WO2011035658A1 - 一种透明图像的压缩和解压缩方法、装置和系统 - Google Patents
一种透明图像的压缩和解压缩方法、装置和系统 Download PDFInfo
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- WO2011035658A1 WO2011035658A1 PCT/CN2010/075918 CN2010075918W WO2011035658A1 WO 2011035658 A1 WO2011035658 A1 WO 2011035658A1 CN 2010075918 W CN2010075918 W CN 2010075918W WO 2011035658 A1 WO2011035658 A1 WO 2011035658A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/649—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding the transform being applied to non rectangular image segments
Definitions
- the present invention relates to the field of digital images, and in particular, to a method, apparatus and system for compressing and decompressing transparent images. Background of the invention
- Each pixel of these color digital images usually contains three color channel information of red (R), green (G), and blue (B), and each color channel information of each pixel generally needs to be represented by 8 bits. .
- Transparent images are widely used in Internet web page production and games. Based on general color digital images, an 8-bit transparent color channel is added to each pixel.
- the transparent color channel records the transparency information of the pixel, which can conveniently and flexibly realize the superposition and fusion of the image.
- the image background can be made transparent, and the color information of the web page itself can be used instead of the transparent color, so that the image and the web page background can be well integrated.
- image storage formats such as PNG (Por table Network Graphics), GIF (Graphics Interchange Format), etc., all support transparent color channels.
- digital image compression methods can be divided into lossy compression and lossless compression.
- Lossless compression does not have any information missing during compression and decompression, which can guarantee image quality without distortion, but its compression efficiency is low. Lossy compression will lose some information during compression, and sacrifice image quality to reduce data volume. , with higher compression efficiency.
- the transparent color channel and the color channel information of the transparent image are all losslessly compressed, such as PNG, GIF and other image storage formats.
- embodiments of the present invention provide a method, apparatus, and system for compressing and decompressing a transparent image.
- a method for compressing a transparent image comprising:
- Compressing the color channel compression information and the transparent color channel compression information to obtain a compressed transparent image Compressing the color channel compression information and the transparent color channel compression information to obtain a compressed transparent image.
- the combining the color channel compression information and the transparent color channel compression information into compressed data comprises:
- the compressed data format is: transparent color channel compression information length information, transparent color channel compression information, and color channel compression information, where The transparent color channel compression information length information is a preset number of bytes to represent the transparent color channel compression information length.
- the obtaining color channel information and transparent color channel information of the original transparent image includes:
- a method for decompressing a transparent image comprising: Obtaining a compressed transparent image, and parsing the compressed transparent image to obtain color channel compression information and transparent color channel compression information;
- the color channel information and the transparent color channel information are combined into a target format to obtain a decompressed transparent image.
- the parsing the compressed transparent image to obtain color channel compression information and transparent color channel compression information includes:
- the color channel information and the transparent color channel information are combined according to the format of the target image to obtain the decompressed transparent image.
- a compression device for a transparent image comprising:
- An obtaining module configured to obtain color channel information and transparent color channel information of the original transparent image
- a compression module configured to perform lossy compression on the color channel information to obtain color channel compression information, and perform lossless compression on the transparent color channel information Obtaining transparent color channel compression information
- a data synthesizing module configured to synthesize the color channel compression information and the transparent color channel compression information to obtain a compressed transparent image.
- the data synthesizing module includes:
- a data format synthesizing unit configured to compress the color channel compression information and the transparent color channel compression information according to a compressed data format, where the compressed data format is: transparent color channel compression information length information, transparent color channel compression information And the color channel compression information, wherein the transparent color channel compression information length information is a preset number of bytes to represent the transparent color channel compression information length.
- a decompression device for a transparent image comprising:
- a parsing module configured to acquire the compressed transparent image, and parse the compressed transparent image to obtain color channel compression information and transparent color channel compression information;
- a decompression module configured to perform lossy decompression on the color channel compression information to obtain color channel information, and perform non-destructive decompression on the transparent color channel compression information to obtain transparent color channel information;
- a format synthesis module configured to perform the target format synthesis on the color channel information and the transparent color channel information to obtain a decompressed transparent image.
- the parsing module specifically includes:
- a first acquiring unit configured to acquire channel compression information length information in the compressed transparent image
- a second acquiring unit configured to acquire the transparent color channel compression information according to the channel compression information length information
- a third acquiring unit configured to continue to acquire the color channel compression information after acquiring the transparent color channel compression information.
- the format synthesis module specifically includes:
- a fourth acquiring unit configured to acquire the color channel information and the transparent color channel information
- a format synthesizing unit configured to synthesize the color channel information and the transparent color channel information according to a format of the target image, to obtain the Unzip the transparent image.
- a compression system for a transparent image comprising: a compression device and a decompression device, wherein the compression device is configured to acquire color channel information and transparent color channel information of an original transparent image; Loss compression obtains color channel compression information, and performs lossless compression on the transparent color channel information to obtain transparent color channel compression information; and compresses the color channel compression information and the transparent color channel compression information to obtain a compressed transparent image;
- the decompressing device is configured to acquire the compressed transparent image, and parse the compressed transparent image to obtain the color channel compression information and the transparent color channel compression information; and the color channel compression information is performed Decompressing and decompressing to obtain the color channel information, performing non-destructive decompression on the transparent color channel compression information to obtain the transparent color channel information; synthesizing the color channel information and the transparent color channel information into a target format to obtain a decompression Transparent image.
- the compression device includes
- An obtaining module configured to obtain color channel information and transparent color channel information of the original transparent image
- a compression module configured to perform lossy compression on the color channel information to obtain color channel compression information, and perform lossless compression on the transparent color channel information Obtaining transparent color channel compression information
- a data synthesizing module configured to synthesize the color channel compression information and the transparent color channel compression information to obtain a compressed transparent image.
- the data synthesizing module includes:
- a data format synthesizing unit configured to compress the color channel compression information and the transparent color channel compression information according to a compressed data format, where the compressed data format is: transparent color channel compression information length information, transparent color channel compression information And the color channel compression information, wherein the transparent color channel compression information length information is a preset number of bytes to represent the transparent color channel compression information length.
- the decompression device includes
- a parsing module configured to acquire the compressed transparent image, and parse the compressed transparent image to obtain color channel compression information and transparent color channel compression information;
- a decompression module configured to perform lossy decompression on the color channel compression information to obtain color channel information, and perform non-destructive decompression on the transparent color channel compression information to obtain transparent color channel information;
- a format synthesis module configured to perform the target format synthesis on the color channel information and the transparent color channel information to obtain a decompressed transparent image.
- the parsing module specifically includes:
- a first acquiring unit configured to acquire channel compression information length information in the compressed transparent image
- a second acquiring unit configured to acquire the transparent color channel compression information according to the channel compression information length information
- a third acquiring unit configured to continue to acquire the color channel compression information after acquiring the transparent color channel compression information.
- the format synthesis module specifically includes:
- a fourth acquiring unit configured to acquire the color channel information and the transparent color channel information
- a format synthesizing unit configured to: use the color channel information and the transparent color channel information according to a target The format of the image is synthesized to obtain the decompressed transparent image.
- the solution provided by the embodiment of the present invention adopts lossless compression on the transparent color channel information of the transparent image, and adopts lossy compression on each color channel information, and organizes the compressed transparent color channel information and color channel information according to a specific format to remove
- the redundancy included in the image information improves the compression efficiency of the transparent image, thereby reducing the storage space and bandwidth resource consumption during image storage and network transmission, and the transparent color channel information is not lost during the compression process, and does not affect the image.
- Subjective quality BRIEF DESCRIPTION OF THE DRAWINGS
- FIG. 1 is a schematic flow chart of a transparent image compression method according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic structural diagram of a transparent image compression apparatus according to Embodiment 1 of the present invention.
- FIG. 3 is a schematic flowchart of a transparent image decompression method according to Embodiment 1 of the present invention.
- FIG. 4 is a schematic structural diagram of a transparent image decompressing apparatus according to Embodiment 1 of the present invention.
- FIG. 5 is a schematic flowchart of a transparent image compression and decompression method according to Embodiment 2 of the present invention
- FIG. 6 is a schematic diagram of a compression apparatus according to Embodiment 3 of the present invention
- FIG. 7 is a schematic diagram of a decompression device according to Embodiment 3 of the present invention.
- FIG. 8 is a schematic structural diagram of an analysis module according to Embodiment 3 of the present invention.
- FIG. 9 is a schematic structural diagram of a format synthesis module according to Embodiment 3 of the present invention.
- Figure 10 is a schematic diagram of a system provided in Embodiment 4 of the present invention. Mode for carrying out the invention
- the embodiment of the present invention provides a method for compressing a transparent image, which uses lossless compression for transparent color channel information and lossy compression for each color channel information. And organize the compressed transparent channel letter in a specific format Information and color channel information, thereby improving the compression efficiency of transparent images.
- the compression method includes:
- the original transparent image needs to be parsed, and the transparent color channel information and each color channel information are separated.
- the original transparent image is parsed, and the image processing software or other forms of tools may be used, as long as the transparent color channel information can be separated.
- the color channel information is not limited in this embodiment of the present invention.
- the color channel information and the transparent color channel information of the original transparent image are obtained by: decompressing the original transparent image by using a decompressing format corresponding to the original transparent image compression format to obtain original transparent image information;
- the color channel information and the transparent color channel information of the original transparent image are separated from the original transparent image information.
- the color channel information in the embodiment of the present invention refers to three color channel information of R (red), G (green), and B (blue), and each color channel information of each pixel generally uses 8 bits. It is indicated that the transparent color channel information is generally also represented by 8 bits.
- the lossless compression of the transparent color channel information may be performed by using the commonly used LZW compression to obtain the transparent color channel compression data, and other lossless compression formats may be used, which are not limited in the embodiment of the present invention; lossy compression such as JPEG2000 is used for each color channel information.
- the lossy compression, the JPEG2000 compressed data is obtained, or the JPEG lossy compression is used, and the JPEG compressed data is obtained.
- Other lossy compression formats may also be used, which are not limited in the embodiment of the present invention.
- the color channel compression information and the transparent color channel compression information are combined into compressed data, which are:
- the color channel compression information and the transparent color channel compression information are compressed according to the compressed data format.
- the compressed data format is: transparent color channel compression information length information, transparent color channel compression information, and color channel compression information, wherein the transparent color channel compression information length information is a preset number of bytes to represent the transparent color channel compression information length.
- the original transparent image is parsed in the original format, and then the LZW compression of the transparent color channel information is performed respectively to perform JEEG2000 compression on each color channel information, and the transparent color channel is compressed and JPEG2000.
- the data is compressed and synthesized to obtain transparent image compressed data.
- FIG. 3 is a schematic diagram of a process for implementing a transparent image decompression according to the present invention, and the specific process is as follows:
- the decompression system of the transparent image needs to know the corresponding compressed data format in advance, or notify the compression system of the transparent image data compression format by sending a notification message during the decompression process.
- the non-destructive decompression of the transparent color channel compressed data may be performed by using a common LZW decompression to obtain transparent color channel information, and other non-destructive decompression formats may be used, but the non-destructive decompression format adopted by the method must be used in step 102.
- the lossless compression format is consistent, otherwise the decompression process of the compressed data of the transparent color channel cannot be realized.
- the lossy decompression of the compressed data of each color channel can be decompressed by JPEG2000 to obtain the color channel information of the JPEG2000 format. Or use JPEG decompression to get JPEG-style color channel information.
- the lossy decompression format of other formats can also be used, but the lossy decompression format used must be consistent with the lossy compression format used in step 102. Otherwise, the decompression process of the compressed data of each color channel cannot be realized.
- Lossless decompression of transparent color channel compressed data and lossy compression of color channel data Decompression can be performed in parallel at the same time. It is also possible to perform lossless decompression on the transparent color channel compressed data and then lossy decompress the compressed data of each color channel, or firstly perform lossy decompression on each color channel compressed data and then transparently
- the channel compression data is subjected to lossless decompression, and the sequence of the decompression process is not limited in the embodiment of the present invention.
- the transparent images of each format have their own specific format.
- the transparent image of PNG and the transparent image of G IF have different formats, so the decompressed transparent will be according to the target image format required for the actual application.
- the color channel information and the decompressed color channel information are synthesized according to the target image format to obtain a decompressed transparent image.
- a compressed image of a transparent image of PNG can be synthesized into a transparent image of the GI F format in accordance with the GI F format.
- FIG. 4 is a schematic structural diagram of a transparent image decompressing apparatus of the present invention: First, the compressed image format is parsed for the transparent image compressed data, and then the LZW decompressed is performed on the transparent color channel compressed data, and the JEEG2000 decompressed the compressed data of each color channel. And combining the decompressed transparent color channel information and each color channel information into a specific format to obtain a target image.
- the method provided by the embodiment of the present invention adopts lossless compression on the transparent color channel information of the transparent image, and adopts lossy compression on each color channel information, and organizes the compressed transparent color channel information and color channel information according to a specific format to remove
- the redundancy included in the image information improves the compression efficiency of the transparent image, thereby reducing the storage space and bandwidth resource consumption during image storage and network transmission, and the transparent color channel information is not lost during the compression process, and does not affect the image.
- Subjective quality Example 2
- FIG. 5 is a schematic flow chart of the method of Embodiment 2, including compression and decompression of a transparent image: wherein 501 - 503 are compression processes of transparent images, and 504 - 506 are decompression processes of transparent images.
- the color channel information in the embodiment of the present invention refers to three color channel information of R (red), G (green), and B (blue), and each color channel information of each pixel generally uses 8 bits. It is indicated that the transparent color channel information is generally also represented by 8 bits.
- transparent image processing software or other processing tools are different according to the original format of each image and corresponding to different formats.
- the commonly used transparent image format is mainly transparent image of PNG format and GIF format.
- Transparent image for other image formats that support transparent color channel information, the original image can be parsed to separate transparent color channel information and color channel information.
- the original transparent image in the embodiment of the present invention refers to a transparent image in a PNG format or a transparent image in a GIF format
- a transparent image in a PNG format and a transparent image in a GIF format are themselves a lossless compressed image format, that is, PNG.
- the transparent image of the format and the transparent image of the GIF format are already compressed image formats.
- the original transparent image of the PNG format or the original of the GIF format is required.
- the transparent image is subjected to lossless decompression to obtain source data of the transparent image, and then separated to obtain transparent color channel information and each color channel information.
- the digital image compression method can be divided into lossy compression and lossless compression.
- Lossless compression does not have any information missing during compression and decompression, which can guarantee image quality without distortion, but its compression efficiency is low. Lossy compression will lose some information during compression, and sacrifice image quality to reduce data volume. , with higher compression efficiency.
- the still image compression standard JPEG and JPEG2000 are algorithms that use lossy compression to effectively compress the amount of image data while ensuring that the subjective quality of the image is not significantly affected.
- JPEG2000 is the latest still image compression standard, and its compression efficiency is significantly higher than JPEG, which can achieve better visual effects at low bit rates.
- the redundancy of image data mainly manifests as: spatial redundancy caused by correlation between adjacent pixels in the image; spectral redundancy caused by correlation of different color planes or spectral bands; human visual system for image information
- the visual redundancy of the less sensitive part Since the color channel information between each pixel has large spatial redundancy, spectral redundancy and visual redundancy, the transparent color channel information of the image usually has a large number of consecutive equal transparent color channel pixel values, which is lossless compression.
- the compression efficiency is high, and humans have strong visual sensitivity to the transparent color channel information, so the color channel information is lossyly compressed and the transparent color channel information is losslessly compressed.
- the conventional LZW compression can be used to obtain the transparent color channel compression data, and other lossless compression formats can also be used, which are not limited in the embodiment of the present invention; the lossy compression is used for each color channel information, such as JPEG2 QQQ. Loss compression, JPEG2 QQQ compressed data or JPEG lossy compression is used to obtain JPEG compressed data, and other lossy compression formats may be used, which are not limited in the embodiment of the present invention.
- Lossless compression of transparent color channel information and lossy compression of each color channel information can be performed simultaneously in parallel, or lossless compression of transparent color channel information and lossy compression of each color channel information or first color channel The information is subjected to lossy compression and then the lossless compression of the transparent color channel information.
- the sequence of the compression process is not limited in the embodiment of the present invention.
- 503 Compressing data on the transparent color channel and synthesizing the color channel compressed data to obtain transparent image compressed data.
- the format of the transparent image compression data used in the embodiment of the present invention is as shown in Table 1:
- the first is a 4-byte integer, which indicates the length of the transparent color channel compressed data, and then the transparent color channel compression data, and the color channel compression. data. For example, if the number of the first 4 bytes is 1 0, it can be known that the length of the transparent color channel compressed data is 10 bytes, then the data of the 5th to 14th bytes is the compressed data of the clear color channel. And the 15th
- the first four bytes are used to identify the length of the transparent color channel compressed data, and other bytes, such as three bytes or six bytes, may be set according to actual needs, which is not limited in this embodiment of the present invention.
- the transparent color channel compressed data and the color channel compressed data may be sequentially changed, that is, each color channel compressed data is compressed after the front transparent color channel is compressed. At this time, if the number of the first 4 bytes is 10, it is necessary to compress the data from the back 10 bytes to the transparent color channel, and the byte between the first 4 bytes and the last 10th byte. Compress data for each color channel.
- the length of the transparent color channel compressed data is represented by an integer of 4 bytes instead of representing the length of the compressed data of each color channel because the length of the compressed data of each color channel is generally larger than the transparent color channel compressed data.
- the length if it represents the length of each color channel compressed data, you need to take out more bytes, which will inevitably lead to an increase in the amount of data.
- step 503 After obtaining the transparent image compression data, according to the compressed transparent image data format in step 503, first reading the first 4 bytes to obtain the length information of the transparent color channel compressed data, and then reading the transparent color channel compressed data according to the length information. , then read if each color channel compresses the data. For example: Read the first 4 bytes to get the length of the transparent color channel compressed data is 15 bytes, then read 15 bytes from the 5th byte, that is, read to the 19th byte, the 5th The contents of the byte to the 19th byte are the transparent color channel compressed data; the 20th byte and subsequent contents compress the data for each color channel.
- the corresponding change in the step is to change the manner in which the transparent image is compressed. Therefore, for the decompression system of the transparent image, the data format used in the compression process of the transparent image, Must be consistent with the decompression process. If there are multiple formats, the decompression system needs to know the corresponding compressed data format in advance, or notify the decompression system to compress the transparent image data compression format by sending a notification message during the decompression process.
- 505 performing lossless decompression on the transparent color channel compressed data and performing lossy decompression on the compressed data of each color channel, respectively, to obtain transparent color channel information and each color channel information;
- the non-destructive decompression of the transparent color channel compressed data can be decompressed by the commonly used LZW to obtain transparent color channel information, and other non-destructive decompression formats can also be used, but the non-destructive decompression method is adopted.
- the reduced format must be consistent with the lossless compression format used in step 502, otherwise the decompression process for the transparent color channel compressed data cannot be achieved.
- the lossy decompression of the compressed data of each color channel can be decompressed by JPEG2000, and the color channel information of the JPEG2000 format is obtained. Or use JPEG decompression to get JPEG-style color channel information.
- the lossy decompression format of other formats may also be used, but the lossy decompression format used must be consistent with the lossy compression format used in step 502. Otherwise, the decompression process of the compressed data of each color channel cannot be implemented.
- Lossless decompression of transparent color channel compressed data and lossy decompression of compressed data of each color channel can be performed in parallel at the same time. It is also possible to perform lossless decompression on the transparent color channel compressed data and then damage the compressed data of each color channel. Decompressing, or performing lossy decompression on each color channel compressed data and then performing lossless decompression on the transparent color channel compressed data.
- the sequence of the decompression process is not limited in the embodiment of the present invention.
- the transparent images of each format have their own specific format.
- the transparent image of PNG and the transparent image of GIF have different formats, so the decompressed transparent color should be according to the target image format required by the actual application.
- the channel information and the decompressed color channel information are synthesized according to the target image format to obtain a decompressed transparent image.
- a compressed image of a transparent image of a PNG can be synthesized into a transparent image of a GIF format in accordance with the GIF format.
- the above steps 504-506 are processes for decompressing the transparent image compressed data
- the above steps 501-506 are processes for compressing the original transparency for transmission and storage, and decompressing the compressed transparent image.
- the method provided by the embodiment of the present invention adopts lossless compression on the transparent color channel information of the transparent image, and adopts lossy compression on each color channel information, and organizes the compressed transparent color channel information and color channel information according to a specific format to remove
- the redundancy included in the image information improves the compression efficiency of the transparent image, thereby reducing the storage space and bandwidth resource consumption during image storage and network transmission, and the transparent color channel information is not lost during the compression process, and does not affect the image.
- Subjective quality Example 3
- the embodiment of the present invention provides a compression device for a transparent image.
- the device includes: an acquisition module 601, configured to acquire color channel information and transparent color channel information of an original transparent image; and a compression module 602, configured to The channel information is subjected to lossy compression to obtain color channel compression information, and the transparent color channel information is losslessly compressed to obtain transparent color channel compression information;
- the data synthesizing module 603 is configured to compress the color channel compression information and the transparent color channel compression information to obtain a compressed transparent image.
- the data synthesis module 603 includes:
- the data format synthesizing unit is configured to compress the color channel compression information and the transparent color channel compression information according to the compressed data format, and the compressed data format is: the transparent color channel compresses the information length information, and then the transparent color channel compression information and the color channel respectively. Compressed information, wherein the transparent color channel compression information length information is a preset number of bytes to represent the length of the transparent color channel compression information.
- the embodiment of the present invention further provides a transparent image decompression device.
- the device further includes:
- the parsing module 704 is configured to obtain a compressed transparent image, and parse the compressed transparent image to obtain color channel compression information and transparent color channel compression information;
- the decompression module 705 is configured to perform lossy decompression on the color channel compression information to obtain color channel information, and perform non-destructive decompression on the transparent color channel compression information to obtain transparent color channel information;
- the format synthesis module 706 is configured to perform color synthesis of the color channel information and the transparent color channel information to obtain a decompressed transparent image.
- the first obtaining unit 7041 is configured to obtain channel compression information length information in the compressed transparent image;
- the second acquiring unit 7042 is configured to obtain transparent color channel compression information according to the channel compression information length information;
- the third obtaining unit 7043 is configured to obtain the color channel compression information after acquiring the transparent color channel compression information.
- the fourth obtaining unit 7061 is configured to acquire the color channel information and the transparent color channel information.
- the format synthesizing unit 7062 is configured to synthesize the color channel information and the transparent color channel information according to the format of the target image to obtain a decompressed transparent image.
- the device provided by the embodiment of the invention adopts lossless compression on the transparent color channel information of the transparent image, adopts lossy compression on each color channel information, and organizes the compressed transparent color channel information and color channel information according to a specific format to remove
- the redundancy included in the image information improves the compression efficiency of the transparent image, thereby reducing the storage space and bandwidth resource consumption during image storage and network transmission, and the transparent color channel information is not lost during the compression process, and does not affect the image.
- the embodiment of the present invention further provides a transparent image compression system.
- the system includes: a compression device 1 001 and a decompression device 1 002, wherein
- the compression device 1 001 is configured to obtain color channel information and transparent color channel information of the original transparent image; perform lossy compression on the color channel information to obtain color channel compression information, and perform lossless compression on the transparent color channel information to obtain transparent color channel compression information; Compressing the color channel compression information and the transparent color channel compression information to obtain a compressed transparent image;
- the decompression device 1 002 is configured to obtain a compressed transparent image, and parse the compressed transparent image to obtain color channel compression information and transparent color channel compression information; perform lossy decompression on the color channel compression information to obtain color channel information, and be transparent
- the color channel compression information is subjected to lossless decompression to obtain transparent color channel information; the color channel information and the transparent color channel information are combined into a target format to obtain a decompressed transparent image.
- the system provided by the embodiment of the present invention adopts lossless compression on the transparent color channel information of the transparent image, and adopts lossy compression on each color channel information, and organizes the compressed transparent color channel information and color channel information according to a specific format to remove
- the redundancy included in the image information improves the compression efficiency of the transparent image, thereby reducing the storage space and bandwidth resource consumption during image storage and network transmission.
- the transparent color channel information is not lost during the compression process, and does not affect the subjective quality of the image.
- the term "receiving" in the embodiment of the present invention may be understood as actively acquiring information from other modules or receiving information sent by other modules.
- modules in the apparatus of the embodiments may be described in the apparatus of the embodiments as described in the embodiments, and the corresponding changes may be made in one or more apparatuses different from the embodiment.
- the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
- Some of the steps in the embodiments of the present invention may be implemented by using software, and the corresponding software program may be stored in a readable storage medium, such as an optical disk or a hard disk.
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CN102231834A (zh) * | 2011-06-27 | 2011-11-02 | 深圳市茁壮网络股份有限公司 | 一种apng文件在数字电视系统中的处理方法和装置 |
CN102231836B (zh) * | 2011-06-27 | 2013-06-26 | 深圳市茁壮网络股份有限公司 | 一种gif文件在数字电视系统中的处理方法和装置 |
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GB2575436B (en) * | 2018-06-29 | 2022-03-09 | Imagination Tech Ltd | Guaranteed data compression |
CN109271540B (zh) * | 2018-09-26 | 2021-05-25 | 浙江万朋教育科技股份有限公司 | 一种结合图片有损压缩和记录透明度信息的实现方法 |
CN111061722B (zh) * | 2018-10-16 | 2023-06-06 | 阿里巴巴集团控股有限公司 | 一种数据压缩、数据解压缩方法、装置及设备 |
CN113645469B (zh) * | 2020-05-11 | 2022-06-24 | 腾讯科技(深圳)有限公司 | 图像处理方法、装置、智能终端及计算机可读存储介质 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1592347A (zh) * | 2003-08-25 | 2005-03-09 | 国际商业机器公司 | 幻灯图像发送、接收设备,收发系统,编码和解码装置 |
US20080112634A1 (en) * | 2006-11-13 | 2008-05-15 | Samsung Electronics Co., Ltd. | Method and apparatus for image processing |
US20080304762A1 (en) * | 2007-06-06 | 2008-12-11 | Canon Kabushiki Kaisha | Image processing apparatus and method |
CN101742317A (zh) * | 2009-12-31 | 2010-06-16 | 北京中科大洋科技发展股份有限公司 | 一种带阿尔法透明通道的视频压缩编码方法 |
CN101754034A (zh) * | 2008-12-05 | 2010-06-23 | 凌阳多媒体股份有限公司 | 透明属性的离散余弦转换压缩图数据的解压缩系统及方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7184588B2 (en) * | 2003-06-19 | 2007-02-27 | Microsoft Corporation | System and method for minimizing display image size by approximating pixel display attributes |
CN100345164C (zh) * | 2004-05-14 | 2007-10-24 | 腾讯科技(深圳)有限公司 | 一种动态虚拟形象的合成方法 |
-
2009
- 2009-09-25 CN CN 200910093701 patent/CN102036059A/zh active Pending
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1592347A (zh) * | 2003-08-25 | 2005-03-09 | 国际商业机器公司 | 幻灯图像发送、接收设备,收发系统,编码和解码装置 |
US20080112634A1 (en) * | 2006-11-13 | 2008-05-15 | Samsung Electronics Co., Ltd. | Method and apparatus for image processing |
US20080304762A1 (en) * | 2007-06-06 | 2008-12-11 | Canon Kabushiki Kaisha | Image processing apparatus and method |
CN101754034A (zh) * | 2008-12-05 | 2010-06-23 | 凌阳多媒体股份有限公司 | 透明属性的离散余弦转换压缩图数据的解压缩系统及方法 |
CN101742317A (zh) * | 2009-12-31 | 2010-06-16 | 北京中科大洋科技发展股份有限公司 | 一种带阿尔法透明通道的视频压缩编码方法 |
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