-addressable reference frequencies ranging over a plurality of frequency bands. The address control circuit (130) establishes one of the plurality of frequency bands by controlling the coarse-setting inputs (383-388), and also establishes one of the frequency bands by controlling the fine-setting inputs. In one example, the address control circuit is used to set a frequency band for the VCO circuit (100) and an analog signal is used to tune to a desired frequency within the band.

Abstract: A display apparatus (100) for displaying an output image on basis of 3D visual information is disclosed. The display apparatus (100) comprises: first receiving means (101) for receiving a first signal (3DV) representing the 3D visual information; second receiving means (116) for receiving a second signal (P) representing positional information of a viewer of the output image, as function of time; filtering means (122) for high-pass filtering the second signal (P), resulting in a third signal (PF); rendering means (118) for rendering the output image on basis of the first signal (3DV) and the third signal (PF); and display means (112) for displaying the output image.

Abstract: In an indexation method, an average color or a statistical distribution of colors in an image is determined by providing a set of coordinates in a multidimensional color space (80). The set of coordinates of each color is reduced to a level of Hue if the color verifies a first condition, i.e. the color is considered a true color (81), and to a level of Brightness if the color verifies a second condition, i.e. the color is considered a gray color (82). Indexation data for indexing the image includes the level of Hue or Brightness resulting from each color. The indexation method is used in a search method for searching a collection of graphic elements. An input specifies a desired color. A corresponding search query pertains to a level of Hue or a level of Brightness if the desired color includes a true color, or a gray color respectively.

Abstract: The present invention relates to a novel driving scheme for an electrophoretic display providing accurate intermediate optical states. According to the invention, the level of remnant voltage across pixels are taken into account when driving the display. Remnant voltage is built up when resetting the pixel between consecutive image states, and the reset states are therefore chosen so as to avoid the generation of excessive remnant voltage levels. The invention can for example be implemented using a counter, counting the number of consecutive uses of the same state as extreme state, or using a look-up-table in which driving history of the display is mapped and which determines the reset state to be used for the next reset based on the driving history. In effect, the threshold number of consecutive uses of the same state as a reset state is avoided.

Abstract: The encoder transforms the audio signals (x(n),y(n)) from the time domain to audio signal (X(k),Y(k)) in the frequency domain, and determines the cross-correlation function (Ri, Pi) in the frequency domain. A complex coherence value (Qi) is calculated by summing the (complex) cross-correlation function values (Ri, Pi) in the frequency domain. The inter-channel phase difference (IPDi) is estimated by the argument of the complex coherence value (Qi), and the inter-channel coherence (ICi) is estimated by the absolute value of the complex coherence value (Qi). In the prior art a computational intensive Inverse Fast Fourier Transformation and search for the maximum value of the cross-correlation function (Ri; Pi) in the time domain are required.

Abstract: The invention relates to video transcoding between a first and second video standard, such as H.264 and MPEG-2. A video transcoder (201) comprises an interface (203) that receives a video signal in accordance with a first video encoding standard. The video signal is decoded in a decoder (207). An extraction processor (209) extracts motion estimation data from the first video signal, preferably as part of the decoding process. A motion estimation data processor (211) generates second motion estimation data, compatible with a second video encoding standard having a different set of motion estimation options, from the first motion estimation data. The second motion estimation data is generated by projecting motion estimation block positions between reference pictures, aligning prediction blocks with a block position framework and adjusting the prediction block sizes.

Abstract: A receiver for frequency down converting a radio frequency signal (10) using a multistage frequency (down) conversion. The radio frequency signal (10) having a center frequency that is comprised in one of at least two frequency bands, comprises oscillating means (20) for generating a first mixing signal (11) having a first frequency. And also a frequency divider (22) arranged to derive a second mixing signal (13) from the first mixing signal. The receiver further comprising a first mixer (12) arranged to down-convert the radio frequency signal (10) to a first lower frequency signal (15) using the first mixing signal (11) and a second mixer arranged to down-convert the first low frequency signal to a second lower frequency signal (18) using the second mixing signal (13). Wherein the division factor of the frequency divider and a ratio between the center frequency and the first frequency are determined by the one of at least two frequency bands.

Abstract: A playback apparatus and associated method is disclosed for use in a reproducing system, the apparatus including a cache memory configured to store data read from a data source (1); a cache replacement unit (341) configured to identify certain of the data to be deleted from the cache memory (335) based on a determination of the data source data's use in at least two play modes of the apparatus; and a presentation unit (337) configured to obtain data from the cache memory (335) to be presented to a user. The playback apparatus further includes a disc control unit (343) configured to identify data to be read from the data source (1) to be stored in the cache memory (335) based on the current contents of the cache memory (335).

Abstract: An optical storage carrier is loaded with applications implemented as Java objects that enable interactive services, e.g. gaming, interactive A/V content playback, web browsing. Each Java object includes at least three methods for setting the application in an inactive state, a paused state or an active state. The carrier is also loaded with a loader application that includes a main method. The loader application controls the respective lifecyles of all Java objects present on the carrier and controls the respective methods of the Java objects. The loader application only permits one Java object to run at a time. The lifecyle of the loader application is linked to the disc and the loader application is loaded in memory when the disc is inserted in the device and killed when the disc is removed. The device runs a Java virtual machine on top of which the loader application is configured to run.

Abstract: The invention relates to a device and a method for displaying a vessel (2) with the aid of intravascular ultrasound images (1). A sequence of intravascular ultrasound images (I(E,x)) is generated by means of a probe (5) and stored in a memory (10) in a manner indexed by the associated location (x) where they were generated and also the associated heartbeat phase (E) and/or breathing phase. During a subsequent medical intervention, those ultrasound images (I1,12,13) which best correspond to the heartbeat phase of a current fluoroscopic image (At) or belong to the current stopping location of a catheter (13) can be selected from the memory (10) and displayed on a monitor (12).

Abstract: The present invention provides a method of manufacturing on a substrate (50) a 2-transistor memory cell comprising a storage transistor (1) having a memory gate stack (1) and a selecting transistor, there being a tunnel dielectric layer (51) between the substrate (50) and the memory gate stack. (1). The method comprises forming the memory gate stack (1) by providing a first conductive layer (52) and a second conductive layer (54) and etching the second conductive layer (54) thus forming a control gate and etching the first conductive layer (52) thus forming a floating gate. The method is characterized in that it comprises, before etching the first conductive layer (52), forming spacers (81) against the control gate in the direction of a channel to be formed under the tunnel dielectric layer (51), and thereafter using the spacers (81) as a hard mask to etch the first conductive layer (52) thus forming the floating gate, thus making the floating gate self aligned with the control gate.