CN102957884A - Superposing processing device of vehicle-mounted camera images and method thereof - Google Patents
Superposing processing device of vehicle-mounted camera images and method thereof Download PDFInfo
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- CN102957884A CN102957884A CN2012102959714A CN201210295971A CN102957884A CN 102957884 A CN102957884 A CN 102957884A CN 2012102959714 A CN2012102959714 A CN 2012102959714A CN 201210295971 A CN201210295971 A CN 201210295971A CN 102957884 A CN102957884 A CN 102957884A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/027—Parking aids, e.g. instruction means
- B62D15/0275—Parking aids, e.g. instruction means by overlaying a vehicle path based on present steering angle over an image without processing that image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/60—Memory management
Abstract
Two OSD areas are distributed on an internal memory of the present invention. Image data formed by a steering angle linkage conducting wire can be directly read into the other OSD area without waiting a used OSD area to be initialized. Thus, delay time generated during the superposing and processing time of the video image and image data can be shortened, image noises caused by Vsync synchronization can be avoided finally, and high quality images can be realized with low CPU performance.
Description
Technical field
The present invention relates to a kind of overlap-add procedure devices and methods therefor of vehicle-mounted camera image, particularly, the overlap-add procedure devices and methods therefor of image that various in-vehicle electronic system uses.
Background technology
Usually, the technology of synthetic special pattern is referred to as stack (Overlay) on camera image or the video image.This superimposing technique is widely used in technical field of image processing, especially at present in the upper superimposing technique that extensively adopts image and figure of vehicle-mounted parking assistance system (Parking Guide System).
Fig. 1 is the memory partitioning figure of the vehicle-mounted parking assistance system of the traditional superimposing technique of employing.
As shown in Figure 1, adopting the memory partitioning of the vehicle-mounted parking assistance system of traditional superimposing technique is buffer area, image window area and OSD (On Screen Display) window area.The buffer area is the zone of temporarily storing the figures such as the literal that superposes on camera image or the video image or parking pilot wire.The image window area is the zone that is output as purpose storage camera image or video image.The OSD window area is that output pattern is the zone that purpose stores.
In the above-mentioned region of memory structure, the process of superimposed image and figure is as follows.
At first, required figure is saved in the buffer area (1.) of internal memory with suitable resolution.In order to export the figure that is saved in the memory buffer zone, will be stored in the graph copying in memory buffer zone to OSD window area (2.).Then, superimposed image window area and OSD window area (3.).Upgrade above-mentioned image (4.).At this moment, initialization (5.) is carried out in the buffer area of internal memory.Repeat afterwards above-mentioned process (6.).
But the graph copying that will write the buffer area in the aforesaid traditional additive process can be delayed time in the process of OSD window area.And, for new figure is write the buffer area, all the time initialization is carried out in the buffer area, so in initialized process, figure can't be write the buffer area.Therefore, the stand-by period (waiting time) can occur.This can reduce picture quality eventually.Certainly, when using the fast high-performance CPU of processing speed the problem that picture quality reduces can not occur, but when using the lower low performance CPU of processing speed, still can't guarantee the quality of image.In other words owing to be stored in the view data of internal memory and writing and reading and delay time of graph data, naked eyes can see that figure is incured loss through delay or since with the stationary problem generation picture noise of Vsync.
Summary of the invention
The present invention is intended to, solve in the additive process of one of automobile image processing procedure, time-delay with occuring in view data and graph data write memory and the process that reads improves picture quality, and the superposition processing method by image that vehicle-mounted camera obtains is provided.
The present invention is intended to provide in addition, adopts the overlap-add procedure device of the image that vehicle-mounted camera obtains of said method.
The superposition processing method of image that vehicle-mounted camera of the present invention obtains comprises, for the video image that will take motor vehicle environment outputs to display unit, the image window area of store video images, and in order to output to display unit by the graph data that the parking pilot wire consists of, the logic region in internal memory inside distributes the phase I that can supply the first and second OSD window areas of store graphics data; Some zones in above-mentioned the first and second OSD window areas write the second stage of graph data; Activation writes the zone of graph data, does not activate the phase III in the zone that does not write graph data; And will store the graph data of active region and the quadravalence section that video image superposes into.
The overlap-add procedure device of the image that vehicle-mounted camera obtains that the present invention is correlated with comprises, for the video image that will take motor vehicle environment outputs to display unit, preserves the video window zone of video image; In order to output to display unit by the graph data that the parking pilot wire consists of, the internal memory of the distribution first and second OSD window areas of store graphics data; The control part that writes and read of control internal memory; According to the control of control part, the graph data in the some zones that are activated and the display part of video and graph compound output will be write.Graph data is write some zones in the first and second OSD window areas, activate the zone that writes graph data, do not activate the zone that does not write graph data, initialization is carried out in inactive zone.
According to the inventive method, in internal memory, distribute two OSD zones, be not initialised so do not need to wait for OSD zone in use, directly can write next OSD zone, effectively shorten time-delay.Therefore, compare with traditional technology and can shorten twice time-delay, do not produce the picture noise that the Vsync synchronization causes, in lower cpu performance, also can realize high-quality image.
Description of drawings
Fig. 1 is for adopting the memory partitioning figure of traditional superimposing technique;
Fig. 2 is the summary block diagram of embodiment of the present invention Coherent addition processing unit;
Fig. 3 is the administrative division map that distributes on the internal memory shown in Figure 2;
Fig. 4 is the superposition processing method precedence diagram of the relevant vehicle-mounted camera image of one embodiment of the present invention.
Embodiment
Among the present invention, in the overlap-add procedure process of vehicle-mounted camera image, in two OSD window areas of internal memory internal distribution, the graphics overlay that is stored in two overlap-add region to the place ahead image or rear image, also can be improved image stack (Overlay) performance and systematic function in lower cpu performance.
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the summary block diagram of one embodiment of the present invention Coherent addition processing unit.Although Fig. 1 illustration the overlap-add procedure device that adopts in the parking support system, overlap-add procedure device of the present invention has more than the parking assistance system that is defined in.Just in order to help to understand the present invention, be applied to an example of parking assistance system.Therefore, be appreciated that fully by following explanation and utilize the various in-vehicle electronic systems of image that vehicle-mounted camera obtains all can be suitable for.
As shown in Figure 1, the overlap-add procedure device 100 of one embodiment of the present invention comprises, image pickup section 110, internal memory section 120, graphics data saving section 130, display part 140 and control part 150.
Graphics data saving section 130 is the mediums of storing the graph datas such as steering angle interlock wire.According to the reading command of control part 150, the graph data that is kept at graphics data saving section directly is written into the OSD window area of internal memory section 120.Internal memory of the present invention section 120 does not have the distributing buffer zone, produces the conventional art of time-delay so be different from the graph copying that will be stored in the buffer area to the OSD zone, directly writes graph data to the OSD zone and shortens and delay time.
Fig. 3 is the block plan of internal memory shown in Figure 2 section.
As shown in Figure 3, the interior zone of internal memory section 120 is divided into, and output video image is an image window area of purpose store video images and two OSD window areas that are equivalent to image resolution ratio and the 2nd OSD window area.
The below introduces data handling procedure in each zone of distributing.
At first, the graph data of formation steering angle interlock wire is written into an OSD window area (OSD1) (1.).
Next, control according to Fig. 2 control part 150, activate an OSD window area (OSD1), do not activate the 2nd OSD window area (OSD2), with the graph data that writes in the OSD window area (OSD1) of activating and the video image that is stored in the image window area superpose (2.), simultaneously initialization is carried out in the 2nd OSD window area (OSD2) of not activating, finish the renewal (3.) of video image.
Next, write the graph data (5.) that consists of steering angle interlock wire in above-mentioned initialized the 2nd OSD window area (OSD2).
Control according to Fig. 2 control part 150, activate the 2nd OSD window area (OSD2), do not activate an OSD window area (OSD1), the graph data of storing in the 2nd OSD window area (OSD2) that is stored in the video image of image window area and is activated is synthesized (6.).Like this, finish the renewal (7.) of video image.At this moment, an OSD window area (OSD1) be initialised (8.).
Fig. 4 is the superposition processing method precedence diagram of the relevant vehicle-mounted camera image of the specific embodiment of the invention.Understand for convenient, describe in detail with reference to accompanying drawing 2.
As shown in Figure 4, at first for the output pattern data, two OSD window areas and the 2nd OSD window area in the internal memory internal distribution output pattern data of Fig. 2, also distribute output to comprise that the video image of vehicle front and rear image is purpose, an image window area (S412) of store video images.And in order to select respectively two OSD window areas and the 2nd OSD window area, each zone also arranges label (Flag) value (TOGL).
Next, according to set ident value (TOGL), select the some zones (S414) in the first and second OSD window areas (OSD1, OSD2).
When selecting an OSD window area, the graph data that the needs that comprise vehicle front and rear image overlap onto video image writes an OSD window area (OSD1) (S416).
Then, (S418) activated by the control part of Fig. 2 (150) in an OSD window area (OSD1) that writes graph data.At this moment, the 2nd OSD window area (OSD2) is not activated.Next, the 2nd OSD window area (OSD2) of not activating is initialised (S420), empties (CLEAR) corresponding ident value (TOGL).
In addition, in the above-mentioned stage (S414), if what select is the 2nd OSD window area (OSD2), then can be written into the 2nd OSD window area (OSD2) (S424) with the overlapping graph data of video image.
Next, (S418) can be activated by the control part 150 of Fig. 2 in the 2nd OSD window area (OSD2) that writes graph data.At this moment, an OSD window area (OSD1) can not be activated.The 2nd OSD window area (OSD2) of not activating is initialised (S420), and ident value (TOGL) is set.
As mentioned above, in the conventional art initialization is carried out in the buffer area and just can again write (Write) later on, so can delay time.But the present invention uses two OSD zones, need not to wait for that the OSD zone of having used is initialised, and directly can write to next OSD zone, shortens time-delay.Therefore, compare with conventional art and can shorten twice time-delay, do not produce the picture noise that the Vsync synchronization causes, in lower cpu performance, also can embody high quality graphic.
Claims (5)
1. one kind is obtained the superposition processing method of image by vehicle-mounted camera, it is characterized in that, comprising:
For the video image that will take motor vehicle environment outputs to display unit, store above-mentioned video image the image window area and, for the graph data that the parking pilot wire is consisted of outputs to above-mentioned display unit, the first and second OSD video areas of the above-mentioned graph data of storage are assigned to the phase I of the logic region of internal memory inside;
Some zones in above-mentioned the first and second OSD window areas write the second stage of above-mentioned graph data;
Activate the above-mentioned zone that writes graph data, do not activate the phase III in the zone that does not write graph data;
The quadravalence section that the graph data that writes in the above-mentioned active region and video image are superposeed.
2. according to claim 1ly obtain the superposition processing method of image by vehicle-mounted camera, it is characterized in that, also comprise,
After phase III, in above-mentioned the first and second OSD window areas the initialized stage is carried out in nonactivated zone.
3. according to claim 1ly obtain the superposition processing method of image by vehicle-mounted camera, it is characterized in that,
The logic region of above-mentioned internal memory inside can not distribute the buffer area that temporarily writes graph data in phase I.
4. according to claim 1ly obtain the superposition processing method of image by vehicle-mounted camera, it is characterized in that,
Second stage also comprises,
For the some zones in above-mentioned the first and second OSD window areas write graph data, select the stage in the some zones in the first and second OSD window areas;
In order to select some zones, the first and second OSD window areas are provided with the index value of difference the first and second OSD window areas.
5. one kind is obtained the overlap-add procedure device of video by vehicle-mounted camera, it is characterized in that, comprise,
For the video image that will take motor vehicle environment outputs to display unit, store above-mentioned video image video window zone and, in order to output to display unit by the graph data that the parking pilot wire consists of, the internal memory of the first and second OSD window areas of memory allocated graph data;
The control part that writes and read of control internal memory;
Be written into graph data in some zones of activation and the display part of above-mentioned video and graph compound output according to the control of control part;
Above-mentioned control part,
Some zones in above-mentioned the first and second OSD window areas write graph data, activate the zone that writes graph data, do not activate the zone that does not write graph data, and initialization is carried out in nonactivated zone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0084595 | 2011-08-24 | ||
| KR1020110084595A KR20130021988A (en) | 2011-08-24 | 2011-08-24 | Device for overlaying image obtained by camera for vehicle and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102957884A true CN102957884A (en) | 2013-03-06 |
| CN102957884B CN102957884B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210295971.4A Active CN102957884B (en) | 2011-08-24 | 2012-08-20 | Superposing processing device of vehicle-mounted camera images and method thereof |
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| KR (1) | KR20130021988A (en) |
| CN (1) | CN102957884B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486567A (en) * | 2014-12-30 | 2015-04-01 | 中南大学 | MiniOSD video overlapping displaying method and circuit for small unmanned aerial vehicle navigation |
| US10134206B2 (en) | 2017-04-25 | 2018-11-20 | Ford Global Technologies, Llc | Method and apparatus for video composition, synchronization, and control |
| CN115589527A (en) * | 2022-11-23 | 2023-01-10 | 禾多科技（北京）有限公司 | Automatic driving image sending method, automatic driving image sending device, electronic equipment and computer medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287532A (en) * | 1998-10-08 | 2001-03-14 | 松下电器产业株式会社 | Driving assisting device and recording medium |
| US6763178B1 (en) * | 1998-09-28 | 2004-07-13 | Sony Corporation | Method and apparatus for digital recording/reproduction of video with superimposed sub-information |
| CN1585373A (en) * | 2004-05-28 | 2005-02-23 | 中兴通讯股份有限公司 | Ping pong buffer device |
| CN101324845A (en) * | 2008-07-25 | 2008-12-17 | 北京中星微电子有限公司 | Embedded system and display method of user graphical interfaces |
| CN101640768A (en) * | 2008-07-30 | 2010-02-03 | 天津天地伟业数码科技有限公司 | Multi-cannel OSD video superposition controller |
-
2011
- 2011-08-24 KR KR1020110084595A patent/KR20130021988A/en not_active Application Discontinuation
-
2012
- 2012-08-20 CN CN201210295971.4A patent/CN102957884B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6763178B1 (en) * | 1998-09-28 | 2004-07-13 | Sony Corporation | Method and apparatus for digital recording/reproduction of video with superimposed sub-information |
| CN1287532A (en) * | 1998-10-08 | 2001-03-14 | 松下电器产业株式会社 | Driving assisting device and recording medium |
| CN1585373A (en) * | 2004-05-28 | 2005-02-23 | 中兴通讯股份有限公司 | Ping pong buffer device |
| CN101324845A (en) * | 2008-07-25 | 2008-12-17 | 北京中星微电子有限公司 | Embedded system and display method of user graphical interfaces |
| CN101640768A (en) * | 2008-07-30 | 2010-02-03 | 天津天地伟业数码科技有限公司 | Multi-cannel OSD video superposition controller |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104486567A (en) * | 2014-12-30 | 2015-04-01 | 中南大学 | MiniOSD video overlapping displaying method and circuit for small unmanned aerial vehicle navigation |
| CN104486567B (en) * | 2014-12-30 | 2018-08-24 | 中南大学 | MiniOSD video Overlapping display methods and circuit applied to small drone navigation |
| US10134206B2 (en) | 2017-04-25 | 2018-11-20 | Ford Global Technologies, Llc | Method and apparatus for video composition, synchronization, and control |
| CN115589527A (en) * | 2022-11-23 | 2023-01-10 | 禾多科技（北京）有限公司 | Automatic driving image sending method, automatic driving image sending device, electronic equipment and computer medium |
| CN115589527B (en) * | 2022-11-23 | 2023-06-27 | 禾多科技（北京）有限公司 | Automatic driving image transmission method, device, electronic equipment and computer medium |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130021988A (en) | 2013-03-06 |
| CN102957884B (en) | 2017-05-24 |
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