Abstract: A method and device for coding interlaced video data. The method includes coding interlaced video data captured from a plurality of different positions, the interlaced video data including data for a top field and a bottom field for at least one interlaced video scan, the top field including every other line starting with a top line of a frame and the bottom field including interposed lines in the frame.

Abstract: Method and apparatus for motion estimation for video processing. An embodiment of a method for motion estimation includes the following steps. In the course of motion estimation, integer motion estimation is performed with respect to a macroblock to generate a plurality of integer motion vectors. It is determined, according to a portion of the motion vectors, which correspond to a plurality of block modes, whether the integer motion vectors of each block mode are substantially equal to those of a corresponding upper-layer block mode of the block mode, so as to determine whether to perform or skip fractional motion estimation of the block mode, wherein each corresponding upper-layer block mode(s) of the block modes is greater than the block mode.

Abstract: A search apparatus and search method of prediction mode having direction are provided. The apparatus and method can be applied to intra-prediction of video processing. An initial prediction mode is quickly selected based on a distribution of directional energy values. A plurality of first-stage prediction modes are obtained by spreading out from the initial prediction mode. A fine adjustment is processed according to the prediction mode of a neighboring block. The coding costs of the first-stage prediction modes are calculated and then the prediction mode with the lowest coding cost is selected. Therefore, a total calculation amount is reduced.

Abstract: A method and device for coding interlaced video data. The method includes coding interlaced video data captured from a plurality of different positions, the interlaced video data including data for a top field and a bottom field for at least one interlaced video scan, the top field including every other line starting with a top line of a frame and the bottom field including interposed lines in the frame.

Abstract: An intra-prediction mode optimization method and image compression method/device are disclosed. To properly determine an intra-prediction mode for a target block of an image, a control block is selected from reference blocks of the target block, and an intra-prediction mode adopted in the control block is regarded as a control mode. Assuming that the target block is encoded according to the control mode as well, the prediction efficiency of the target and control blocks is assessed. When the intra-prediction efficiency, under the control mode, of the target block is better than that of the control block, the control mode is determined to be the intra-prediction mode of the target block and an intra-prediction pattern of the target block can be obtained. Otherwise, another one of the reference blocks is selected to be the control block and the control mode is refreshed, to repeat the intra-prediction efficiency assessment.

Abstract: Method and apparatus for motion estimation for video processing. An embodiment of a method for motion estimation includes the following steps. In the course of motion estimation, integer motion estimation is performed with respect to a macroblock to generate a plurality of integer motion vectors. It is determined, according to a portion of the motion vectors, which correspond to a plurality of block modes, whether the integer motion vectors of each block mode are substantially equal to those of a corresponding upper-layer block mode of the block mode, so as to determine whether to perform or skip fractional motion estimation of the block mode, wherein each corresponding upper-layer block mode(s) of the block modes is greater than the block mode.

Abstract: An intra-prediction mode optimization method and image compression method/device are disclosed. To properly determine an intra-prediction mode for a target block of an image, a control block is selected from reference blocks of the target block, and an intra-prediction mode adopted in the control block is regarded as a control mode. Assuming that the target block is encoded according to the control mode as well, the prediction efficiency of the target and control blocks is assessed. When the intra-prediction efficiency, under the control mode, of the target block is better than that of the control block, the control mode is determined to be the infra-prediction mode of the target block and an intra-prediction pattern of the target block can be obtained. Otherwise, another one of the reference blocks is selected to be the control block and the control mode is refreshed, to repeat the intra-prediction efficiency assessment.

Abstract: A composite method and apparatus for adjusting an image resolution are provided, which are applied for adjusting a digital image or de-interlace scanning, especially for achieving an edge enhancing effect. The composite method may include: obtaining an original image and a scaling factor for adjustment S; after that, detecting an edge of the original image and generating an edge map for the original image; then, calculating and generating an adjusted image with a scaling factor equal to 2n; and finally, converting the adjusted image into a final image, which is S times the original one.

Abstract: A video signal processing method comprises the steps of: decoding the significant coefficient flag of a stream of video signals and constructing a stack of run coefficients at the same time; and sequentially outputting the run and level coefficients according to the stack of run coefficients and the stream of video signals.

Abstract: An architecture of multilayered DRM protection structure for multimedia service and the method of forming the same are provided. The architecture comprises a multilayered DRM encryption structure and a DRM decryption structure. The inputted multimedia service is decomposed and encrypted into an encrypted multimedia service stream through a multimedia service decomposer and a multimedia DRM organizer. The encrypted stream is decrypted by a DRM composer from top layer to bottom layer. A full or partial multimedia service is then presented. For a multimedia service application, this enhances the DRM protection by increasing the complexity of multimedia encryption for a multimedia service application. It also provides the variety for the multimedia service application via different compositions of multimedia objects. The DRM protection structure is embedded into each layer of multimedia services and objects and can be set up different levels of DRM protection.

Abstract: A composite method and apparatus for adjusting an image resolution are provided, which are applied for adjusting a digital image or de-interlace scanning, especially for achieving an edge enhancing effect. The composite method may include: obtaining an original image and a scaling factor for adjustment S; after that, detecting an edge of the original image and generating an edge map for the original image; then, calculating and generating an adjusted image with 2n newly-added pixels according to the edge map and the scaling factor for adjustment; and finally, with a bilinear algorithm, converting the adjusted image into a final image, which is S times the original one.

Abstract: An architecture of multilayered DRM protection structure for multimedia service and the method of forming the same are provided. The architecture comprises a multilayered DRM encryption structure and a DRM decryption structure. The inputted multimedia service is decomposed and encrypted into an encrypted multimedia service stream through a multimedia service decomposer and a multimedia DRM organizer. The encrypted stream is decrypted by a DRM composer from top layer to bottom layer. A full or partial multimedia service is then presented. For a multimedia service application, this enhances the DRM protection by increasing the complexity of multimedia encryption for a multimedia service application. It also provides the variety for the multimedia service application via different compositions of multimedia objects. The DRM protection structure is embedded into each layer of multimedia services and objects and can be set up different levels of DRM protection.