CN104243886B - A kind of high speed image parsing and video generation method based on plug-in part technology - Google Patents
A kind of high speed image parsing and video generation method based on plug-in part technology Download PDFInfo
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Abstract
The high speed image parsing and video generation technique that the invention discloses a kind of based on plug-in part technology, A:Utilize insert design unified interface：The RAW files of different-format are converted into unified standard RAW file structures, uniform data interface.B:RAW files pre-process：Different conversions can be selected to export picture format according to user's needs, and choose whether scaling pictures, addition watermark and generate video.C:RAW image processing：After user demand determines, according to user demand, start to handle RAW files.Using RAW files as object, using unique plug-in unit and dual-cache mechanism, the software technology of rapid translating and video generation of the different RAW files to designated pictures format is realized.Plug-in part technology realizes the RAW image document analysis of different-format, the application of extended software and the versatility for enhancing software；Dual-cache mechanism realizes that digital independent is carried out with processing cross-circulation, greatlys improve the analyzing efficiency of software.
Description
A kind of high speed image parsing and video generation method based on plug-in part technology
Technical field
The present invention relates to technical field of image processing more particularly to a kind of high speed image based on plug-in part technology to parse and regard
Frequency generation method.
Background technology
At this stage, it is reached its maturity using the algorithm of the information such as the movement velocity of image calculation object, posture, to picture quality
Requirement also with calculation accuracy be continuously improved.Since RAW formats are to image acquired original, the spy of lossless storage and high plasticity
Point is widely used in the digital camera and video camera of industrial technical field.It is different from the picture formats such as JPG, RAW files be with
Time is the digitized video collection without any compression processing of axis, has recorded the raw information of digital sensor.But it is being follow-up
While algorithm provides the image data of high quality, there is also corresponding limitations by RAW.RAW format-patterns can not be counted directly
Calculation machine is shown, is needed using professional RAW image switching software, while the RAW file formats that different vendor defines lack compatibility,
Therefore designing a image switching software that can parse different RAW file formats just seems extremely important.
The equipment such as current digital camera and the application software of picture editting of progress still image etc. are usually to one
The file of the only file format comprising a static image data is handled in a file, so, do not considered mostly at one
The case where there are multiple images data in file.The Exif of one of widely used image file format in digital camera etc.
Standard defines, and only includes an image in one file other than guide look display is with downscaled images (thumbnail image)
Data.
In contrast, it is proposed that following technology：By the image data (main image data) of primary picture (master image)
It is (following appropriate it to be generated as an image file with the image data (auxiliary image data) with the associated sub-picture of the master image
Referred to as multiimage file), and it is recorded in recording medium etc..For example, in Japanese Unexamined Patent Publication 2005-252754 bulletins
Describe following technology：Multiple JPEG images are collected in a multiimage file to prevent the increase of number of files, into
And in the beginning of multiimage file to store the master image (multiple images collected hereof according to the format of Exif standards
In main (representativeness) an image), also, the extension for making file itself is entitled " JPG ".
As the image file for storing multiple JPEG data, by using this extension entitled " JPG " and from text
The ending of part beginning to master image is the structure of structure identical with existing JPEG formats, to keep and handle JPG files
Existing image processing apparatus and application program between interchangeability.Moreover, can by each other with relevance image group,
Such as the multiple images group that shooting Same Scene is obtained under several different levels of exposure comprising correct exposure is recorded as one
A multiimage file, so, it has the following advantages that：Number of files can be reduced, file management becomes easy, in readding for image group
The convenience of user can be increased whens looking at, replicate, transmitting, preserving etc..
But in the photographic devices such as the digital camera of current production, as the record format of still image, including
Above-mentioned this JPEG data use the JPG files according to Exif standards as standard.In turn, in the camera shooting of various products
In device, there is also the photographic devices of such as lower structure：It is other than the JPG files, additionally it is possible to will be shot and be obtained by photographing element
Image be converted to after digital signal in the state of RAW images also save as RAW files.It is filled in such camera shooting
In setting, it is configured in most cases, can only preserves the logging mode of JPG files according to selection is wished, only preserve RAW files
Logging mode, preserve JPG files and RAW file both sides logging mode etc..
The multiimage file of this storage multiple images recorded in above-mentioned Japanese Unexamined Patent Publication 2005-252754 bulletins is true
The interchangeability of JPG files, so, as described above, can be shown in existing image processing apparatus and application program,
Editor preserves.But pass through above-mentioned this existing image processing apparatus and application program pair based on current Exif standards
Multiimage file recorded in the bulletin is into edlin and when preserving, although master image is saved, the pair other than master image
Image is possible to be deleted or damage.
It is therefore preferable that following technology：Even if due to utilizing existing image processing apparatus and application program to file
It is handled and has damaged auxiliary image data, can also restore the auxiliary image data (restoring multiimage file) of the damage
In the case of, it can be restored.
Invention content
The high speed image parsing and video generation method that the object of the present invention is to provide a kind of based on plug-in part technology, can be with
RAW files are that object realizes different RAW files to the quick of designated pictures format using unique plug-in unit and dual-cache mechanism
The software technology that conversion and video generate；Plug-in part technology realizes the RAW image document analysis of different-format, the application of extended software
With the versatility of enhancing software；Dual-cache mechanism realizes that digital independent is carried out with processing cross-circulation, greatlys improve software
Analyzing efficiency.
The technical solution adopted by the present invention is：
A kind of high speed image parsing and video generation method based on plug-in part technology, include the following steps：
A:Utilize insert design unified interface：The RAW files of different-format are converted into unified standard RAW file knots
Structure, uniform data interface.
B:RAW files pre-process：According to user's needs, different conversions is selected to export picture format, and choose whether
Scaling pictures, addition watermark and generation video.
C:RAW image processing：After user demand determines, according to user demand, start to handle RAW files.
The processing procedure of the step C：
Open up two pieces of buffer areas in memory first, the storage of each buffer area is a frame pixel data；Create two
File data is written into buffer area for a thread, thread 1, and thread 2 handles buffer area data, and thread 2 is to pixel data
Processing procedure be：
A) raw pixel data is zoomed in and out, according to the pixel format conversion method selected in advance RAW pixel formats
It is converted into BMP sequences；
B) transformed pixel data synthesizes a frame BMP bitmaps plus the BMP file headers defined in advance；
C) watermark is added on BMP bitmap datas synthesize new BMP bitmap datas；
D) a framing bit diagram data is written into avi file.
A kind of high speed image parsing and video generation method based on plug-in part technology, including multiple parsing card modules, it is more
The signal output end of a parsing card module is all connected with the signal input part of unified interface module, and the signal of unified interface module is defeated
Outlet connects the signal input part of preprocessing module, and the signal output end image processing module and image of preprocessing module generate mould
The input terminal of the signal output end Connection Cache module of the signal input part of block, image processing module and image generation module.
The present invention be it is a be based on object oriented designing thought, using RAW files as object, use unique plug-in unit and double
Caching technology, the software technology that the rapid translating and video for realizing different RAW files to designated pictures format generate.Plug-in part technology
Realize the RAW image document analysis of different-format, the application of extended software and the versatility for enhancing software；Dual-cache mechanism is realized
Digital independent is carried out with processing cross-circulation, greatlys improve the analyzing efficiency of software.
Due to the heterogeneity of RAW formatted files, the extension of the data structure and file of the RAW formatted files of different vendor
Name is also not quite similar.The software designed herein is based on Object--oriented method, is schemed to RAW using plug-in part technology and dual-cache mechanism
As file is parsed, makes software that not only there is very strong versatility, is not only suitable for the RAW image document analysis of different-format,
The conversion being suitable for again between RAW and other different picture formats, and the analyzing efficiency of image is substantially increased, have very strong
Use value.
Description of the drawings
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the Double buffer dissection process flow chart of the present invention.
Specific implementation mode
As illustrated in fig. 1 and 2, the present invention includes multiple parsing card modules, the signal output end of multiple parsing card modules
It is all connected with the signal input part of unified interface module, the signal of the signal output end connection preprocessing module of unified interface module is defeated
Enter end, the signal input part of the signal output end image processing module and image generation module of preprocessing module, image procossing mould
The input terminal of the signal output end Connection Cache module of block and image generation module.
The present invention is based on the parsing of the high speed image of plug-in part technology and video generation methods, include the following steps：
A:Utilize insert design unified interface：The RAW files of different-format are converted into unified standard RAW file knots
Structure, uniform data interface.
B:RAW files pre-process：According to user's needs, different conversions is selected to export picture format, and choose whether
Scaling pictures, addition watermark and generation video.
C:RAW image processing：After user demand determines, according to user demand, start to handle RAW files.
The processing procedure of the step C：
Open up two pieces of buffer areas in memory first, the storage of each buffer area is a frame pixel data；Create two
File data is written into buffer area for a thread, thread 1, and thread 2 handles buffer area data, and thread 2 is to pixel data
Processing procedure be：
A) raw pixel data is zoomed in and out, according to the pixel format conversion method selected in advance RAW pixel formats
It is converted into BMP sequences；
B) transformed pixel data synthesizes a frame BMP bitmaps plus the BMP file headers defined in advance；
C) watermark is added on BMP bitmap datas synthesize new BMP bitmap datas；
D) a framing bit diagram data is written into avi file.
The present invention is divided into two parts according to function.First part is Interface design module, is arranged with card format different
RAW files parsing format, the essence of plug-in unit be under the premise of not changing procedure subject to software function reinforce with
Expand, by defining one group of card i/f, plug-in unit is associated with main program, can be write for specific card i/f slotting
Part, and this plug-in unit is dynamically inserted in software systems, to realize the Function Extension of system；Second part is processing module（It is main
Program）, using RAW file as object, the parsing of reference format is carried out to RAW files and the picture of specified format, video generate.For
Raising processing speed uses dual-cache mechanism, opens up two pieces of buffer areas in memory, buffer size is by image size here
It determines, the storage of each buffer area is a frame image data；Create two threads, thread 1（Read thread）For by data
Buffer area, thread 2 is written（Handle thread）It is then used to handle the data in buffer area, detailed process is as shown in Figure 2.
The essence of plug-in unit is that software function is reinforced and expanded under the premise of not changing procedure subject, passes through definition
One group of card i/f associates plug-in unit with main program, can write plug-in unit for specific card i/f, and by this plug-in unit
It is dynamically inserted in software systems, to realize the Function Extension of system.
The plug-in unit that the present invention designs is the RAW files of different-format to be converted into unified RAW file structures, uniform data
Interface.Standard RAW files are made of file header and image data two parts, wherein file header to describe image data, including
The information of the length and width of image, the resolution ratio of frame number and pixel etc., image data are then the data informations of each pixel of image.
Present invention application Target-oriented thought is inserted for the different parsing plug-in unit of the RAW document designs of different-format, such as Sony parsings
Part is exactly that the RAW files that the camera of Sony companies generates are converted to reference format.
For step B, software second part（Main program）RAW files are handled according to specified parsing format, are wrapped
Include the picture for being converted into different-format, scaling pictures, addition watermark, generation video etc..
RAW files pre-process
1) according to user's needs, different conversions is selected to export picture format；
2) according to user's needs, scaling pictures and addition watermark are chosen whether.
RAW image processing
After the pretreatment of RAW files, according to user demand, start to handle RAW files.In order to improve processing speed,
The present invention uses dual-cache mechanism, opens up two pieces of buffer areas in memory, and buffer size is determined by image size, each is slow
Deposit area's storage is all a frame image data；Create two threads, thread 1（Read thread）For writing data into buffer area, line
Journey 2（Handle thread）It is then used to handle the data in buffer area, detailed process is as shown in Figure 2.
When RAW files pre-process, image converting method is provided with according to user's selection, thread 2 is to pixel data
Processing procedure is:
1) RAW pixels are converted into according to the pixel format conversion method selected in advance by a width picture；
2) picture is zoomed in and out and adds watermark according to demand.
Below to a kind of high speed image parsing and video generation method based on plug-in part technology proposed by the present invention, in conjunction with attached
Figure is described in detail.Include the following steps：
1. utilizing insert design unified interface：The RAW files of different-format are converted into unified standard RAW file knots
Structure, uniform data interface.
2. RAW files pre-process：According to user's needs, different conversions is selected to export picture format, and choose whether
Scaling pictures, addition watermark and generation video.
3. RAW image is handled：After user demand determines, according to user demand, start to handle RAW files.
The present invention can according to the user's choice, provide the conversion output of the video formats such as WMV, RMVB, AVI, MPEG.Depending on
Frequency product process is similar to RAW document analysis flows, in picture processing procedure, calls corresponding video to generate in thread 2 and calculates
Standard RAW files are converted into video file by method.
A kind of real-time example of the present invention is further described below：
It is exactly that the RAW files that the camera of Sony companies generates are converted to mark using Sony parsing plug-in units in the present embodiment
Then document analysis at BMP pictures and is generated AVI format video file by quasiconfiguaration, including file header and data file.This reality
The step of example, is as follows：
Step 1. unified interface
The RAW file formats that the camera of known Sony companies generates are arranged corresponding with file using Sony parsing plug-in units
Data structure：Data type and shared byte number, and result is saved in Sony.ini files；Then RAW files are read simultaneously
Cache file information is reference format, and RAW normative documents are made of file header and image data two parts, wherein file header to
Image data is described, including information, the image data such as resolution ratio of the length and width of image, frame number and pixel are then each pictures of image
The data information of vegetarian refreshments.
Step 2.RAW files pre-process
Whether picture is zoomed in and out, be, scaling multiple is set；Select BMP picture formats；Whether added on picture
Watermark is that word is arranged；Selection generates AVI format video, and selects video file storage address that video name is arranged.Selection
After determination, BMP file headers and pixel format transformation are defined according to known picture length and width and scaling multiple, the head of avi file is set
File.
Step 3.RAW image procossings
The present invention opens up two pieces of buffer areas in memory, and the storage of each buffer area is a frame pixel data；It creates
File data is written into buffer area for two threads, thread 1（Read thread）, thread 2 handles buffer area data（Handle line
Journey）, thread 2 is to the processing procedure of pixel data：
A) raw pixel data is zoomed in and out, according to the pixel format conversion method selected in advance RAW pixel formats
It is converted into BMP sequences；
B) transformed pixel data synthesizes a frame BMP bitmaps plus the BMP file headers defined in advance；
C) watermark is added on BMP bitmap datas synthesize new BMP bitmap datas；
D) a framing bit diagram data is written into avi file.
RAW formatted files disunity from the beginning, the expansion of the data structure and file of the RAW formatted files of different vendor
Exhibition name is also not quite similar.The software designed herein is based on Object--oriented method, using plug-in part technology and dual-cache mechanism to RAW
Image file is parsed, and so that software is not only had very strong versatility, is not only suitable for the RAW image file solution of different-format
Analysis, but suitable for the conversion between RAW and other different picture formats, and the analyzing efficiency of image is substantially increased, have
Very strong use value.Table 1 is conventional analytic method and the comparison using Double buffer analytic technique under the conditions of same hardware device
As a result.
1 experimental result of table
| Method | Rate |
| Conventional method | 25 frames/second |
| Dual-cache mechanism | 50 frames/second |
Claims (2)
1. a kind of high speed image parsing and video generation method based on plug-in part technology, it is characterised in that：Include the following steps：
A:Utilize insert design unified interface：The RAW files of different-format are converted into unified standard RAW file structures, united
One data-interface；
B:RAW files pre-process：According to user's needs, different conversions is selected to export picture format, and choose whether to scale
Picture, addition watermark and generation video；
C:RAW image processing：After user demand determines, according to user demand, start to handle RAW files；
The processing procedure of the step C：
Open up two pieces of buffer areas in memory first, the storage of each buffer area is a frame pixel data；Create two lines
File data is written into buffer area for journey, thread 1, and thread 2 handles buffer area data, place of the thread 2 to pixel data
Reason process is：
A) raw pixel data is zoomed in and out, according to the pixel format conversion method selected in advance RAW pixel format conversions
At BMP sequences；
B) transformed pixel data synthesizes a frame BMP bitmaps plus the BMP file headers defined in advance；
C) watermark is added on BMP bitmap datas synthesize new BMP bitmap datas；
D) a framing bit diagram data is written into avi file.
2. high speed image parsing and video generation method according to claim 1 based on plug-in part technology, it is characterised in that：
Including multiple parsing card modules, the signal output end of multiple parsing card modules is all connected with the signal input of unified interface module
End, the signal input part of the signal output end connection preprocessing module of unified interface module, the signal output end of preprocessing module
The signal input part of image processing module and image generation module, the signal output end of image processing module and image generation module
The input terminal of Connection Cache module.
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| CN105159916A (en) * | 2015-07-20 | 2015-12-16 | 天脉聚源（北京）科技有限公司 | Picture playing method and apparatus |
| CN113132649B (en) * | 2019-12-31 | 2023-01-03 | 北京字节跳动网络技术有限公司 | Image generation method and device, electronic equipment and computer readable storage medium |
| CN111986282B (en) * | 2020-08-21 | 2024-06-07 | 上海二三四五网络科技有限公司 | Plug-in for opening HEIC format pictures, freeIMage and computer program thereof |
| CN113470791B (en) * | 2021-05-26 | 2022-04-22 | 透彻影像(北京)科技有限公司 | Full-section pathological image reading system |
| CN114760291B (en) * | 2022-06-14 | 2022-09-13 | 深圳乐播科技有限公司 | File processing method and device |
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