CN104935852A - Projection angle regulating method based on image analysis - Google Patents
Projection angle regulating method based on image analysis Download PDFInfo
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- CN104935852A CN104935852A CN201510353951.1A CN201510353951A CN104935852A CN 104935852 A CN104935852 A CN 104935852A CN 201510353951 A CN201510353951 A CN 201510353951A CN 104935852 A CN104935852 A CN 104935852A
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Abstract
The invention discloses a projection angle regulating method based on an image analysis. The method comprises the steps that: a camera is installed on a projector; a vertical regulating motor and a level regulating motor are installed in the projector; a projecting area is extracted from a projection picture taken by the camera at first; then the vertical regulating motor is controlled according to the lengths of an upside and a downside of the projection area to regulate a vertical projection angle of the projector; and the level regulating motor is controlled according to the lengths of a left side and a right side of the projection area to regulate a level projection angle of the projector. According to the invention, the projection angle regulating method based on the image analysis is simple in design and convenient for using, and can automatically regulate the projection picture to ensure the optimal angle of the projection picture.
Description
Technical field
The present invention relates to projection field, particularly relate to a kind of projection angle control method based on graphical analysis.
Background technology
Projecting apparatus, under taking in the policy of national promote domestic demands and the people background constantly promoted, the enforcement of Rural Culture ethnic minority regions has promoted the quick growth of China's Projector Market further.According to statistics, within 2010, China's Projector Market shipment amount scale reaches 1,280,000, compares 2009 and increases by 43.6%.Think, within 2011, China's Projector Market will keep quick growth, and annual shipment amount will reach 1,670,000, year rate of growth to be about projecting apparatus be 30%.The five-year, the compound growth rate of China's Projector Market will reach 17.1%.
China projector's product consumption market mainly concentrates on the large-and-medium size cities such as the more flourishing North China of economy, East China, south China.Education, commercial affairs, government, home entertaining are the four large main consumer groups supporting Chinese projector industry.Make a general survey of China's Projector Market.No matter from the quantity of product, quality or kind aspect, all reach certain maturity, the popularization and application of product makes projector change to mass product from comparatively professional display device in the psychological positioning of user, the marketing scale of industry constantly expands, 2010, China's Projector Market sales volume is 1,100,000, compares 2009 and increases by 37.5%.From this 10 years China's Projector Market developments, China's Projector Market scale increases by 18 times, and its average growth rate per annum is 39.14%, and industry is in high-speed development period.
From the development form in industry future, education is still industry future development pillar field.According to statistics, institute of total kindergarten 12.91 ten thousand, the whole nation in 2010, institute of primary school 39.42 ten thousand, general high school 7.90 ten thousand institute, institute of common medium universities and colleges 3047, institute of higher education school 1778, be equipped with a projector by each classroom to calculate, according to related data display China only education sector market capacity just reach more than 1,100 ten thousand, if calculated according to projection occupation rate, projector can account for about 14%-28% (not comprising market maintenance), and the real sales volume of education market in 2010 is less than 500,000.
Secondly, the development in commercial projection market is also the key strength of left and right projector market development.Although China's commercial affairs projection market, in rapid expansion, is estimated according to relevant survey institute, in future, medium-sized and small enterprises quantity will keep the growth rate of 7%-8%, and within 2012, medium-sized and small enterprises sum will reach 5,000 ten thousand, industry development Bright Prospect.In addition, with regard to domestic at present, wealthy family's quantity of assets more than 1,000,000 can reach more than 200 ten thousand, and some elite, white collar are comparatively large for the demand of the quality of life, amusement equipment, and following household application market has a high potential.
Existing projecting apparatus is divided into following a few class according to applied environment:
1, home theater type: be characterized in brightness all about 2000 lumens (along with projection this numeral of development in continuous increase, contrast is higher), picture the ratio of width to height of projection mostly is 16:9, various video port is complete, be applicable to movie and high definition television, be suitable for domestic consumer and use.
2, portable business type projecting apparatus: generally the projecting apparatus weighing less than 2 kilograms is defined as commercial pocket projecting apparatus, this weight is equally matched with light and thin notebook computer.The advantage of commercial affairs pocket projecting apparatus has that volume is little, lightweight, mobility is strong, it is the substitute of traditional slide projector and big-and-middle-sized projecting apparatus, light and thin notebook computer, with the collocation of commercial pocket projecting apparatus, is the first-selection collocation of Mobile business user when carrying out mobile commercial exhibition.
3, educational conference type projecting apparatus: be generally positioned school and enterprise's application, adopt the resolution of main flow, brightness is about 2000-3000 lumen, average weight, heat radiation and dust-proof do relatively good, be applicable to installation and short-distance movement, functional interface is abundanter, easy maintenance, the ratio of performance to price is also relatively high, is applicable to the universal use of buying in enormous quantities.
4, main flow Engineering-type projecting apparatus: the general projectors comparing main flow, the projected area of engineering projecting apparatus is larger, apart from farther, brightness is very high, and generally also support many bulb modes, large-scale changeable installation environment can better be dealt with, all very applicable for fields such as education, media and governments.
5, professional theater type projecting apparatus: this kind of projecting apparatus more emphasis of steadiness, emphasize less trouble, the projecting apparatus aspects such as the convenience of its heat dispersion, network function, use are done very strong.Certainly, in order to adapt to various professional application occasion, the topmost feature of shadow instrument or its high brightness, its brightness generally can reach more than 5000 lumens, and Gao Zheke surpasses 10000 lumens.Due to bulky, Heavy Weight, is used in special purpose usually, such as theater, museum, the great hall, public domain, also can be applicable to the environment such as monitoring and controlling traffic, public security command center, fire-fighting and air traffic control centre.
6, measuring projector: this kind of projecting apparatus is different from above a few class projecting apparatus, early stage title profile projector, along with popularizing of grating scale, high-precision grating scale all installed by projecting apparatus, people are just again measuring projector (or projecting apparatus, CPJ-3015 as domestic more famous measuring projector You Gaocheng company produces), for differentiating with traditional projecting apparatus, this kind of projecting apparatus is just called measuring projector.Product parts is mainly formed by the transmission of light the projecting apparatus amplified by its effect, then determines the size of product with standard flim or grating scale etc.Due to industrialized development, this measuring projector has become one of the most frequently used detecting instrument of manufacturing industry.The mode on schedule projected is divided into vertical projector and horizontal projector.Profile projector and digital projectors is divided into again by the standard difference of its comparison.
But several projecting apparatus above generally all need people manually to adjust projection angle, very inconvenient.
Summary of the invention
Technical problem to be solved by this invention is for defect involved in background technology, provides a kind of projection angle control method based on graphical analysis.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on a projection angle control method for graphical analysis, comprise following steps:
Step 1), projecting apparatus arranges camera, to take the projected picture of projecting apparatus;
Step 2), vertical adjusting motor and Level tune motor are set in projecting apparatus, are respectively used to the vertical projection angle and the floor projection angle that regulate projecting apparatus;
Step 3), extracts view field from the projected picture that camera photographs;
Step 4), the upper edge lengths in compared projections region and lower edge lengths;
Step 4.1), if the upper edge lengths of view field is greater than its lower edge lengths, then controls vertical adjusting motor and the projection angle of projecting apparatus is turned down, until the upper edge lengths of view field equals its lower edge lengths or vertical adjusting motor arrives minimum adjusting position;
Step 4.2), if the upper edge lengths of view field is less than its lower edge lengths, then controls vertical adjusting motor and the projection angle of projecting apparatus is heightened, until the upper edge lengths of view field equals its lower edge lengths or vertical adjusting motor arrives the highest adjusting position;
Step 5), the left side length in compared projections region and the right length;
Step 5.1), if the left side length of view field is greater than length on the right of it, then level of control regulates motor to be adjusted by the projection angle of projecting apparatus to the right, until the left side length of view field equals length or vertical adjusting motor on the right of it arrive the rightest adjusting position;
Step 5.2), if the left side length of view field is less than length on the right of it, then level of control regulates motor to be adjusted by the projection angle of projecting apparatus left, until the left side length of view field equals length or vertical adjusting motor on the right of it arrive the most left adjusting position.
As a kind of further prioritization scheme of projection angle control method based on graphical analysis of the present invention, described camera adopts pinhole cameras.
As a kind of further prioritization scheme of projection angle control method based on graphical analysis of the present invention, the model of described pinhole cameras is SN-319W2.
As a kind of further prioritization scheme of projection angle control method based on graphical analysis of the present invention, described vertical adjusting motor and Level tune motor all adopt DC micromotor.
As a kind of further prioritization scheme of projection angle control method based on graphical analysis of the present invention, the model of described DC micromotor is HR-300-11440-17L.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1. simplicity of design, easy to use;
2. automatically can regulate projected picture, guarantee that the angle of projected picture is optimum.
Embodiment
Below technical scheme of the present invention is described in further detail:
The invention discloses a kind of projection angle control method based on graphical analysis, comprise following steps:
Step 1), projecting apparatus arranges camera, to take the projected picture of projecting apparatus;
Step 2), vertical adjusting motor and Level tune motor are set in projecting apparatus, are respectively used to the vertical projection angle and the floor projection angle that regulate projecting apparatus;
Step 3), extracts view field from the projected picture that camera photographs;
Step 4), the upper edge lengths in compared projections region and lower edge lengths;
Step 4.1), if the upper edge lengths of view field is greater than its lower edge lengths, then controls vertical adjusting motor and the projection angle of projecting apparatus is turned down, until the upper edge lengths of view field equals its lower edge lengths or vertical adjusting motor arrives minimum adjusting position;
Step 4.2), if the upper edge lengths of view field is less than its lower edge lengths, then controls vertical adjusting motor and the projection angle of projecting apparatus is heightened, until the upper edge lengths of view field equals its lower edge lengths or vertical adjusting motor arrives the highest adjusting position;
Step 5), the left side length in compared projections region and the right length;
Step 5.1), if the left side length of view field is greater than length on the right of it, then level of control regulates motor to be adjusted by the projection angle of projecting apparatus to the right, until the left side length of view field equals length or vertical adjusting motor on the right of it arrive the rightest adjusting position;
Step 5.2), if the left side length of view field is less than length on the right of it, then level of control regulates motor to be adjusted by the projection angle of projecting apparatus left, until the left side length of view field equals length or vertical adjusting motor on the right of it arrive the most left adjusting position.
Described camera adopts pinhole cameras, and model is SN-319W2.
Described vertical adjusting motor and Level tune motor all adopt DC micromotor, and model is HR-300-11440-17L.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1., based on a projection angle control method for graphical analysis, it is characterized in that, comprise following steps:
Step 1), projecting apparatus arranges camera, to take the projected picture of projecting apparatus;
Step 2), vertical adjusting motor and Level tune motor are set in projecting apparatus, are respectively used to the vertical projection angle and the floor projection angle that regulate projecting apparatus;
Step 3), extracts view field from the projected picture that camera photographs;
Step 4), the upper edge lengths in compared projections region and lower edge lengths;
Step 4.1), if the upper edge lengths of view field is greater than its lower edge lengths, then controls vertical adjusting motor and the projection angle of projecting apparatus is turned down, until the upper edge lengths of view field equals its lower edge lengths or vertical adjusting motor arrives minimum adjusting position;
Step 4.2), if the upper edge lengths of view field is less than its lower edge lengths, then controls vertical adjusting motor and the projection angle of projecting apparatus is heightened, until the upper edge lengths of view field equals its lower edge lengths or vertical adjusting motor arrives the highest adjusting position;
Step 5), the left side length in compared projections region and the right length;
Step 5.1), if the left side length of view field is greater than length on the right of it, then level of control regulates motor to be adjusted by the projection angle of projecting apparatus to the right, until the left side length of view field equals length or vertical adjusting motor on the right of it arrive the rightest adjusting position;
Step 5.2), if the left side length of view field is less than length on the right of it, then level of control regulates motor to be adjusted by the projection angle of projecting apparatus left, until the left side length of view field equals length or vertical adjusting motor on the right of it arrive the most left adjusting position.
2. the projection angle control method based on graphical analysis according to claim 1, is characterized in that, described camera adopts pinhole cameras.
3. the projection angle control method based on graphical analysis according to claim 2, is characterized in that, the model of described pinhole cameras is SN-319W2.
4. the projection angle control method based on graphical analysis according to claim 1, is characterized in that, described vertical adjusting motor and Level tune motor all adopt DC micromotor.
5. the projection angle control method based on graphical analysis according to claim 4, is characterized in that, the model of described DC micromotor is HR-300-11440-17L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510353951.1A CN104935852A (en) | 2015-06-25 | 2015-06-25 | Projection angle regulating method based on image analysis |
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| CN201510353951.1A CN104935852A (en) | 2015-06-25 | 2015-06-25 | Projection angle regulating method based on image analysis |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101676A (en) * | 2016-07-27 | 2016-11-09 | Tcl集团股份有限公司 | The decision method of a kind of short out-of-focus projection instrument installation site and system |
| CN106412540A (en) * | 2016-11-18 | 2017-02-15 | 四川长虹电器股份有限公司 | Projection display system and automatic alignment method thereof |
| CN107087148A (en) * | 2017-06-30 | 2017-08-22 | 合肥久能图文科技有限公司 | A kind of projector monitors self-adjusting system |
| CN107613281A (en) * | 2017-09-29 | 2018-01-19 | 无锡昊瑜节能环保设备有限公司 | A kind of projecting apparatus adaptively adjusted |
| CN107613282A (en) * | 2017-09-29 | 2018-01-19 | 无锡昊瑜节能环保设备有限公司 | The projection angle method of adjustment of the projecting apparatus adaptively adjusted |
| CN107835399A (en) * | 2017-10-31 | 2018-03-23 | 潍坊歌尔电子有限公司 | The method, apparatus and projector equipment of a kind of projection correction |
| WO2019037148A1 (en) * | 2017-08-22 | 2019-02-28 | 深圳市乐视环球科技有限公司 | Device and method for automatically adjusting position of stereoscopic projection device |
| CN109688390A (en) * | 2018-12-12 | 2019-04-26 | 中国科学院深圳先进技术研究院 | A kind of projected picture auto-correction method, system |
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| CN201732315U (en) * | 2010-06-18 | 2011-02-02 | 彩亿科技(深圳)有限公司 | Projection display notebook computer |
| CN102540667A (en) * | 2010-12-22 | 2012-07-04 | 精工爱普生株式会社 | Projector, projection system, and control method of projector |
| CN103179363A (en) * | 2011-12-23 | 2013-06-26 | 技嘉科技股份有限公司 | Projector and image calibration method for same |
| CN103338342A (en) * | 2013-03-19 | 2013-10-02 | 卿婷 | Self-adaption projector |
| CN103529624A (en) * | 2012-07-04 | 2014-01-22 | 昆盈企业股份有限公司 | Projector capable of automatically correcting trapezoidal image and trapezoidal image automatic correction method of projector |
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Patent Citations (5)
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| CN201732315U (en) * | 2010-06-18 | 2011-02-02 | 彩亿科技(深圳)有限公司 | Projection display notebook computer |
| CN102540667A (en) * | 2010-12-22 | 2012-07-04 | 精工爱普生株式会社 | Projector, projection system, and control method of projector |
| CN103179363A (en) * | 2011-12-23 | 2013-06-26 | 技嘉科技股份有限公司 | Projector and image calibration method for same |
| CN103529624A (en) * | 2012-07-04 | 2014-01-22 | 昆盈企业股份有限公司 | Projector capable of automatically correcting trapezoidal image and trapezoidal image automatic correction method of projector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101676A (en) * | 2016-07-27 | 2016-11-09 | Tcl集团股份有限公司 | The decision method of a kind of short out-of-focus projection instrument installation site and system |
| CN106101676B (en) * | 2016-07-27 | 2019-07-09 | 深圳市Tcl高新技术开发有限公司 | A kind of determination method and system of short focus projector installation site |
| CN106412540A (en) * | 2016-11-18 | 2017-02-15 | 四川长虹电器股份有限公司 | Projection display system and automatic alignment method thereof |
| CN107087148A (en) * | 2017-06-30 | 2017-08-22 | 合肥久能图文科技有限公司 | A kind of projector monitors self-adjusting system |
| WO2019037148A1 (en) * | 2017-08-22 | 2019-02-28 | 深圳市乐视环球科技有限公司 | Device and method for automatically adjusting position of stereoscopic projection device |
| CN107613281A (en) * | 2017-09-29 | 2018-01-19 | 无锡昊瑜节能环保设备有限公司 | A kind of projecting apparatus adaptively adjusted |
| CN107613282A (en) * | 2017-09-29 | 2018-01-19 | 无锡昊瑜节能环保设备有限公司 | The projection angle method of adjustment of the projecting apparatus adaptively adjusted |
| CN107835399A (en) * | 2017-10-31 | 2018-03-23 | 潍坊歌尔电子有限公司 | The method, apparatus and projector equipment of a kind of projection correction |
| CN109688390A (en) * | 2018-12-12 | 2019-04-26 | 中国科学院深圳先进技术研究院 | A kind of projected picture auto-correction method, system |
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Application publication date: 20150923 |