CN1601276A - Fireworks effective image measaring method - Google Patents
Fireworks effective image measaring method Download PDFInfo
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- CN1601276A CN1601276A CN 200410046858 CN200410046858A CN1601276A CN 1601276 A CN1601276 A CN 1601276A CN 200410046858 CN200410046858 CN 200410046858 CN 200410046858 A CN200410046858 A CN 200410046858A CN 1601276 A CN1601276 A CN 1601276A
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- point
- fireworks
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- value
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Abstract
The invention relates to a fireworks effect image measuring method. Said method is characterized by that an electronic theodolite is erected on a fixed point, and a digital camera is mounted on sighting telescope of electronic theodolite, and the optical axis centre of digital camera and the optical axis centre of the electronic theodolite are identical. The lens of the camera can be directed at pre-estimated height for setting off fireworks and fixed. When the fireworks are set off. The whole process of setting off fireworks can be recorded, and then pitch angle value also can be recorded well, so that the pitch angle from testing point to firing point and oblique distance can be measured, and the height from explosive point of fireworks to firing point and visual parameters of setting off fireworks can be obtained. Said invention candetect explosive height and explosive range of the fireworks.
Description
Technical field
The present invention relates to a kind of Image Measuring Method for Fireworks Display Effect, relate in particular to the comprehensive image method of measurement fireworks of a kind of computing machine, electronic theodolite, Digital Video or digital camera combined platform, can be used for the examination and test of products of fireworks manufacturer, new product development exploitation, also can be used for the detection of customs examination and quarantine system fireworks exporting.Belong to field of measuring technique.
Background technology
In the fireworks production field, along with the standardization and the product development of market management are developed, standardized the improving constantly of check, the production exploitation of fireworks, the technological means of check must adapt to its development.During fireworks in the past detect all is by the human eye Direct observation, estimates that by rule of thumb data error is big, poor reliability.
Full-fledged along with computer image processing technology and automatic measurement technical equipment provides technology and material base for the firework display effect detects by image.But the conventional images measuring method all is the measurement to ground deposit cubing and fixed object sectional area, as application for a patent for invention number be 00125483.9 " image measuring method of volume of large material stack ", be that a kind of ccd video camera that utilizes is to the large-scale ground bank (fire coal of ground stacking, grain, chemical fertilizer and building materials etc.) from 0 °, 45 °, 90 °, 135 ° of four directions are taken bank, obtain the side view of the bank on the different directions, bank and video camera fixed distance, the bank next door is provided with scale, input collecting image of computer card, in computing machine, image is carried out edge identification, obtain the clear outline line of the side view of bank, be combined into a pyramid by the outline line of the side view of all angles, obtain each cross-sectional area in the pyramid, ask for the volume of bank.Do not retrieve at present the document and the patent of the image detection of relevant firework display effect as yet.
Summary of the invention:
The technical problem to be solved in the present invention is, deficiency at the prior art existence, a kind of Image Measuring Method for Fireworks Display Effect is proposed, take actual image and the corresponding luffing angle reading seted off of fireworks by the combination of electronic theodolite, Digital Video or digital camera, measure the distance of ignition point by relevant mode, in the process Computer Image Processing, be mainly used in the height of burst, the explosive range (area) that detect fireworks and detect, and measure easy, simple and clear, the measurement result data science is reliable.
Technical solution of the present invention is: described Image Measuring Method for Fireworks Display Effect is (referring to Fig. 1):
1. on the fixed range of distance firework bomb ignition point, set up electronic theodolite, this electronic theodolite position is test point C, and on the finder telescope of electronic theodolite, Digital Video is installed, make the optical axis center of Digital Video consistent during installation with the optical axis center of electronic theodolite;
2. camera lens is aimed at pre-estimate set off height and fixing, when setting off, start the key of shooting with video-corder of Digital Video, record whole process and the good luffing angle value at that time of record of setting off;
3. record test point C to launching site C
1Angle of pitch ε
FfWith inclined range D
o, and draw as follows:
A. test point C is to launching site C
1Horizontal range D
s
D
s＝D
o×COS(ε
ff)；
B. test point C is to launching site C
1Height difference H
f:
H
f＝D
x×Sin(ε
ff)；
C. read the angle of pitch ε at camera field of view center by electronic theodolite
FfAnd with its value through RS232 interface input robot calculator, establish video camera and take the photograph to such an extent that the screen scope of fireworks high burst position is ABJK, screen center's point is O, draws the inclined range D of test point C to central point O
Sx:
D
sx＝D
s÷COS(ε
ff)；
4. in the ABJK scope, screen center's point O is the rectangular coordinate system of initial point, draws respectively:
A. the fried point (explosion center point) of fireworks is apart from the height H on launching site (ground)
z(referring to Fig. 2):, read the screen coordinate X of fried point by image with fireworks image input computing machine
zY
z, then:
ε
z=ε
Sf+ Y
zIn * α the formula, ε
zBe the luffing angle value of fried point, α for each pixel pairing level angle value and luffing angle value (for example the visual field of video camera is 30 ° * 24 °, and image resolution ratio is 720 * 576, then α=2.5 '/point);
H
z＝D
s×t
g(ε
z)-H
f
Among Fig. 2 because H
fBe negative value, following formula also can be write as
H
z＝D
s×t
g(ε
z)+|H
f|；
B. draw the visual equivalent area S of firework display (referring to Fig. 3), read screen coordinate Y
1Y
2, be converted into the angle of pitch ε corresponding with screen center's point O
1, ε
2, obtain the height value H of minimum point in the firework display image
1Height value H with peak
2, draw the minor axis length b=H of equivalent ellipsoidal
2-H;
Read screen coordinate X
1X
2, be converted into the horizontal angle beta corresponding with screen center's point O
1, β
2, draw in the firework display image distance value L of two-end-point and screen center's point O on the oval horizontal direction
1, L
2:
L
1＝D
s×tgβ
1，
L
2＝D
s×tgβ
2，
Then the long axis length a of equivalent ellipsoidal is:
a＝L
1+L
2，
So setting off area is:
S＝π.a.b。
As known from the above, the present invention is an Image Measuring Method for Fireworks Display Effect, it takes actual image and the corresponding luffing angle reading of the automatic record of computing machine seted off of fireworks by the combination of electronic theodolite, Digital Video or digital camera, measure the distance of ignition point by relevant mode, in the process Computer Image Processing, be mainly used in the height of burst, the explosive range (area) that detect fireworks and detect, and measure easy, simple and clear, the measurement result data science is reliable.
Description of drawings:
Fig. 1 is the schematic diagram of the inventive method;
Fig. 2 is a schematic diagram of asking for fried some height;
Fig. 3 is a schematic diagram of asking for the firework display equivalent area.
In the drawings, 1-Digital Video, 2-electronic theodolite, 3-launching tube.
Embodiment:
According to Fig. 1 to Fig. 3 and above-mentioned measuring method, to the fried aloft some height of the colored bullet of certain trade mark and set off area and measure.The visual field of Digital Video 1 is 30 ° * 24 °, and image resolution ratio is 720 * 576, the angle of electronic theodolite is exported serial line interface RS232 be connected with the ordinary electronic computing machine, realizes on-the-spot measurement in real time.
Claims (1)
1. Image Measuring Method for Fireworks Display Effect, it is characterized in that on the fixed range of distance firework bomb ignition point, setting up electronic theodolite, this electronic theodolite position is test point C, and on the finder telescope of electronic theodolite, Digital Video is installed, make the optical axis center of Digital Video consistent during installation with the optical axis center of electronic theodolite; With camera lens aim at pre-estimate set off height and fixing, when setting off, start the key of shooting with video-corder of Digital Video, record whole process and the good luffing angle value at that time of record of setting off.This method is: record test point C to launching site C
1Angle of pitch ε
FfWith inclined range D
x, and draw as follows:
A. test point C is to launching site C
1Horizontal range D
s:
D
s＝D
x×COS(ε
ff)；
B. test point C is to the height difference H of launching site C1
f:
H
f＝D
x×Sin(ε
ff)；
C. read the angle of pitch ε at camera field of view center by electronic theodolite
FfAnd with its value through RS232 interface input robot calculator, establish video camera and take the photograph to such an extent that the screen scope of fireworks high burst position is ABJK, screen center's point is O, draws the inclined range D of test point C to central point O
Sx:
D
sx＝D
s÷COS(ε
ff)；
In the ABJK scope, screen center's point O is the rectangular coordinate system of initial point, draws respectively:
A. the fried point (explosion center point) of fireworks is apart from the height H on launching site (ground)
z(referring to Fig. 2):
With fireworks image input computing machine, read the screen coordinate X of fried point by image
zY
z, then:
ε
z＝ε
sf+Y
z×α
In the formula, ε
zBe the luffing angle value of fried point, α for each pixel pairing level angle value and luffing angle value (for example the visual field of video camera is 30 ° * 24 °, and image resolution ratio is 720 * 576, then α=2.5 '/point);
H
z＝D
s×tg(ε
z)-H
f
Among Fig. 2 because H
fBe negative value, following formula also can be write as
H
z＝D
s×tg(ε
z)+|H
f|；
B. draw the visual equivalent area S of firework display (referring to Fig. 3):
Read screen coordinate Y
1Y
2, be converted into the angle of pitch ε corresponding with screen center's point O
1, ε
2, obtain the height value H of minimum point in the firework display image
1Height value H with peak
2, draw the minor axis length b=H of equivalent ellipsoidal
2-H; Read screen coordinate X
1X
2, be converted into the horizontal angle beta corresponding with screen center's point O
1, β
2, draw in the firework display image distance value L of two-end-point and screen center's point O on the oval horizontal direction
1, L
2:
L
1＝D
s×tgβ
1，
L
2＝D
s×tgβ
2，
Then the long axis length a of equivalent ellipsoidal is:
a＝L
1+L
2，
So setting off area is:
S＝π.a.b。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410046858 CN1285909C (en) | 2004-10-22 | 2004-10-22 | Fireworks effective image measaring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410046858 CN1285909C (en) | 2004-10-22 | 2004-10-22 | Fireworks effective image measaring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601276A true CN1601276A (en) | 2005-03-30 |
| CN1285909C CN1285909C (en) | 2006-11-22 |
Family
ID=34665717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410046858 Expired - Fee Related CN1285909C (en) | 2004-10-22 | 2004-10-22 | Fireworks effective image measaring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1285909C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101210B (en) * | 2006-07-03 | 2012-02-22 | 宾得励精科技(上海)有限公司 | Measuring device |
| CN101441676B (en) * | 2008-12-24 | 2012-04-18 | 上海幻视信息技术有限公司 | Method, device and system for computing fireworks setting-off angle |
| CN101101212B (en) * | 2006-07-03 | 2013-07-03 | 宾得励精科技(上海)有限公司 | Measuring device |
| CN103884273A (en) * | 2013-09-18 | 2014-06-25 | 林森 | Multi-view spatial movement flexible body instantaneous position and profile measurement device |
| CN109883536A (en) * | 2019-01-29 | 2019-06-14 | 北京理工大学 | A kind of three wave point continuous capturing method of shock wave |
-
2004
- 2004-10-22 CN CN 200410046858 patent/CN1285909C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101210B (en) * | 2006-07-03 | 2012-02-22 | 宾得励精科技(上海)有限公司 | Measuring device |
| CN101101212B (en) * | 2006-07-03 | 2013-07-03 | 宾得励精科技(上海)有限公司 | Measuring device |
| CN101441676B (en) * | 2008-12-24 | 2012-04-18 | 上海幻视信息技术有限公司 | Method, device and system for computing fireworks setting-off angle |
| CN103884273A (en) * | 2013-09-18 | 2014-06-25 | 林森 | Multi-view spatial movement flexible body instantaneous position and profile measurement device |
| CN109883536A (en) * | 2019-01-29 | 2019-06-14 | 北京理工大学 | A kind of three wave point continuous capturing method of shock wave |
| CN109883536B (en) * | 2019-01-29 | 2020-05-29 | 北京理工大学 | Shock wave three-wave-point continuous capturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285909C (en) | 2006-11-22 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061122 Termination date: 20101022 |