Abstract: An electronic device includes a sensor, a processor, and a memory configured to store at least one instruction executed by the processor, wherein the processor is configured to collect activity information on a user related to the electronic device by using the sensor, the collecting of the activity information including creating an amount of activity of the user for a specific goal or an activity engagement level for the specific goal by using the activity information, adjust at least one of an output time point, an output cycle, the number of outputs, or the output contents of the activity guide information for the user to an activity guide parameter at least based on the amount of activity or the activity engagement level, and output the activity guide information created by using the adjusted activity guide parameter through an output device operatively connected to the processor.

Abstract: An electronic device includes a sensor, a processor, and a memory configured to store at least one instruction executed by the processor, wherein the processor is configured to collect activity information on a user related to the electronic device by using the sensor, the collecting of the activity information including creating an amount of activity of the user for a specific goal or an activity engagement level for the specific goal by using the activity information, adjust at least one of an output time point, an output cycle, the number of outputs, or the output contents of the activity guide information for the user to an activity guide parameter at least based on the amount of activity or the activity engagement level, and output the activity guide information created by using the adjusted activity guide parameter through an output device operatively connected to the processor.

Abstract: A method and apparatus for generating a thumbnail of a video content in an electronic device is provided. The method for generating the thumbnail of the video content in the electronic device includes dividing a video content into a plurality of pieces, extracting a characteristic point of each of the plurality of pieces, comparing the characteristic point of each of the plurality of pieces and a characteristic point of each of a plurality of pieces of at least one other video content, and determining a thumbnail of the video content from a piece of the video content that is not the same as a piece of the at least one other video content, based on a result of the comparing.

Abstract: A method and apparatus for generating a thumbnail of a video content in an electronic device is provided. The method for generating the thumbnail of the video content in the electronic device includes dividing a video content into a plurality of pieces, extracting a characteristic point of each of the plurality of pieces, comparing the characteristic point of each of the plurality of pieces and a characteristic point of each of a plurality of pieces of at least one other video content, and determining a thumbnail of the video content from a piece of the video content that is not the same as a piece of the at least one other video content, based on a result of the comparing.

Abstract: A motion estimation apparatus and method for quickly performing video encoding based on a user input through a user input device are provided. The motion estimation apparatus includes an input receiver for receiving a user input, an input pattern analysis unit for analyzing the received user input and determining a user input pattern according to the analyzed user input, a storage for storing history information of a motion vector according to the user input pattern, and a motion estimator for initially estimating a motion vector of a motion estimation block of a current frame with reference to history information of a motion vector corresponding to the user input pattern stored in the storage, deciding a search location of a block matching the motion estimation block from a reference frame, and performing motion estimation on the motion estimation block using the decided search location.

Abstract: An error concealment apparatus and method that can selectively use error concealment techniques according to an error occurrence rate is disclosed. The error concealment apparatus includes an error detection unit for detecting errors occurring in video frames, first and second error concealment units for concealing the detected errors, and a video output unit for selectively outputting the video frames of which the errors have been concealed by the first and second error concealment units according to the results of error detection.

Abstract: A motion estimation apparatus and method for quickly performing video encoding based on a user input through a user input device are provided. The motion estimation apparatus includes an input receiver for receiving a user input, an input pattern analysis unit for analyzing the received user input and determining a user input pattern according to the analyzed user input, a storage for storing history information of a motion vector according to the user input pattern, and a motion estimator for initially estimating a motion vector of a motion estimation block of a current frame with reference to history information of a motion vector corresponding to the user input pattern stored in the storage, deciding a search location of a block matching the motion estimation block from a reference frame, and performing motion estimation on the motion estimation block using the decided search location.

Abstract: A method and apparatus are provided for encoding/decoding an image based on a region of interest (ROI). The method and apparatus provide error-resilience by duplicating ROI data in a variable manner according to image features or by reducing non-ROI data. The ROI based image encoding apparatus and method estimate a complexity for each block located in the ROI of an image, transform the image by creating more duplicate blocks for ROI blocks having high complexity and fewer duplicate blocks for ROI blocks having low complexity, and encode the transformed image.

Abstract: A method and apparatus are provided for encoding/decoding an image based on a region of interest (ROI). The method and apparatus provide error-resilience by duplicating ROI data in a variable manner according to image features or by reducing non-ROI data. The ROI based image encoding apparatus and method estimate a complexity for each block located in the ROI of an image, transform the image by creating more duplicate blocks for ROI blocks having high complexity and fewer duplicate blocks for ROI blocks having low complexity, and encode the transformed image.

Abstract: Video encoding and decoding methods and apparatuses are provided which are effective for error correction and error concealment in an error-prone environment. The video encoding method includes determining an encoding operation to encode raw video among a frame encoding operation, a top/bottom field encoding operation, and a left/right field encoding operation based on at least one characteristic of the raw video; and generating a bit stream by adaptively performing the encoding operation that is determined to encode the raw video. Further, video may be divided into frame pictures, top/bottom field pictures and left/right field pictures, and encoded accordingly. Therefore, a compression rate can be increased, and error correction and concealment can be effectively performed on a lost field by using a normally received field.

Abstract: Video encoding and decoding apparatuses and methods capable of minimizing a random access delay are provided. The video encoding apparatus includes an encoding control unit which sets an intra frame (I-frame) interval of a base layer shorter than an I-frame interval of an enhancement layer, a base layer encoding unit which generates a base layer bitstream by reducing and encoding an original image according to the I-frame intervals set by the encoding control unit, and an enhancement layer encoding unit which generates an enhancement layer bitstream by decoding an enhancement layer image which is not temporally aligned with the base layer bitstream and referring to a predetermined image obtained by decoding the base layer bitstream and enlarging the decoded result.

Abstract: An error concealment apparatus and method that can selectively use error concealment techniques according to an error occurrence rate is disclosed. The error concealment apparatus includes an error detection unit for detecting errors occurring in video frames, first and second error concealment units for concealing the detected errors, and a video output unit for selectively outputting the video frames of which the errors have been concealed by the first and second error concealment units according to the results of error detection.