CN105957016B - A kind of method and device for being stretched to image - Google Patents
A kind of method and device for being stretched to image Download PDFInfo
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- CN105957016B CN105957016B CN201610430196.7A CN201610430196A CN105957016B CN 105957016 B CN105957016 B CN 105957016B CN 201610430196 A CN201610430196 A CN 201610430196A CN 105957016 B CN105957016 B CN 105957016B
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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- G06T3/40—Scaling the whole image or part thereof
- G06T3/4084—Transform-based scaling, e.g. FFT domain scaling
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Abstract
The invention discloses a kind of methods for being stretched to image, comprising the following steps: S1) configuration information and original image timing generation stretching image sampling time sequence are stretched according to image resolution ratio and stretch image timing；S2) reading original digital image data according to the stretching image sampling time sequence and cache is image buffer storage data；S3 image buffer storage data output) is read according to the stretching image timing and stretches image data.The present invention can quickly realize that carrying out horizontal stretch, stretched vertically or horizontal vertical to image stretches, and horizontal stretch, stretched vertically, horizontal vertical stretch 3 kinds of modes and support pixel replication mode and image replication mode, are greatly improved the efficiency and accuracy of image stretch.
Description
Technical field
The present invention relates to technical field of image signal processing, be more particularly related to it is a kind of for image resolution ratio into
The method and device that row horizontal stretch, stretched vertically or horizontal vertical stretch.
Background technique
Equipment, producing line are shown for the display demand for meeting some particular applications, such as automatic navigator, hand-held electronic
On need to produce the display modules of some special resolution ratio, in the production process of the display module of these special resolution ratio, need
It examines its display performance and carries out a screen detection.It is formed since these special resolution ratio can be stretched by normal resolution, institute
It is usually to be changed on the basis of the display module of common resolution ratio with the display module of these special resolution ratio in producing line
Into or be spliced, thus the display module of the display module of these special resolution ratio and common resolution ratio often have it is identical
Display characteristic, in display module producing line in order to detect these special resolution ratio display module display performance, need at this
Detection picture of the display as the display module of common resolution ratio compares detection in the display module of a little special resolution ratio.
Currently, the picture of this special resolution ratio is shown in producing line in the display module of these special resolution ratio,
Artificial modification original image is needed, each pixel of original image is copied into multiple pixels in horizontal, vertical direction, or
The original image is copied into multiple images in horizontal, vertical direction by person, then saves as new image again, then in these spies
It is shown in the display module of different resolution ratio, this method both took time and effort, and caused production efficiency low, and be easy error, such as certain
A pixel, which misses, not to be replicated, and shows mistake so as to cause picture.
Summary of the invention
In view of the above shortcomings of the prior art, the present invention discloses a kind of method and device for being stretched to image,
It can quickly realize that carrying out horizontal stretch, stretched vertically or horizontal vertical to image stretches, and horizontal stretch, stretched vertically, water
3 kinds of modes of flat stretched vertically support pixel replication mode and image replication mode, can greatly promote the efficiency of image stretch
And accuracy.
To achieve the above object, the present invention provides a kind of method for being stretched to image, comprising the following steps:
S1 configuration information) is stretched according to image resolution ratio and original image timing generates and stretches image sampling time sequence and tensile diagram
As timing；
S2) reading original digital image data according to the stretching image sampling time sequence and cache is image buffer storage data；
S3 image buffer storage data output) is read according to the stretching image timing and stretches image data.
As further alternative technical solution, above scheme further includes step S4: to the stretching image timing and the drawing
Image data is stretched to synchronize the stretching image clock signal of processing output synchronous transfer and stretch viewdata signal.
As further alternative technical solution, the image resolution ratio stretches configuration information packet in step S1 in above scheme
Horizontal stretch configuration-direct and horizontal stretch multiple N are included, wherein N is positive integer；Step S1 specifically includes the following steps:
According to the horizontal stretch configuration-direct and the horizontal stretch multiple N by row image timing every in the original image timing
The stretching that data effective district and blanking zone make N times obtains N times of horizontal stretch image timing；Meanwhile it will be in the original image timing
The blanking zone of every row image timing stretches, so that the blanking zone after the data effective district of every row image timing and stretching is held
The continuous time is identical as the duration of every row image timing in the N times of horizontal stretch image timing, obtains N times of horizontal stretch image
Sampling time sequence.
As further alternative technical solution, the image buffer storage data are read in step S3 in above scheme and are specifically included
Following steps:
It repeats to read each buffer address according to the N times of horizontal stretch image timing and according to the caching of original digital image data sequence
In image buffer storage data n times；
Alternatively,
It is recycled according to the N times of horizontal stretch image timing and according to the caching of row image data every in original digital image data sequence
Read the image buffer storage data n times in each buffer address of the row image data.
As further alternative technical solution, the image resolution ratio stretches configuration information packet in step S1 in above scheme
Stretched vertically configuration-direct and stretched vertically multiple M are included, wherein M is positive integer；Step S1 specifically includes the following steps:
S1a M-1) is inserted into after the original image timing according to the stretched vertically configuration-direct and the stretched vertically multiple M
The item original image timing is used as M times of stretched vertically image timing and M times of stretched vertically image sampling timing simultaneously；
Alternatively,
S1b) according to the stretched vertically configuration-direct and stretched vertically multiple M respectively in each row figure of the original image timing
M times of stretched vertically image timing is obtained as being inserted into the M-1 row row image timing after timing；Meanwhile it will be in the original image timing
The blanking zone of every row image timing stretches, so that the blanking zone after the data effective district of every row image timing and stretching is held
The continuous time is identical as the duration of every row image timing in the M times of stretched vertically image timing, obtains M times of stretched vertically image
Sampling time sequence.
As further alternative technical solution, the image buffer storage data are read in step S3 in above scheme and are specifically included
Following steps:
The M times of stretched vertically image timing according to step S1a and according to the caching of original digital image data sequence successively
Read the image buffer storage data in each buffer address；
Alternatively,
The M times of stretched vertically image timing according to step S1b and according to row image data every in original digital image data
Caching sequence circulation read the row image data each buffer address in image buffer storage data M times.
The present invention separately provides a kind of device for being stretched to image, including is set to a programmable logic device
In image stretch timing generation module, original digital image data generation module, image data cache module and stretch image data produce
Raw module；Wherein,
The image stretch timing generation module is used to stretch configuration information according to image resolution ratio and original image timing generates
It stretches image sampling time sequence and stretches image timing；
The original digital image data generation module is used to read original digital image data according to the stretching image sampling time sequence and by the original
It is image buffer storage data that caching in the image data cache module, which is written, in image data；
The stretching image data generating module is used to read image buffer storage data output according to the stretching image timing and draws
Stretch image data.
As further alternative technical solution, which includes the first image data cache sub-module
With the second image data cache sub-module, which includes that the first stretching image data generates submodule
Image data, which is stretched, with second generates submodule；Wherein,
The first image data cache sub-module is for adopting the original digital image data generation module according to horizontal stretch image
The original digital image data caching that sample timing is read is horizontal stretch image buffer storage data；
The first stretching image data generates submodule and is used to read the horizontal stretch figure according to horizontal stretch image timing
As data cached output level stretches image data；
The second image data cache sub-module is for adopting the original digital image data generation module according to stretched vertically image
The original digital image data caching that sample timing is read is stretched vertically image buffer storage data；
The second stretching image data generates submodule and is used to read the stretched vertically figure according to stretched vertically image timing
As data cached output stretched vertically image data.
As further alternative technical solution, which is also used to first tensile diagram
It is that horizontal vertical stretching image is data cached as data generate the horizontal stretch image data caching that submodule exports；Second drawing
It stretches image data generation submodule and is also used to read the horizontal vertical stretching data cached output level stretched vertically image of image
Data.
As further alternative technical solution, the first image data cache sub-module and second image data are cached
Submodule is two-port RAM.
The invention has the following advantages that
(1) present invention supports that carrying out horizontal stretch, stretched vertically and horizontal vertical to picture signal stretches, and level is drawn
It stretches, stretched vertically, horizontal vertical stretch and support pixel replication mode and image replication mode；
(2) present invention can be realized the rapid configuration to image stretch multiple and image stretch mode by upper layer；
(3) present invention can be realized by programmable logic device such as fpga chips, and stable and reliable in work, technical solution is easy
Realize have compared with high performance-price ratio；
(4) interface standards such as LVDS, MIPI, DP, V-BY-ONE can be directly changed into based on stretching image of the invention
Picture signal.
Detailed description of the invention
The LVDS that Fig. 1 embodiment of the present invention is used to generate more LINK (link) transmission mode stretches the device frame of picture signal
Frame figure；
Fig. 2 original image timing diagram of the embodiment of the present invention；
Fig. 3 embodiment of the present invention horizontal stretch-pixel replication mode timing diagram；
Fig. 4 embodiment of the present invention horizontal stretch-image replication mode timing diagram；
Fig. 5 embodiment of the present invention stretched vertically-image replication mode timing diagram；
Fig. 6 embodiment of the present invention stretched vertically-pixel replication mode timing diagram；
Fig. 7 embodiment of the present invention horizontal vertical stretching-pixel replication mode timing diagram；
Fig. 8 embodiment of the present invention horizontal vertical stretching-image replication mode timing diagram.
In figure: upper-layer configured module -1, original image timing generation module -2, image stretch timing generation module -3, original image
As data read-write control module -4, storage chip -5 high speed DDR, original digital image data generation module -6, the first image data caching
Submodule -7, the first stretches image data and generates submodule -8, the second image data cache sub-module -9, the second stretching picture number
According to submodule -10 is generated, image output module -11, LINK image conversion module -12, LVDS picture signal conversion module-is stretched
13。
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
The present embodiment is illustrated so that the LVDS for generating more LINK (link) transmission mode stretches picture signal as an example, is needed
Illustrate, DP, MIPI or V-BY-ONE can also be converted into using the stretching picture signal that the method for the present invention or device generate
Etc. interface standards picture signal, be by the picture signal that picture signal is converted into the interface standards such as DP, MIPI or V-BY-ONE
The prior art well known to professional and technical personnel in the field, the present embodiment no longer illustrate one by one.
As shown in Figure 1, stretching image based on the LVDS that one kind of the invention is used to generate more LINK (link) transmission mode
The device of signal, including a fpga chip and the high speed DDR storage chip 5 being electrically connected with the fpga chip, the fpga chip
In be provided with upper-layer configured module 1, original image timing generation module 2, image stretch timing generation module 3, original digital image data read
Write control module 4, original digital image data generation module 6, the first image data cache sub-module 7, the second image data caching submodule
Block 9, first stretches image data and generates the stretching image data generation of submodule 8, second submodule 10, stretches image output module
11, LINK image conversion module 12 and LVDS picture signal conversion module 13.It should be noted that being used in the present embodiment
Fpga chip is a kind of preferred embodiment, and fpga chip can also use the programmable logic device such as APAL, GAL, CPLD substitution.
In above-described embodiment, after apparatus of the present invention power on, former resolution image data is packaged, is transmitted by upper layer software (applications)
Former resolution image data packet is generated after coding, verification and sends out the original resolution image data packet by upper-layer configured module 1
It is sent to original digital image data Read-write Catrol module 4, original digital image data Read-write Catrol module 4 carries out the original resolution image data packet
It is stored in high speed DDR storage chip 5 after being reduced into original digital image data after unpacking, decoding, original digital image data Read-write Catrol module 4 will
After whole original digital image data deposit high speed DDR storage chips 5, upper layer software (applications) is informed by upper-layer configured module 1.
In above-described embodiment, former image in different resolution time sequence parameter is sent to original by upper-layer configured module 1 by upper layer software (applications)
Image resolution ratio stretching configuration information is sent to image stretch timing generation module 3, by Link by image timing generation module 2
Parameter (LINK number: single, double, four Link is arranged in image；The data method of salary distribution of Link: odd even distribution, sequence arrangement distribution etc.)
It is sent to LINK image conversion module 12, by LVDS transmission and coding parameter (transmission standard: VESA, JEIDA；Coding parameter: defeated
LVDS signal preemphasis, driving intensity etc. out) it is sent to LVDS picture signal conversion module 13.
In above-described embodiment, when original image timing generation module 2 receives the former image in different resolution of the transmission of upper-layer configured module 1
Original image timing (Vsync, Hsync, DE) is generated after order parameter, the original image timing is sent into image stretch timing later and is generated
Module 3, image stretch timing generation module 3 according to image resolution ratio stretch configuration information (stretching mode be arranged: horizontal stretch,
Stretched vertically or horizontal vertical stretch；Stretch mode setting: pixel duplication or image duplication；Draw ratio setting: level is drawn
Stretch multiple or stretched vertically multiple) and original image timing generation stretching image sampling time sequence (horizontal stretch image sampling timing,
Stretched vertically image sampling timing or horizontal vertical stretch image sampling time sequence) and stretching image timing (horizontal stretch image
Timing, stretched vertically image timing or horizontal vertical stretch image timing).
In above-described embodiment, horizontal stretch operation is first carried out, then carry out stretched vertically operation, when upper layer software (applications) only carries out water
When horizontal drawing stretches setting, when image stretch timing generation module 3 only generates horizontal stretch image timing and horizontal stretch image sampling
Sequence；When upper layer software (applications) only carries out stretched vertically setting, image stretch timing generation module 3 only generates stretched vertically image timing
With stretched vertically image sampling timing；When upper layer software (applications) setting level, vertical stretching, image stretch timing generation module 3
It then generates horizontal vertical and stretches image sampling time sequence, horizontal stretch image timing and horizontal vertical stretching image timing, i.e., it is advanced
The operation of row horizontal stretch, then stretched vertically operation is carried out, and stretched vertically image timing is in horizontal stretch image timing
On the basis of carry out stretched vertically processing.
In above-described embodiment, for the operating process for illustrating image stretch, taking resolution ratio is the stretched operation of 2 × 2 image
Process is illustrated, and the pixel of the image is as shown in table 1, the original image timing of the image and corresponding with the original image timing
Original digital image data is as shown in Figure 2.
Table 1
| D00 | D01 |
| D10 | D11 |
Horizontal stretch operation-pixel replication mode:
In above-described embodiment, when upper layer software (applications) only carries out horizontal stretch setting, and upper layer software (applications) passes through upper-layer configured mould
It is that horizontal stretch configuration-direct is (horizontal that the image resolution ratio that block 1 is sent to image stretch timing generation module 3, which stretches configuration information,
Stretching mode and pixel replication mode), 2 times of horizontal stretch, as shown in figure 3, then image stretch timing generation module 3 is according to the figure
The data effective district of row image timing every in the original image timing and blanking zone are made 2 times as resolution ratio stretches configuration information
Stretching obtains 2 times of horizontal stretch image timing；Meanwhile the blanking zone of row image timing every in the original image timing being drawn
It stretches, so that the duration of the blanking zone after the data effective district of every row image timing and stretching and 2 times of horizontal stretch images
The duration of every row image timing is identical in timing, obtains 2 times of horizontal stretch image sampling timing；Later, when image stretch
2 times of horizontal stretch image sampling timing are sent into original digital image data generation module 6 by sequence generation module 3, by 2 times of horizontal stretch
Image timing is sent into first and stretches image data generation submodule 8.Original digital image data generation module 6 receives 2 times of horizontal stretch
After image sampling timing, by original image in the data effective district of every row image timing in 2 times of horizontal stretch image sampling timing
As data are read from high speed DDR storage chip 5 by original digital image data Read-write Catrol module 4, and by the original digital image data according to
Caching is image buffer storage data in the secondary each address for being written to the first image data cache sub-module 7, when the original digital image data
Every row image data each address of the first image data cache sub-module 7 is all written after, first stretch image data
Submodule 8 is generated under the control of 2 times of horizontal stretch image timing and is repeated according to the buffer address of original digital image data sequence
Image buffer storage data 2 times read in each buffer address directly export 2 times of horizontal stretch image datas, 2 times of horizontal stretch
Image data is as shown in table 2.
Table 2
| D00 | D00 | D01 | D01 |
| D10 | D10 | D11 | D11 |
Horizontal stretch operation-image replication mode:
In above-described embodiment, when upper layer software (applications) only carries out horizontal stretch setting, and upper layer software (applications) passes through upper-layer configured mould
It is that horizontal stretch configuration-direct is (horizontal that the image resolution ratio that block 1 is sent to image stretch timing generation module 3, which stretches configuration information,
Stretching mode and image replication mode), 2 times of horizontal stretch, as shown in figure 4, then image stretch timing generation module 3 is according to the figure
The data effective district of row image timing every in the original image timing and blanking zone are made 2 times as resolution ratio stretches configuration information
Stretching obtains 2 times of horizontal stretch image timing；Meanwhile the blanking zone of row image timing every in the original image timing being drawn
It stretches, so that the duration of the blanking zone after the data effective district of every row image timing and stretching and 2 times of horizontal stretch images
The duration of every row image timing is identical in timing, obtains 2 times of horizontal stretch image sampling timing；Later, when image stretch
2 times of horizontal stretch image sampling timing are sent into original digital image data generation module 6 by sequence generation module 3, by 2 times of horizontal stretch
Image timing is sent into first and stretches image data generation submodule 8.Original digital image data generation module 6 receives 2 times of horizontal stretch
After image sampling timing, by original image in the data effective district of every row image timing in 2 times of horizontal stretch image sampling timing
As data are read from high speed DDR storage chip 5 by original digital image data Read-write Catrol module 4, and by the original digital image data according to
Caching is image buffer storage data in the secondary each address for being written to the first image data cache sub-module 7, when the original digital image data
Every row image data each address of the first image data cache sub-module 7 is all written after, first stretch image data
Submodule 8 is generated under the control of 2 times of horizontal stretch image timing and according to the slow of row image data every in original digital image data
It deposits image buffer storage data 2 times that sequence of addresses circulation is read in each buffer address of the row image data and directly exports 2 times of water
Horizontal drawing stretches image data, and 2 times of horizontal stretch image datas are as shown in table 3.
Table 3
| D00 | D01 | D00 | D01 |
| D10 | D11 | D10 | D11 |
In above-described embodiment, which is sent into tensile diagram by the first image data cache sub-module 7
In picture output module 11, while 2 times of horizontal stretch image timing are also sent into and stretch images by image stretch timing generation module 3
In output module 11, image output module 11 is stretched by 2 times of horizontal stretch image datas and 2 times of horizontal stretch image timing
It synchronizes the stretching image clock signal of processing output synchronous transfer and stretches viewdata signal.
Stretched vertically operation-image replication mode:
In above-described embodiment, when upper layer software (applications) only carries out stretched vertically setting, and upper layer software (applications) passes through upper-layer configured mould
It is that stretched vertically configuration-direct is (vertical that the image resolution ratio that block 1 is sent to image stretch timing generation module 3, which stretches configuration information,
Stretching mode and image replication mode), 2 times of stretched vertically, as shown in figure 5, then image stretch timing generation module 3 is according to the figure
1 original image timing, which is inserted into, after stretching configuration information in the original image timing as resolution ratio obtains 2 times of stretched vertically figures
As timing, while using 2 times of stretched vertically image timing as 2 times of stretched vertically image sampling timing；Later, when image stretch
2 times of stretched vertically image sampling timing are sent into original digital image data generation module 6 by sequence generation module 3, by 2 times of stretched verticallies
Image timing is sent into second and stretches image data generation submodule 10.Original digital image data generation module 6 receives 2 times of stretched verticallies
After image sampling timing, by original image in the data effective district of every row image timing in 2 times of stretched vertically image sampling timing
As data are read from high speed DDR storage chip 5 by original digital image data Read-write Catrol module 4, and by the original digital image data according to
Caching is image buffer storage data in the secondary each address for being written to the second image data cache sub-module 9, when the original digital image data
Every row image data each address of the second image data cache sub-module 9 is all written after, second stretch image data
Submodule 10 is generated under the control of 2 times of stretched vertically image timing and is successively read according to the caching of original digital image data sequence
The image buffer storage data of each address directly export 2 times of stretched vertically image datas in the second image data cache sub-module 9,
2 times of stretched vertically image datas are as shown in table 4.
Table 4
| D00 | D01 |
| D10 | D11 |
| D00 | D01 |
| D10 | D11 |
Stretched vertically operation-pixel replication mode:
In above-described embodiment, when upper layer software (applications) only carries out stretched vertically setting, and upper layer software (applications) passes through upper-layer configured mould
It is that stretched vertically configuration-direct is (vertical that the image resolution ratio that block 1 is sent to image stretch timing generation module 3, which stretches configuration information,
Stretching mode and pixel replication mode), 2 times of stretched vertically, as shown in fig. 6, then image stretch timing generation module 3 is according to the figure
2 are obtained as resolution ratio stretching configuration information is inserted into 1 row image timing after each row image timing of the original image timing
Times stretched vertically image timing, meanwhile, image stretch timing generation module 3 stretches configuration information according to the image resolution ratio should
The blanking zone of every row image timing stretches in original image timing, so that after the data effective district of every row image timing and stretching
Blanking zone duration it is identical as the duration of every row image timing in 2 times of stretched vertically image timing, obtain 2 times
Stretched vertically image sampling timing；Later, image stretch timing generation module 3 send 2 times of stretched vertically image sampling timing
Enter original digital image data generation module 6, which is sent into second and stretches image data generation submodule
10.After original digital image data generation module 6 receives 2 times of stretched vertically image sampling timing, in 2 times of stretched vertically image samplings
Original digital image data is passed through into original digital image data Read-write Catrol module 4 from high speed in the data effective district of every row image timing in timing
Read in DDR storage chip 5, and by the original digital image data be sequentially written in the second image data cache sub-module 9 eachly
Caching is image buffer storage data in location, when second image data caching is all written in every row image data of the original digital image data
Behind each address of submodule 9, second, which stretches image data, generates submodule 10 in the control of 2 times of stretched vertically image timing
In each buffer address that is lower and sequentially recycling the reading row image data according to the caching of row image data every in original digital image data
Image buffer storage data n times directly export 2 times of stretched vertically image datas, 2 times of stretched vertically image datas are as shown in table 5.
Table 5
| D00 | D01 |
| D00 | D01 |
| D10 | D11 |
| D10 | D11 |
In above-described embodiment, second, which stretches image data, generates submodule 10 for 2 times of stretched vertically image datas feedings
It stretches in image output module 11, while 2 times of stretched vertically image timing are also sent into and are drawn by image stretch timing generation module 3
It stretches in image output module 11, stretches image output module 11 for 2 times of stretched vertically image datas and 2 times of stretched vertically figures
As timing synchronizes the stretching image clock signal of processing output synchronous transfer and stretches viewdata signal.
Horizontal vertical stretched operation-pixel replication mode:
In above-described embodiment, when upper layer software (applications), which carries out horizontal, stretched vertically, to be arranged, and upper layer software (applications) passes through upper-layer configured
It is that horizontal vertical stretching configuration refers to that the image resolution ratio that module 1 is sent to image stretch timing generation module 3, which stretches configuration information,
(horizontal vertical stretching mode and pixel replication mode), horizontal vertical is enabled to stretch 2 times, as shown in fig. 7, then image stretch timing is raw
Configuration information is stretched according to the image resolution ratio under pixel replication mode at module 3,2 times of levels first are carried out to original image timing
Stretched operation, then 2 times of stretched vertically operations are carried out, it obtains 2 times of horizontal verticals and stretches image sampling time sequence, 2 times of horizontal stretch figures
As timing and 2 times of horizontal verticals stretch image timing.Later, image stretch timing generation module 3 stretches 2 times of horizontal verticals
Image sampling timing is sent into original digital image data generation module 6, which is sent into first and stretches picture number
According to generating in submodule 8, which is stretched into image timing and is sent into the second stretching image data generation submodule 10.
Original digital image data generation module 6 receives 2 times of horizontal verticals and stretches image sampling time sequence, stretches image in 2 times of horizontal verticals
In sampling time sequence every row image timing data effective district in by original digital image data by original digital image data Read-write Catrol module 4 from
It is read in high speed DDR storage chip 5, and the original digital image data is sequentially written in each of the first image data cache sub-module 7
Caching is image buffer storage data in a address, when first image data is all written in every row image data of the original digital image data
Behind each address of cache sub-module 7, first, which stretches image data, generates submodule 8 in 2 times of horizontal stretch image timing
The image buffer storage data read in each buffer address of the first image data cache sub-module 7 under control are written to the second picture number
According in cache sub-module 9, then second image data generation submodule 10 is stretched in 2 times of horizontal verticals stretching image timing
The image buffer storage data read in each buffer address of the second image data cache sub-module 9 under control export 2 times of horizontal verticals
Image data is stretched, as shown in table 6.
Table 6
| D00 | D00 | D01 | D01 |
| D00 | D00 | D01 | D01 |
| D10 | D10 | D11 | D11 |
| D10 | D10 | D11 | D11 |
Horizontal vertical stretched operation-image replication mode:
In above-described embodiment, when upper layer software (applications), which carries out horizontal, stretched vertically, to be arranged, and upper layer software (applications) passes through upper-layer configured
It is that horizontal vertical stretching configuration refers to that the image resolution ratio that module 1 is sent to image stretch timing generation module 3, which stretches configuration information,
(horizontal vertical stretching mode and image replication mode), horizontal vertical is enabled to stretch 2 times, as shown in figure 8, then image stretch timing is raw
Configuration information is stretched according to the image resolution ratio under image replication mode at module 3,2 times of levels first are carried out to original image timing
Stretched operation, then 2 times of stretched vertically operations are carried out, it obtains 2 times of horizontal verticals and stretches image sampling time sequence, 2 times of horizontal stretch figures
As timing and 2 times of horizontal verticals stretch image timing.Later, image stretch timing generation module 3 stretches 2 times of horizontal verticals
Image sampling timing is sent into original digital image data generation module 6, which is sent into first and stretches picture number
According to generating in submodule 8, which is stretched into image timing and is sent into the second stretching image data generation submodule 10.
Original digital image data generation module 6 receives 2 times of horizontal verticals and stretches image sampling time sequence, stretches image in 2 times of horizontal verticals
In sampling time sequence every row image timing data effective district in by original digital image data by original digital image data Read-write Catrol module 4 from
It is read in high speed DDR storage chip 5, and the original digital image data is sequentially written in each of the first image data cache sub-module 7
Caching is image buffer storage data in a address, when first image data is all written in every row image data of the original digital image data
Behind each address of cache sub-module 7, first, which stretches image data, generates submodule 8 in 2 times of horizontal stretch image timing
The image buffer storage data read in each buffer address of the first image data cache sub-module 7 under control are written to the second picture number
According in cache sub-module 9, then second image data generation submodule 10 is stretched in 2 times of horizontal verticals stretching image timing
The image buffer storage data read in each buffer address of the second image data cache sub-module 9 under control export 2 times of horizontal verticals
Image data is stretched, as shown in table 7.
Table 7
| D00 | D00 | D01 | D01 |
| D10 | D10 | D11 | D11 |
| D00 | D00 | D01 | D01 |
| D10 | D10 | D11 | D11 |
In above-described embodiment, second, which stretches image data, generates submodule 10 for 2 times of horizontal verticals stretching image datas
It is sent into and stretches in image output module 11, while when 2 times of horizontal verticals are also stretched image by image stretch timing generation module 3
Sequence, which is sent into, to be stretched in image output module 11, is stretched image output module 11 for 2 times of horizontal verticals and is stretched image data and 2 times
Horizontal vertical stretches image timing and synchronizes the stretching image clock signal of processing output synchronous transfer and stretch image data
Signal.
In above-described embodiment, LINK image conversion module 12 receives the stretching image clock signal of the output synchronous transfer
After stretching viewdata signal, parameter is arranged for the stretching image data according to the Link image that upper-layer configured module 1 is sent
It is assigned on multiple LINK and obtains more LINK image datas, while the stretching image timing being divided into the timing of multiple LINK.
In above-described embodiment, LVDS transmission that LVDS picture signal conversion module 13 is sent according to upper-layer configured module 1 and
It encodes configuration order and the image data of each link is subjected to LVDS transmission encoding operation and parallel-serial conversion operation, be converted into serial
LVDS picture signal.
As it will be easily appreciated by one skilled in the art that the content that this specification is not described in detail belongs to this field professional technique
The prior art well known to personnel is not intended to limit the invention the above is merely preferred embodiments of the present invention, all in this hair
Made any modifications, equivalent replacements, and improvements etc., should be included in protection scope of the present invention within bright spirit and principle
Within.
Claims (10)
1. a kind of method for being stretched to image, which comprises the following steps:
S1 configuration information) is stretched according to image resolution ratio and original image timing generates when stretching image sampling time sequence and stretching image
Sequence；
S2) reading original digital image data according to the stretching image sampling time sequence and cache is image buffer storage data；
S3 image buffer storage data output) is read according to the stretching image timing and stretches image data；
It includes: horizontal stretch configuration-direct, horizontal stretch multiple and/or stretched vertically that the image resolution ratio, which stretches configuration information,
Configuration-direct and stretched vertically multiple.
2. the method according to claim 1 for being stretched to image, which is characterized in that further include step S4: right
The stretching image timing and the stretching image data synchronize stretching image clock signal and the drawing of processing output synchronous transfer
Stretch viewdata signal.
3. the method according to claim 1 for being stretched to image, which is characterized in that image point in step S1
It includes horizontal stretch configuration-direct and horizontal stretch multiple N that resolution, which stretches configuration information, and wherein N is positive integer；Step S1 is specific
The following steps are included:
According to the horizontal stretch configuration-direct and the horizontal stretch multiple N by the data of row image timing every in the original image timing
The stretching that effective district and blanking zone make N times obtains N times of horizontal stretch image timing；Meanwhile by every row in the original image timing
The blanking zone of image timing stretches so that the data effective district of every row image timing and stretch after blanking zone it is lasting when
Between it is identical as the duration of every row image timing in the N times of horizontal stretch image timing, obtain N times of horizontal stretch image sampling
Timing.
4. the method according to claim 3 for being stretched to image, which is characterized in that read the figure in step S3
As data cached specifically includes the following steps:
It repeats to read in each buffer address according to the N times of horizontal stretch image timing and according to the caching of original digital image data sequence
Image buffer storage data n times；
Alternatively,
It is read according to the N times of horizontal stretch image timing and according to the caching of row image data every in original digital image data sequence circulation
Image buffer storage data n times in each buffer address of the row image data.
5. the method according to claim 1 for being stretched to image, which is characterized in that image point in step S1
It includes stretched vertically configuration-direct and stretched vertically multiple M that resolution, which stretches configuration information, and wherein M is positive integer；Step S1 is specific
The following steps are included:
S1a M-1 item) is inserted into after the original image timing according to the stretched vertically configuration-direct and the stretched vertically multiple M should
Original image timing is used as M times of stretched vertically image timing and M times of stretched vertically image sampling timing simultaneously；
Alternatively,
S1b) according to the stretched vertically configuration-direct and stretched vertically multiple M respectively in each row image of the original image timing
It is inserted into the M-1 row row image timing after sequence and obtains M times of stretched vertically image timing；Meanwhile by every row in the original image timing
The blanking zone of image timing stretches so that the data effective district of every row image timing and stretch after blanking zone it is lasting when
Between it is identical as the duration of every row image timing in the M times of stretched vertically image timing, obtain M times of stretched vertically image sampling
Timing.
6. the method according to claim 5 for being stretched to image, which is characterized in that read the figure in step S3
As data cached specifically includes the following steps:
The M times of stretched vertically image timing according to step S1a is simultaneously successively read according to the caching of original digital image data sequence
Image buffer storage data in each buffer address；
Alternatively,
The M times of stretched vertically image timing according to step S1b and delaying according to row image data every in original digital image data
Deposit image buffer storage data M times in each buffer address of the sequence circulation reading row image data.
7. a kind of device for being stretched to image, which is characterized in that including being set in a programmable logic device
Image stretch timing generation module, original digital image data generation module, image data cache module and stretch image data generate
Module；Wherein,
The image stretch timing generation module is used to stretch configuration information according to image resolution ratio and original image timing is generated and stretched
Image sampling timing and stretching image timing；
The original digital image data generation module is used to read original digital image data according to the stretching image sampling time sequence and by the original image
It is image buffer storage data that caching in the image data cache module, which is written, in data；
The stretching image data generating module is used to read image buffer storage data output tensile diagram according to the stretching image timing
As data.
8. the device according to claim 7 for being stretched to image, which is characterized in that the image data caches mould
Block includes the first image data cache sub-module and the second image data cache sub-module, the stretching image data generating module packet
It includes the first stretching image data and generates submodule and the second stretching image data generation submodule；Wherein,
When the first image data cache sub-module is used for the original digital image data generation module according to horizontal stretch image sampling
The original digital image data caching that sequence is read is horizontal stretch image buffer storage data；
The first stretching image data, which generates submodule and is used to read the horizontal stretch image according to horizontal stretch image timing, to be delayed
Deposit data output level stretches image data；
When the second image data cache sub-module is used for the original digital image data generation module according to stretched vertically image sampling
The original digital image data caching that sequence is read is stretched vertically image buffer storage data；
The second stretching image data, which generates submodule and is used to read the stretched vertically image according to stretched vertically image timing, to be delayed
Deposit data exports stretched vertically image data.
9. the device according to claim 8 for being stretched to image, which is characterized in that second image data is slow
Submodule is deposited to be also used to the first horizontal stretch image data caching for stretching image data generation submodule output be level
Stretched vertically image buffer storage data；The second stretching image data generates submodule and is also used to read horizontal vertical stretching image
Data cached output level stretched vertically image data.
10. the device for being stretched to image according to claim 8 or claim 9, which is characterized in that first picture number
It is two-port RAM according to cache sub-module and the second image data cache sub-module.
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