38 results about "WebP" patented technology

The invention relates to the field of image display development, in particular to a dynamic picture loading method and device, a storage medium and terminal equipment. The method comprises the steps of obtaining a to-be-displayed Webp dynamic picture file; loading the Webp dynamic picture file to obtain a frame sequence of Webp dynamic pictures; decoding the frame sequence to obtain decoded framedata, storing the frame data as bitmap data, and storing the bitmap data in a resident bitmap container; and converting bitmap data acquired from the bitmap container into texture by using a graphic rendering engine, and rendering a dynamic picture according to the texture. Memory resources occupied by image processing can be reduced, and Webp dynamic pictures can be drawn smoothly.

The invention discloses a WebP coding method and device which are applied to equipment comprising an FPGA acceleration card and a CPU end, and the DDR cache end of the FPGA acceleration card receivesa target picture sent by the CPU end; the FPGA acceleration card reads the YUV image data of the target picture from the DDR cache end, and divides the WebP encoding process of the YUV image data intoa plurality of encoding steps executed in sequence to perform assembly line parallel processing so as to obtain an encoded WebP code stream; the FPGA acceleration card returns a WebP code stream to the DDR cache end; and the DDR cache end sends the WebP code stream to the CPU end. According to the invention, the assembly line parallel processing of the WebP coding algorithm is realized, so that the operation speed of the WebP coding algorithm is improved, and the WebP coding efficiency is further improved.

The embodiment of the invention discloses a network picture access method. The method includes the steps that a preset standard picture in the Webp format is acquired, and the attribute value of at least one attribute of the standard picture is extracted; the standard picture is loaded and rendered; whether the attribute value of the attribute extracted before the standard picture is loaded and rendered is the same as the attribute value of a corresponding attribute after the standard picture is loaded and rendered or not is judged, if yes, an access request for access to a network picture in the Webp format is sent, and a response message for returning the network picture in the Webp format is received so as to achieve access; if not, an access request for access to the network picture in a supported format different from the Webp format is sent, and a response message for returning the network picture in the corresponding format is received so as to achieve access to the network picture. The embodiment of the invention further discloses a network access request response method and a device and system corresponding to the method. Through the network picture access and access request response method and the device and system corresponding to the method, the network picture access (response) efficiency can be improved.

The invention discloses an image encoding method for converting JPEG to WebP, which comprises obtaining a JPEG file to be converted, and obtaining JPEG image file data by analyzing the JPEG file to be converted; performing Huffman decoding on the JPEG image file data to obtain macroblock data in a frequency domain space; Carry out macroblock prediction on the frequency domain data, and select the optimal prediction mode of the macroblock; perform residual data calculation on the macroblock data in the frequency domain space according to the selected optimal prediction mode, and obtain macroblock residual coefficient data; Entropy encoding is performed on the macroblock residual coefficient data in the domain data space to obtain WebP image file data, and the WebP image file data is encapsulated into a WebP image file format. This application reduces the complexity of the JPEG-to-WebP image encoding algorithm and improves the conversion performance. In addition, the present application also provides a JPEG-to-WebP image encoding device having the above-mentioned technical advantages.

The invention discloses a webp image coding method. Device and electronic equipment, The method comprises the following steps of: obtaining image data in a Webp format, and segmenting the image data to obtain a Y component, a U component and a V component, carrying out parallel coding processing on the Y component, the U component and the V component through an FPGA to obtain a coding Y component,a coding U component and a coding V component, and obtaining image coding data according to the coding Y component, the coding U component and the coding V component. The Y component, the U componentand the V component are respectively processed by adopting a parallel mode through the FPGA, so that the coding effect is good, and the real-time performance of coding the webp format image is improved. The technical problems that in the prior art, the encoding speed of the image in the webp format is low, and the real-time performance and bandwidth requirements are difficult to meet are solved,and the technical effects that the encoding effect is good, and the real-time performance of encoding the image in the webp format is improved are achieved.

Embodiments of the present application provide a picture decoding method and related products. The picture decoding method includes: obtaining a target picture, the target picture is a picture in webp format; using a preset method to process the target picture into a video to be processed in vp8 video format; using a vp8 decoder to decode the video to be processed to obtain A decoded picture corresponding to the target picture. In this way, after the target picture is processed into the video to be processed in the vp8 video format, the vp8 decoder is used to decode the video to be processed. Compared with using the CPU to decode the target picture in the webp format, the decoding speed is faster and the decoding higher efficiency.

The application discloses a method, device and medium for verifying the integrity of a WebP picture, and relates to the field of computer technology. The method includes: reading the file bytes of the WebP picture file, dividing the file bytes into multiple byte groups according to the order of the file bytes and a preset integrity judgment template; determining the verification type of each byte group , determine whether to convert the byte group into a positive integer according to the check type; if not, then according to the position of the byte group in the file byte, compare the byte group with the byte at the corresponding position in the integrity judgment template If necessary, convert the byte group into a positive integer, and according to the position of the byte group in the file byte, compare the positive integer with the verification parameters of the WebP image file to determine the byte group integrity. Before decoding the WebP picture file, this application first judges its integrity, and only actually decodes the complete WebP picture file, so as to improve the decoding efficiency.

This application discloses a method for WebP file conversion, including setting the conversion operations of each step of converting a source format image file into a WebP file as a corresponding execution queue, so that each execution queue can be executed relatively independently; Set the number of threads; when receiving the source format image file stream, execute all execution queues in parallel to obtain the corresponding WebP file stream. In this method, each step of conversion operation is set as a corresponding execution queue, and a preset number of threads are assigned to each execution queue. When the source format image file stream is received, all execution queues are executed in parallel to obtain the corresponding WebP file stream. The execution efficiency of the entire processing process of converting source format image files into WebP format files is greatly improved. At the same time, the present application also provides a WebP file conversion device, device and computer-readable storage device, which have the above-mentioned beneficial effects.

The invention discloses a WebP compression parallel acceleration method and a device based on an OpenCL (Open Computing Language). The method comprises steps: an image is rotated, macro blocks in an ith column in the image are down moved for i-1 rows, blank macro blocks are added at the rest positions, and a rotating image with n(m+n 1) macro blocks is acquired, wherein n is the column number of the image and the rotating image, m is the row number of the image, i is a positive integer no less than 0 but no more than n, and m+n 1 is the row number of the rotating image; according to the known macro block boundary data and / or macro block boundary data stored in a cyclic buffer area in a local memory in the OpenCL, parallel data coding is sequentially carried out on the macro blocks in each row of the rotating image; and the macro block boundary data acquired when the macro blocks of the image are subjected to data coding are stored to corresponding positions in the cyclic buffer area. The storage space needed by the macro block boundary data is greatly reduced, the macro block boundary data are stored in the local memory, and access to global memory is avoided.

The present invention provides a method and device for generating a dynamic webp format picture. The method includes: acquiring a pending task for generating a dynamic webp format picture, and the pending task at least includes: a plurality of first static pictures, the number of supplementary frames , output size and number of cycles; set multiple first static pictures as transparent and set the size of multiple first static pictures as output size to obtain multiple second static pictures; generate webp objects according to the number of cycles; sequentially To each group of the second static pictures, the complementary frame picture generation step is performed to generate the complementary frame numbers of the second static pictures of each group; webp object to generate dynamic webp format pictures. Users are not required to make complementary frame pictures frame by frame, which reduces the production difficulty and production cost of dynamic webp format pictures.

The invention discloses an image processing method, device, device and computer-readable storage medium based on a WebP image compression algorithm, comprising: acquiring a plurality of Y macroblocks, a plurality of U macroblocks and a plurality of U macroblocks in the YUV image data of the image to be processed Z macroblocks; according to the dependencies between macroblocks, reorganize the traversal order of sub-blocks in multiple Y macroblocks, multiple U macroblocks, and multiple V macroblocks; reorganize the sub-block traversal order of each Y macroblock and the U macroblock and V macroblock of the image area where the Y macroblock is located are combined to obtain the target macroblock of the image area where the Y macroblock is located; according to the dependency relationship between the target macroblocks, the The traversal order of the sub-blocks is reorganized, and the sub-blocks in each target macroblock are traversed according to the reorganized order to obtain the brightness and chrominance of the image to be processed. The image processing method, device, equipment and computer-readable storage medium provided by the present invention realize parallel processing among Y macroblocks, U macroblocks, and V macroblocks.

The invention discloses a picture processing method, which comprises the following steps of acquiring an original image, and carrying out virtual rotation on the original image in order to obtain a rotating image, wherein the rotating image comprises a plurality of macro blocks with no data dependence each other; sequentially acquiring Y channel data and UV channel data of each macro block, and carrying out macro block compression operation on the Y channel data and the UV channel data in order to obtain a compressed macro block; and acquiring a WebP picture according to boundary data of eachcompressed macro block. According to the picture processing method disclosed by the invention, the data dependence between the macro blocks of a WebP algorithm is removed by realizing virtual rotationof the image, and parallel data processing between the macro blocks of a WebP lossy compression algorithm is achieved; and through parallel processing of the Y channel data and the UV channel data, the efficiency of the WebP lossy compression is further improved. The invention further discloses a picture processing system, picture processing equipment and a computer readable storage medium, and the technical effects are also realized.