摘要:
An apparatus of reducing noise includes: an edge determining module determining whether each pixel of an image corresponds to an edge; a low pass filter module performing low pass filtering of the image in two directions and performing low pass filtering only for the pixel determined not to be the edge; a filter selecting module selecting a filter having a flexible size to be applied to a mask region for each of the images low pass filtered based on the average brightness of the entire region and the average brightness of the mask region having a predetermined size; a sigma filter module sigma filtering the mask region using the selected filter for each of the images low pass filtered; and an averaging module averaging the image sigma filtered in the two directions.
摘要:
There is provided an on-screen display (OSD) apparatus including: a plurality of ultrasonic sensors having respective ranges previously assigned thereto to thereby detect an object therein; a camera module capturing an image of the ranges detected by the plurality of ultrasonic sensors; and a controlling unit controlling a display of positional information of the object detected in the ranges assigned to the plurality of individual ultrasonic sensors in the image captured by the camera module.
摘要:
Provided is a system for assisting visibility of a driver, for displaying a nighttime image in color image quality required to recognize a pedestrian and displaying an image of a lane required to alarm a lane departure using a single camera module, which includes a camera module; a signal extraction unit; a lane pattern image data generating unit; a pedestrian image data generating unit; and a display drive unit.
摘要:
Disclosed herein are a method for estimating acoustic velocity of an ultrasonic image and an ultrasonic diagnosis apparatus using the same. The method for estimating acoustic velocity of an ultrasonic image includes: (A) dividing each of the ultrasonic images into a plurality of blocks; (B) extracting contours of ultrasonic images for each block of one frame among the ultrasonic images; (C) calculating and analyzing average luminance values of each block; (D) determining the optimal block number using the average luminance values and selecting the optimal blocks; and (E) estimating and applying the real acoustic velocity, whereby the acoustic velocity is estimated in real time and is applied to the ultrasonic diagnosis apparatus.
摘要:
Disclosed herein is an ultrasonic diagnostic apparatus and ultrasonic image processing method. The ultrasonic diagnostic apparatus includes an ultrasonic transmission unit; An ultrasonic probe emits; An ultrasonic reception unit; An image processing unit; A sound velocity determination unit; and A control unit. Accordingly, there is an advantage in that the actual sound velocity of a reflected wave is estimated, so that high-quality ultrasonic images can be provided, and the time required for the estimation of a sound velocity can be reduced.
摘要:
Disclosed herein is a method for processing image data of an optical mouse. In the method for processing image data of an optical mouse, direction and size values of motion vectors which are image data consecutively inputted from an image pixel array are filtered with respect to X and Y axes by a filter. A predetermined number of motion vectors converted by and outputted from the filter are accumulated, and the accumulated values are mapped to conversion values to attenuate noise components and amplify directionality of the motion vectors depending on a speed of the optical mouse by a mapper. The values mapped by the mapper in a plurality of pipes are stored, and a value obtained by adding the plural stored values to each other and dividing the added result value by a conversion factor is transmitted to a personal computer (PC) interface such as a Universal Serial Bus (USB) or PS/2. Accordingly, the present invention is advantageous in that it minimizes noise components of the optical mouse, and consequently ensures the unnatural movement of a cursor on a PC screen.
摘要:
Disclosed herein is a single integrated circuit for an optical mouse. The circuit includes an image pixel array for recognizing light and shadow of a surface under the optical mouse, an analog-to-digital converter for receiving analog signal from the image pixel array and converting analog data into digital data, a motion vector calculation unit for converting the digital data into one-bit data and calculating a motion vector, a motion vector process unit for accumulating motion vectors, correcting errors of the motion vectors, and accumulating moving distances of the optical mouse, a timing signal generator for generating control signals to control an overall operation of the circuit and operation signals pursuant to operation states of the circuit, an interface designed to transmit values processed by the process unit into a personal computer, and a transceiver for enabling one of a universal serial bus or an IBM personal system/2 in the interface.
摘要:
An optical sensing apparatus and method includes calculating an accurate motion vector coordinate value of a current preprocessed image by partial-searching a particular coordinate axis corresponding to a predetermined direction determining coefficient, a predetermined speed determining coefficient, and/or a predetermined direction and/or speed determining coefficient according to a history of a motion vector coordinate values with respect to a past preprocessed image, calculating the motion vector coordinate value of a future according to a history of a motion vector coordinate value of the current preprocessed image, and performing a position navigation with respect to current or future preprocessed image.
摘要:
An optical navigation sensor device and an image processing method using a 2-dimensional sequential image process are disclosed. A pre-processor stores digital voltage values of respective pixels of an image received from a pre-processor in a memory, performs a pre-process for the digital voltage values of respective pixels sequentially received from the memory, thereby producing a pre-processed current image, and extracts a pre-processed current central image from the pre-processed current image. A motion coordinate calculator stores the pre-processed current central image as X/Y-axis reference image candidates, determines replacement of X/Y-axis reference images for calculation of motion coordinate values of a next pre-processed image in accordance with X/Y-axis motions of the pre-processed current image, and compares the pre-processed current image with the X/Y-axis reference images, thereby calculating X/Y-axis motion coordinate values of the pre-processed current image.
摘要:
An optical navigation sensor device and an image processing method using a 2-dimensional sequential image process are disclosed. A pre-processor stores digital voltage values of respective pixels of an image received from a pre-processor in a memory, performs a pre-process for the digital voltage values of respective pixels sequentially received from the memory, thereby producing a pre-processed current image, and extracts a pre-processed current central image from the pre-processed current image. A motion coordinate calculator stores the pre-processed current central image as X/Y-axis reference image candidates, determines replacement of X/Y-axis reference images for calculation of motion coordinate values of a next pre-processed image in accordance with X/Y-axis motions of the pre-processed current image, and compares the pre-processed current image with the X/Y-axis reference images, thereby calculating X/Y-axis motion coordinate values of the pre-processed current image.