CN109827567A - A kind of sunlight is at video display frequency shooting location localization method - Google Patents
A kind of sunlight is at video display frequency shooting location localization method Download PDFInfo
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- CN109827567A CN109827567A CN201910265783.9A CN201910265783A CN109827567A CN 109827567 A CN109827567 A CN 109827567A CN 201910265783 A CN201910265783 A CN 201910265783A CN 109827567 A CN109827567 A CN 109827567A
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Abstract
The invention discloses a kind of sunlights into video display frequency shooting location localization method, comprising the following steps: determines that shooting time is, solar elevation is when shooting, and direct sunlight latitude is when shooting, it is assumed that the longitude where shooting location is that latitude is；Imaginary shadow length is obtained according to the triangle relation of height and shadow length, it is assumed that Beijing time is the reference time, obtains the expression function that imaginary shadow length changes over time；The imaginary curve that shadow length changes over time is drawn according to the function in step (3)；Imaginary curve in step (4) is compared with the control curve in step (1), if imaginary curve and control curve are fitted, (6) is thened follow the steps, otherwise resets longitude and latitude and return step (3)；Video capture site is speculated according to longitude, latitude.
Description
Technical field
The present invention relates to technical field of information processing, specifically a kind of sunlight is at video display frequency shooting location localization method.
Background technique
With the development of science and technology, in some activities such as production, investigation, mapping, it is thus necessary to determine that the shooting location of video, mesh
The preceding shooting location in order to determine video, it usually needs consulting video author is run in many ways, it is cumbersome, and be easy to make video
Person's life interferes.
Summary of the invention
The present invention is to overcome above situation insufficient, it is desirable to provide a kind of technical solution that can solve the above problem.
A kind of sunlight is at video display frequency shooting location localization method, comprising the following steps:
(1) upright object is as reference substance in selecting video, if its height is h, shadow length is l, according to shadow in video
The shadow length l control curve that t changes at any time is drawn in the variation of son；
(2) determine that shooting time is ts, solar elevation is α when shooting, and direct sunlight latitude is δ when shooting, it is assumed that is clapped
Longitude where taking the photograph place is θ, and latitude is
(3) imaginary shadow length L is obtained according to the triangle relation of height h and shadow length l, it is assumed that Beijing time tbFor ginseng
The time is examined, the imaginary shadow length L expression function L (t) that t changes at any time is obtained；
(4) the shadow length L imaginary curve that t changes at any time is drawn according to the function L (t) in step (3)；
(5) imaginary curve in step (4) is compared with the control curve in step (1), if imaginary curve with it is right
According to curve matching, (6) are thened follow the steps, otherwise reset longitude θ and latitudeAnd return step (3)；
(6) according to longitude θ, latitudeSpeculate video capture site.
As further technical solution of the present invention, the expression formula of the imagination shadow length L are as follows:
L=hcot α
And solar elevation α and direct sunlight latitude δ, longitude θ, latitudeWith following relationship:
Wherein ω is the hour angle of longitude θ；
The expression formula of i.e. imaginary shadow length L are as follows:
As further technical solution of the present invention, the direct sunlight latitude δ is acquired by following formula:
Wherein: n is date serial number.
As further technical solution of the present invention, the hour angle ω is acquired by following formula:
ω=15 (ts-12)
Wherein tsFor video capture site the sun when.
As further technical solution of the present invention, the t when sunsIt is acquired by following formula:
The then expression function L (t) of the imaginary shadow length L are as follows:
As further technical solution of the present invention, the longitude θ is east longitude reading, if shooting location is west longitude area,
Then:
θ=360 °-θ '
Wherein: θ ' is west longitude reading.
Compared with prior art, what the present invention obtained has the beneficial effect that the method for the present invention thinking is novel, is existed by reference to object
The shadow length formed under sunlight changes over time the shooting location that rule releases video, finds video work without running in many ways
Person, it is convenient and practical.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
A kind of sunlight is at video display frequency shooting location localization method, comprising the following steps:
(1) upright object is as reference substance in selecting video, if its height is h, shadow length is l, according to shadow in video
The shadow length l control curve that t changes at any time is drawn in the variation of son；
(2) determine that shooting time is ts, solar elevation is α when shooting, and direct sunlight latitude is δ when shooting, it is assumed that is clapped
Longitude where taking the photograph place is θ, and latitude is
(3) imaginary shadow length L is obtained according to the triangle relation of height h and shadow length l, it is assumed that Beijing time tbFor ginseng
The time is examined, the imaginary shadow length L expression function L (t) that t changes at any time is obtained；
(4) the shadow length L imaginary curve that t changes at any time is drawn according to the function L (t) in step (3)；
(5) imaginary curve in step (4) is compared with the control curve in step (1), if imaginary curve with it is right
According to curve matching, (6) are thened follow the steps, otherwise reset longitude θ and latitudeAnd return step (3)；
(6) according to longitude θ, latitudeSpeculate video capture site.
As further technical solution of the present invention, the expression formula of the imagination shadow length L are as follows:
L=hcot α
And solar elevation α and direct sunlight latitude δ, longitude θ, latitudeWith following relationship:
Wherein ω is the hour angle of longitude θ；
The expression formula of i.e. imaginary shadow length L are as follows:
As further technical solution of the present invention, the direct sunlight latitude δ is acquired by following formula:
Wherein: n is date serial number.
As further technical solution of the present invention, the hour angle ω is acquired by following formula:
ω=15 (ts-12)
Wherein tsFor video capture site the sun when.
As further technical solution of the present invention, the t when sunsIt is acquired by following formula:
The then expression function L (t) of the imaginary shadow length L are as follows:
As further technical solution of the present invention, the longitude θ is east longitude reading, if shooting location is west longitude area,
Then:
θ=360 °-θ '
Wherein: θ ' is west longitude reading.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
Claims (6)
1. a kind of sunlight is at video display frequency shooting location localization method, which comprises the following steps:
(1) upright object is as reference substance in selecting video, if its height is h, shadow length is l, according to shadow in video
The shadow length l control curve that t changes at any time is drawn in variation；
(2) determine that shooting time is ts, solar elevation is α when shooting, and direct sunlight latitude is δ when shooting, it is assumed that shooting location
The longitude at place is θ, and latitude is
(3) imaginary shadow length L is obtained according to the triangle relation of height h and shadow length l, it is assumed that Beijing time tbWhen to refer to
Between, obtain the imaginary shadow length L expression function L (t) that t changes at any time；
(4) the shadow length L imaginary curve that t changes at any time is drawn according to the function L (t) in step (3)；
(5) imaginary curve in step (4) is compared with the control curve in step (1), if imaginary curve with compare song
Line fitting, thens follow the steps (6), otherwise resets longitude θ and latitudeAnd return step (3)；
(6) according to longitude θ, latitudeSpeculate video capture site.
2. a kind of sunlight is at video display frequency shooting location localization method according to claim 1, which is characterized in that the imagination
The expression formula of shadow length L are as follows:
L=hcot α
And solar elevation α and direct sunlight latitude δ, longitude θ, latitudeWith following relationship:
Wherein ω is the hour angle of longitude θ；
The expression formula of i.e. imaginary shadow length L are as follows:
。
3. a kind of sunlight is at video display frequency shooting location localization method according to claim 2, which is characterized in that the sun
Direct projection latitude δ is acquired by following formula:
Wherein: n is date serial number.
4. a kind of sunlight is at video display frequency shooting location localization method according to claim 3, which is characterized in that the hour angle
ω is acquired by following formula:
ω=15 (ts-12)
Wherein tsFor video capture site the sun when.
5. a kind of sunlight is at video display frequency shooting location localization method according to claim 4, which is characterized in that the sun
When tsIt is acquired by following formula:
The then expression function L (t) of the imaginary shadow length L are as follows:
。
6. a kind of sunlight is at video display frequency shooting location localization method according to claim 1, which is characterized in that the longitude
θ is east longitude reading, if shooting location is west longitude area:
θ=360 °-θ '
Wherein: θ ' is west longitude reading.
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| CN201910265783.9A CN109827567A (en) | 2019-04-03 | 2019-04-03 | A kind of sunlight is at video display frequency shooting location localization method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813300A (en) * | 2018-12-25 | 2019-05-28 | 维沃移动通信有限公司 | A kind of localization method and terminal device |
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| CN105588569A (en) * | 2015-12-14 | 2016-05-18 | 济南大学 | Method for performing positioning through shadows |
| CN105716603A (en) * | 2016-02-01 | 2016-06-29 | 温州大学 | Method for positioning object according to sun shadow changes of object in video |
| CN106895837A (en) * | 2017-01-04 | 2017-06-27 | 重庆三峡学院 | A kind of sun shadow alignment system and its localization method |
| CN107613461A (en) * | 2017-09-27 | 2018-01-19 | 上海电力学院 | A kind of localization method based on particle cluster algorithm |
| CN108801220A (en) * | 2018-05-31 | 2018-11-13 | 西南交通大学 | The processing method of vedio data based on sun shadow positioning |
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2019
- 2019-04-03 CN CN201910265783.9A patent/CN109827567A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547237A (en) * | 2015-12-14 | 2016-05-04 | 济南大学 | Shadow positioning technology based on least square method |
| CN105588569A (en) * | 2015-12-14 | 2016-05-18 | 济南大学 | Method for performing positioning through shadows |
| CN105716603A (en) * | 2016-02-01 | 2016-06-29 | 温州大学 | Method for positioning object according to sun shadow changes of object in video |
| CN106895837A (en) * | 2017-01-04 | 2017-06-27 | 重庆三峡学院 | A kind of sun shadow alignment system and its localization method |
| CN107613461A (en) * | 2017-09-27 | 2018-01-19 | 上海电力学院 | A kind of localization method based on particle cluster algorithm |
| CN108801220A (en) * | 2018-05-31 | 2018-11-13 | 西南交通大学 | The processing method of vedio data based on sun shadow positioning |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109813300A (en) * | 2018-12-25 | 2019-05-28 | 维沃移动通信有限公司 | A kind of localization method and terminal device |
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