TW201242347A - Camera automatic targeting method - Google Patents

Camera automatic targeting method Download PDF

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Publication number
TW201242347A
TW201242347A TW100112727A TW100112727A TW201242347A TW 201242347 A TW201242347 A TW 201242347A TW 100112727 A TW100112727 A TW 100112727A TW 100112727 A TW100112727 A TW 100112727A TW 201242347 A TW201242347 A TW 201242347A
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TW
Taiwan
Prior art keywords
camera
method
template
comparison
movement
Prior art date
Application number
TW100112727A
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Chinese (zh)
Inventor
Yi-Fu Chen
Jun-Ting Hong
He-Xun Zhang
Wei-Xiu Chen
Original Assignee
Chunghwa Telecom Co Ltd
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Application filed by Chunghwa Telecom Co Ltd filed Critical Chunghwa Telecom Co Ltd
Priority to TW100112727A priority Critical patent/TW201242347A/en
Publication of TW201242347A publication Critical patent/TW201242347A/en

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Abstract

A multi-angle interaction television needs to establish a plurality of cameras for surround shooting. In another word, in response to the same shooting scene during image capturing, many cameras are utilized to synchronously take pictures to obtain videos at different angles. Before taking pictures, each camera must be firstly moved to allow the taken object appearing at the optimum position in the screen. However, artificially targeting has time and labor consuming. Multi-camera automatic targeting method utilizes artificially targeting manner to regulate each camera and store the result that is completed with targeting as templates respectively. In picture retaking, if the position of photographing the object is not identical to the targeting at first time, the plurality of cameras can be rapidly and automatically targeted through template comparison together with rapid convergence algorithm, thereby simplifying the preparation prior to photographing.

Description

201242347 VI. Description of the Invention: [Technical Field] The present invention relates to an automatic alignment method based on a single or multi-camera shooting environment, and uses a template comparison concept to design a self-designed algorithm to shorten the camera aiming time. Improve the lack of time and effort to target multiple cameras before each multi-view scene is shot. [Prior Art] There is no exact technology to achieve this effect before the case. When traditional shooting activities are performed, only a few cameras are used to capture Scenes 'Each camera is controlled by humans. The audience can only see the specific angles of the pre-women's volleyball at the same time, but this shooting mode is achieved [like] can not be applied to multi-view interactive TV system. The multi-view interactive TV system emphasizes more flexible interaction with the audience. The audience can switch qing xiao xiao xin f mosquito screen at every time point. In order to control the effect of the swaying switch, the camera must take pictures when taking pictures. The camera is set up with multiple cameras, and at the same time, the camera is operated at different angles. The camera is operated in the traditional way. Before each shooting, the camera must be manually re-aligned. 'Align the center of each camera to the shooting scene. One of the - reference point 'consumed _ threat, the money is square and accurate, judging the quasi-financial position with the position of the fresh silk - "causes the error of the alcohol result. The kind of "Women Huaguan patent 13_2 "excluding the method of treating the uniforms of the uniforms (4) and the clothing of the shirts." The money only provides the installation restrictions for setting up the camera, and the method can be used to eliminate the traditional ring field. In particular, the image of the 201242347 degree field of view can be quickly confusing, but the image obtained by this shooting mode cannot be applied to the multi-view interactive television system, because the multi-view interactive television system can present different angles at the same time point. In order to achieve the effect of switching the angle of view, the relative position of the subject in each camera's face must be consistent, so each camera must be stepped before shooting. It can be seen that there are still many shortcomings in the above-mentioned methods. It is not the design of goodness, but it needs to be improved. The inventors of this case, in view of the shortcomings derived from the above-mentioned conventional methods, are the innovations and innovations of Yingsi, and they have been painstakingly researched for many years. After that, I finally successfully developed and completed this multi-camera automatic aiming method technology. SUMMARY OF THE INVENTION The object of the present invention is to provide a method for selecting an internal camera, which is different from the traditional manual method for providing a user to quickly and accurately position a plurality of cameras with human alcohol per camera. 'And improve the accuracy of the shore. To achieve the above-mentioned invention, the camera is self-standard method, and the collection of the secret board and the sample comparison shirt are the heart of the smashing machine, and the fine hand is the standard for each shot, and the _ the good pictures are stored as Sample, every time you want to shoot, you must ensure that:: consistent with the manual w reference point screen, if the picture is different from the original, you need to go to the original position, to ensure that the relative position of the reference point in each camera is the same, in the same field The bit-domain camera is based on the template stored by each, and the reference point is placed in the picture of the cat in the picture (four), the object __, the correction (four) brain program and move. Right_财龙,秋离«She's template, «版简_ take the picture of her ancestors, different from 4 201242347 to manually resign each _ machine, with this algorithm, just put the target into the scene 6 seconds before shooting , you can automatically aim at it. This camera automatic 衅 method is mainly based on multi-view interactive TV service, multi-view interactive TV service system _ multi-view spleen image technology, presenting different angles to enjoy the face, in order to achieve the effect of view switching 'multiple cameras need to be used at the same time Shooting the same object at different angles, and obtaining the same face at different time points. When shooting with multiple cameras, in addition to the synchronization function, 'each camera needs to point to the same subject before shooting, and the subject is at each The position of the camera in the camera screen must be such that when the viewer wants to switch to the next angle of view, the position of the object in the face will not show irregular movement, so that the transition of the face can be smooth and unobtrusive. The automatic vocabulary method not only unifies the location of the search process through the program, but also can quickly collect the alcohol. It is mainly composed of three types: the model collection, the template comparison and the fast convergence method. The sample acquisition system manually sets a standard template, and aligns each camera image center to a certain reference point of the shooting scene. Captured from the camera to the cat after the registration screen to the center of the shooting object is taken - a square block surface day, each will be stored as the reference model for the camera when the automatic sighting. 2. Sample comparison of the brainstorming process __ like looking from the top left (four), from left to right, top to bottom of the reward and sample small image, and the sample obtained from the sample collection step Look at the comparison method that looks like the measurement is obvious. Look for and save the template with the highest degree of the shouting block as the target. In the process of face-to-face, you need to repeat the steps of the board and camera movement. The phase automatically moves to the reference position obtained by the original manual resignation, saving time spent on repeated remarks. The similarity measures commonly used in the comparison of the 201242347 plate are normalized correlation, mean square difference, sum absolute differences, cross-correlation coefficient (cross-). Correlation coefficient) and standard deviation of pixel ratio 'The preferred embodiment of the present invention is normalized correlation coefficient 〇3. The fast convergence method is accelerated by the concept of binary search method. For the comparison process of the template, each comparison will be compared with the previous comparison direction. If the direction of movement is the same as the direction of the previous movement, that is, the same movement angle of the previous camera moves the camera, if you want to move the direction and The second movement direction is opposite, then the social movement angle of the two-point mobile camera, repeating this comparison action 'gradually converges the angle of the camera rotation, so that the camera quickly and accurately put the subject in the correct position. The steps in the method are independently operated by a single camera, and each camera needs to pass through the sample collection, the template comparison and the fast-wei convergence method, and the camera shoots the crane to the reference position obtained by the original manual beer. It can also be used in the shooting environment of the single camera. The self-aligning method provided by the invention has the advantages of the following items: 1. Using the "fast automatic multi-camera to simplify the work of the manual (4) manual mode-by-mesh seed quasi-camera; 2, 3. with science Calculate the method of replacing the artificial material, reduce the error of the (four) shoe size; reduce the risk of arbitrarily lying on the side of the manpower - the stipulation of the stagnation of the money, and make it apply to the multi-view (four) system to 'switch the view (10) degree of smoothness and There is no sudden jump feeling. The invention is a simple calculation rule, which is not affected by hardware equipment. The final purchase is more similar to the environment of the camera. The detailed description above is a detailed description of a possible embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent implementation or modification of the present invention should be It is included in the patent scope of this case. 'The case of Jin Jin is not only innovative in terms of technical thinking, but also can improve the above-mentioned effects of the above-mentioned items more well than the conventional methods. It should fully comply with the statutory invention patent requirements of novelty and progress, and submit the application according to law. The Bay Bureau approved the invention patent application, in order to invent the invention, to the sense of virtue. [Embodiment] Please refer to FIG. 1 , which is a schematic structural diagram of the operation of the automatic aiming method of the camera of the present invention. Surround camera 1 is a video content provider for multi-view shooting environment. It is used to set multiple cameras to 360 degrees' while shooting the same object at different angles. In addition to the synchronous and automatic steering functions, each camera needs to be adjusted before shooting the movie. The shooting angle of each camera makes the object appear in the best position in the face, and the multi-view video content training and service management platform 2 can monitor and adjust the picture of each job and process the captured picture. And storage. The multi-camera automatic 03⁄4 standard method of the present invention is used for multi-view video capture before f is taken, and each camera undergoes image capture after passing through the standard procedure. The multi-view video content capture and service management platform 2 will store the mother. The screen of the camera manual mouse is used as the model of the automatic punctuality. When the camera needs to be re-aligned, it can be compared with the sample stored by the camera through the multi-view reduction _ _ _ _ _ _ _ _ _ The angle at which the camera needs to move, and notify the digital video camera 1 to re-adjust the shooting center to adjust the subject to the optimal position. Please refer to the model collection module of D County's silk-receiving machine for self-alignment method 201242347 Intent. Suppose you want to place the subject in the center of the screen. The pattern is collected as follows: 1. Manually align the center of the camera to the center of the subject. 2. Use the above (1) alignment position as the image center, and take the (4) fine surface of the lake and store it as a template. Please refer to the figure 2 (8) for the schematic comparison module of the camera automatic alignment method of the present invention. The template comparison method uses the normalized correlation coefficient method (n〇福(五)_iati(8) to find a template similar to the template in the image, from the left upper corner of the captured image from left to right, from top to bottom, with the picture block of P(f) as the template. Each template partition is compared with the storage template. It is difficult to compare the complete Zhang 昼 昼 - 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块 块The straight-moving object can be adjusted until the center of the camera is photographed, as shown in the figure;). In order to shorten the time of the comparison process, the reference point can be solved more quickly by combining the miscellaneous _ algorithm. Shown is a schematic diagram of the fast convergence algorithm of the automatic alignment method of the camera of the present invention. The fast (10) method _ binary lining method material, the copper two (8) step Cailang and the template most similar to the template, that is, the _ fast collection fine _ machine The central solution template is as follows: 1. The first time the camera moves to the center of the template with the horizontal and vertical hearts as the moving unit, as shown in Figure 3 (A); 2. The second move to the Nth The rules for the second move are as follows: I. Repeat the second (8) spicy Then look for the template of the most of the seesaw. II. According to the comparison result, if the direction of the movement is the same as the direction of the last movement, then the moving angle of the moving camera is the same as the direction of the last movement. , then 8 201242347 two points of the above moving angle - mobile camera. Please refer to Figure 3 (8), the direction of movement is the same as the direction of the last-time movement, then the same is true for the mobile unit. Enough _ three (6) Qing, if it is in the direction of the upper-lower chicken, the moving angle will be halved '(4) M/2 degrees for the shifting of the needle movement. ΙΠ·The horizontal and vertical movement range must be handled separately. After repeating the steps of repeating the multiple steps, when the error value of the center point of the subject and the camera image center is less than the preset value, the cat quasi-program is completed, as shown in Figure 3 (9). Inventive multi-camera automatic convergence method of the fast convergence algorithm - a schematic diagram of the example. The steps are as follows: L, please refer to Figure 4 (4), for the camera before the camera, after the implementation of Figure 2 (8) Searching Find the template with the highest similarity to the template, located at the lower right of the center of the camera image. At this time, the camera should be horizontally right and vertically downwards as the moving unit to the template. 2. 凊 _ _ four (8) , for the first time after the movement of the camera to take the picture, the template moves to the upper right of the camera image center, the horizontal direction of the camera to move the same as the previous one 'vertical direction opposite to the previous one, that is, horizontal to the right elbow The degree and vertical upward mobility are moved to the center of the template for the mobile unit. 3. Refer to Figure 4 (〇, for the camera after the second movement, the template is moved to the lower left of the center of the sweater. Fang, the center of the camera needs to move in the horizontal and vertical directions opposite to the previous one, that is, horizontally to the left Μ/2 degrees and the vertical downward Μ/4 degrees as the moving unit to move toward the center of the template. 9 201242347月 '阅读图四( 1)), for the camera after the second movement, the template is moved to the lower right of the camera image center, and the horizontal direction of the camera center is opposite to the previous one, vertical direction and upper The same time, i.e. to the right level M / 4 of the vertical downward movement of ⑽ to ten heart template for mobile units. 5. Please refer to Figure 4 (8) for the photographing touch screen after the fourth movement. The difference between the photographing point and the photographing position (4) is less than the value, that is, the fine procedure. BRIEF DESCRIPTION OF THE DRAWINGS The technical content and the purpose of the present invention will be further understood by referring to the detailed description of the present invention and the accompanying drawings. The related drawings are as follows: Schematic diagram of the architecture; Figure 2 is a schematic diagram of the sample board transfer board comparison method of the present invention; Figure 3 is a schematic diagram of the fast (four) algorithm of the camera self-calibration method of the present invention. ~', Figure 4 is the camera of the present invention. Quick method of quasi-methods. [Major component symbol description] 1 Surround camera equipment 2 Vision perspective view of the inner valley extraction and service management flat a

Claims (1)

  1. 201242347 VII, the scope of application for patents: 1 · ^ frequency from the _ quasi-method, female in the money surface environment, acupuncture one shot = two will be the female camera _ _ after the acquisition of the picture _ as a template, each The second time 'make sure to ensure that the camera image center is consistent with the reference point of the manual 晦 punctuality. If the 面 面 and the original T ' '柯 _ this self- _ quasi-domain speed will be the camera crane to the original ^, this kind of multi-camera automatic aiming The method comprises: a. a template acquisition method; b. a template comparison method; and c. a fast convergence method. 2. The camera automatic method according to item i of the patent application scope, the ten method of the pattern mining method uses the manual method to align each camera image center to a certain reference point of the shooting scene. The captured cats are allowed to pass through the post-image, taking a square of the square-shaped blocks as the center, and storing them as templates for reference in the future. 3. The camera self-calibration method as claimed in claim i, wherein the template comparison method utilizes a computer-based money-aligning program to sequentially capture a kneading area of the same size as the pattern from the photographing screen towel. The block's comparison with the sample obtained from the sample acquisition step is based on a comparison method based on similar metrics. Find the template with the highest similarity to the original template and try to align the camera center to the center of the template. In the process of alcohol, the template comparison and the camera movement step need to be repeated multiple times to automatically move the reference point to the reference position obtained by the manual manual calibration. 4. As described in the third paragraph of the patent application scope, the _ metric-based comparison method is based on comparing the template with each block on the image being searched. 201242347 Similarity' and find the template block with the highest similarity with the template. The commonly used similarity measure method T-regulated correlation coefficient method, mean square error, absolute difference combination, intersection and correlation coefficient method and pixel ratio standard deviation. 5. As for the _ 4 special fiber circumference 丨 所 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ And the direction of vertical movement, if the direction of movement is the same as the last time of moving the money, that is, moving the camera at the same moving angle of the previous camera, if the direction of the movement is opposite to the direction of the previous movement, then the second angle of the movement angle is A mobile camera repeats the comparison action and gradually reduces the range of the camera rotation angle until the error value of the center point of the subject and the image center is less than the preset value, and starts moving at a large angle by the fast convergence algorithm. Camera Shooting Center (4), _ Gradually (four) degree fine-tuning camera direction 'to accelerate the practice of automatic aiming method. 6. - Kind of camera _ quasi-method, fun in a single - camera shooting environment for the same - shooting scene 'save the camera to get the face after the camera is saved as a template, each time you want to shoot, you must ensure that the camera image center and manual Cong's punctual reference point remains the same. If the picture is inconsistent with the original, you can use this automatic cat method to quickly move the camera to its original position. i This type of camera automatic aiming method includes: a. sample acquisition method; b. template comparison method ; and c. Fast convergence method. 7. If the chair is turned over, the sixth item is called "Automatic", and the method of collecting the towel is a manual method. In the camera image, the camera image is read to a reference point of the shooting scene 12 201242347 after 'from the camera station After capturing the words after the resignation, take a square skull block centered on the object and store it as a reference for automatic aiming in the future. 8. The camera automatic method according to claim 6, wherein the template comparison method uses a computer program to execute a program, and the same size and size block from the shooting picture. Compare the comparison method based on the similar metrics with the sample obtained from the sample collection step, find the template with the highest similarity to the original template, and then try to map the camera center to the template. At the center, in the process of quasi-standard, it is necessary to repeat the sample comparison and the camera ore steps several times before the parasitic automatic crane can be used to obtain the reference position obtained by the original hand. 9. The camera automatic domain method as described in the patent application 帛8, the similarity measure based on the similar metrics, and the similarity between the placard template and each block on the image being searched. And find the template block with the highest similarity with the template. Commonly used similar measure methods include normalized correlation coefficient method, mean square error, absolute difference combination, intersection and correlation coefficient method and pixel ratio standard deviation. 10. The camera automatic method according to claim 6, wherein the fast convergence method is combined with the template comparison method, and the template obtained in each template comparison process is compared with the previous comparison result respectively. In the vertical direction of movement, if the direction of movement is the same as the direction of the previous movement, that is, moving the camera at the same moving angle of the previous camera, if the direction of movement is opposite to the direction of the previous movement, then one-half of the movement angle of the previous movement is The camera repeats the comparison action and gradually reduces the range of the camera rotation angle until the error value of the subject makes the heart point and the image center less than the preset value. By the fast convergence algorithm, the camera is initially moved at a larger angle. Shooting a towel, Jing Jin, and then gradually observe the camera 13 201242347 direction to accelerate the practice of automatic aiming method. 14
TW100112727A 2011-04-13 2011-04-13 Camera automatic targeting method TW201242347A (en)

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CN103905712B (en) * 2012-12-26 2017-03-01 联想(北京)有限公司 A kind of method of collection image and electronic equipment
CN107347134A (en) * 2016-05-03 2017-11-14 卡讯电子股份有限公司 Utilize the method and system of image positioning meeting radio reception monomer
CN107040700A (en) * 2017-03-24 2017-08-11 江苏工程职业技术学院 A kind of photographic part with cross hair device

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CN101404725B (en) * 2008-11-24 2010-07-21 华为终端有限公司 Camera, camera set, its control method, apparatus and system
CN101964869B (en) * 2009-07-23 2012-08-22 华晶科技股份有限公司 Directed shooting method for panoramic picture
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