摘要:
There are provided an apparatus and a method for establishing a contention window in a WiMedia wireless network. The contention window establishing apparatus includes: a parsing unit extracting the number of devices that intend to transmit data from a beacon received during a beacon period and an access category (AC) of each device; a calculation unit calculating a transmission probability of each access category (AC) on the basis of the extracted number of devices; and a contention window establishing unit establishing a contention window for each access category (AC) on the basis of the calculated transmission probability, to reduce contentions among the devices and decrease data transmission latency time, thereby maximizing efficiency in data transmission latency time.
摘要:
A method and apparatus for estimating signal-dependent noise in a camera module are provided, in which an image is decomposed into high frequency components and low frequency components, a variance of noise in the image is estimated using the low frequency components, noise is eliminated from the high frequency components using the estimated noise variance, and the image is recovered using the noise-eliminated high frequency components and the low frequency components.
摘要:
A dynamic range enhancement method and apparatus for an imaging device expands a dynamic range of an input image without an associated increase in the amount of image calculations. The dynamic range enhancement method includes producing brightness information and color information from an input image; applying gamma correction and inverse gamma correction to the brightness information to produce a gamma corrected image and an inverse gamma corrected image; comparing variances of the gamma corrected image and the inverse gamma corrected image at identical spots; and expanding a dynamic range of the input image by selecting one of the variances at each spot. The dynamic range of an input image is expanded by applying a post imaging process without increasing calculation amount of the imaging device.
摘要:
A method and apparatus are provided for enhancing the readability of a character. The method includes determining ambient light of a mobile terminal and controlling background color and character color of a character image according to the determined ambient light. The method may further include performing an additional control according to the types of displays when controlling the background color and character color. Through this, it is possible to display a character image with enhanced visibility, while minimizing current consumption.
摘要:
A method and apparatus for estimating signal-dependent noise in a camera module are provided, in which an image is decomposed into high frequency components and low frequency components, a variance of noise in the image is estimated using the low frequency components, noise is eliminated from the high frequency components using the estimated noise variance, and the image is recovered using the noise-eliminated high frequency components and the low frequency components.
摘要:
A method and apparatus are provided for enhancing the readability of a character. The method includes determining ambient light of a mobile terminal and controlling background color and character color of a character image according to the determined ambient light. The method may further include performing an additional control according to the types of displays when controlling the background color and character color. Through this, it is possible to display a character image with enhanced visibility, while minimizing current consumption.
摘要:
Disclosed are an apparatus and a method for display of a screen according to brightness intensity of ambient light. One or more characteristic values configuring display data is set to be higher than a preset color characteristic value when measured brightness intensity of ambient light is higher than preset brightness intensity of ambient light, and one of the set color characteristic values is converted to a contrast characteristic value and is displayed. Therefore, even when brightness intensity of ambient light is high, the user can accurately view a screen.
摘要:
A block-based object counting apparatus and a block-based object counting that improves the counting of objects by using a camera. The object counting apparatus includes: a camera acquiring an image; a storage unit for storing average sizes and error data of an object in units of image blocks; and a control unit having a data inputter for receiving the acquired image for input, an object size determinator for determining appearance of the object by comparing a current image with a previous image and then determining the size of the object, a block determinator for determining a block where the object is located, and a counter for counting the object and fixing the counting of the object by comparing the size and location data of the object with data stored in a storage unit.
摘要:
A method and an apparatus for brightness-controlling image conversion. The method includes converting an input image of a first non-linear color space into a second linear color space; determining a brightness control ratio; adjusting channels of the second linear color space according to the brightness control ratio; converting the second linear color space into the first non-linear color space to form an output image.
摘要:
An apparatus and method for improving image quality based on definition and chroma are provided. The method includes analyzing an input image; calculating a quantified definition value and a quantified chroma value of the input image; determining a definition parameter corresponding to the quantified definition value and a chroma parameter corresponding to the quantified chroma value; and applying the determined definition parameter and the determined chroma parameter to a frame of the input image.