CN105872404A - Digital photo taking device and control method based on dynamic exposure control - Google Patents
Digital photo taking device and control method based on dynamic exposure control Download PDFInfo
- Publication number
- CN105872404A CN105872404A CN201610438384.4A CN201610438384A CN105872404A CN 105872404 A CN105872404 A CN 105872404A CN 201610438384 A CN201610438384 A CN 201610438384A CN 105872404 A CN105872404 A CN 105872404A
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- China
- Prior art keywords
- exposure
- power supply
- cpu
- controlled based
- photographing apparatus
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/72—Combination of two or more compensation controls
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
Abstract
The invention discloses a digital photo taking device and control method based on dynamic exposure control. The device comprises a CMOS (complementary metal-oxide-semiconductor transistor) sensor, an FIFO (first in, first out) memory, a CPU (central processing unit), a communication interface, a lens, a power supply and a light filling lamp, wherein the CMOS sensor is connected with the FIFO memory, the CPU, the lens and the power supply; the CPU is connected with the FIFO memory, the power supply, the communication interface and the light filling lamp; the communication interface is connected with the power supply; the dynamic exposure control digital photo taking device is connected with a host computer. The digital photo taking device adopting the digital photo taking method based on the dynamic exposure control is used, so that the full-color image collection in low-illumination environment can be realized; the full-weather image collection work can be realized by combining the low-power light complementary lamp; the existing water and rain condition data collection basically uses a solar energy mode for power supply; the power consumption requirement on the product is very high; a digital camera using the technology only needs a low-power light filling lamp; the advantages are very obvious.
Description
Technical field
The present invention relates to monitoring and early warning field, particularly to a kind of Digital photographic controlled based on dynamic exposure
Device and control method.
Background technology
There are many natural disasters to take place frequently area in China, need the monitoring strengthening disaster to reduce people to maximize
Member, property loss.In recent years, along with high speed development and the generation of various intelligent terminal of mobile Internet
Disaster monitoring technology is improved constantly, substantially overcomes a large amount of frauds that manned surveys's warning in early days is brought
End.At present, using pluviometer in correlation technique, water-level gauge etc. realizes the monitoring of on-the-spot watermark protocol, can obtain
To data more accurately, but the understanding to site environment is not the most directly perceived, sending out along with electronic technology later
Exhibition also part have employed camcorder technology, but due to technical reason, it is impossible to realize the image under low-light (level) environment
Gather, thus in time disaster information cannot be combined actual environment and be monitored so that in disaster arriving first
Time is issued early warning information notice devastated resident and evacuates.
Summary of the invention
It is an object of the invention to provide a kind of digital photographing apparatus controlled based on dynamic exposure and control method,
Solve the full-color image collection of environment under low illumination, achieve round-the-clock environment in conjunction with small-power light compensating lamp
Image acquisition, reduce product power consumption requirements.
For achieving the above object, the invention provides following scheme:
A kind of digital photographing apparatus controlled based on dynamic exposure, including cmos sensor, first in first out
Memorizer, CPU, communication interface, camera lens, power supply, light compensating lamp, camera lens connects cmos sensor,
Cmos sensor connects push-up storage, CPU, power supply, and push-up storage connects CPU,
CPU connects power supply, communication interface, light compensating lamp connection, and communication interface connects power supply, and power supply connects light filling
Lamp, the digital photographing apparatus that dynamic exposure controls connects host computer.
Optionally, the power input of the digital photographing apparatus controlled based on dynamic exposure and the electric power of host computer
Outfan is connected.
Optionally, cmos sensor includes automatic gain control unit AGC, auto-exposure control unit
AEC。
Optionally, light compensating lamp power is 3-8w.
A kind of digital photographing apparatus control method controlled based on dynamic exposure, it is characterised in that include
Cmos sensor, push-up storage, CPU, communication interface, camera lens, power supply, light compensating lamp,
Cmos sensor is connected with push-up storage, CPU, camera lens, power supply, CPU and first in first out
Memorizer, power supply, communication interface, light compensating lamp connect, and communication interface is connected with power supply, power supply and light compensating lamp
Connecting, the digital photographing apparatus that dynamic exposure controls is connected with host computer, and cmos sensor includes automatically increasing
Benefit control unit AGC, auto-exposure control unit AEC unit, method includes:
Step 1, obtains the instruction that host computer issues；
Step 2, the instruction issued according to host computer, initialize the Digital photographic dress controlled based on dynamic exposure
Put；
Step 3, selects drainage pattern according to current time；
Step 4, according to the drainage pattern selected, initial setting time of exposure and gain parameter；
Step 5, it is thus achieved that cmos sensor gathers ambient light and is evaluated the illumination value of light-metering, automatically obtains
Take exposure time parameter；
Step 6, is set to manually, arrange exposure time parameter by auto-exposure control unit AEC；
Step 7, the ambient lighting obtaining cmos sensor Resurvey arranges exposure gain；
Step 8, is set to automatic gain control unit AGC manually, arrange exposure gain parameter；
Step 9, compares auto-exposure control unit AEC exposure time parameter and automatic gain control unit
AGC exposure gain parameter, auto-exposure control unit AEC exposure time parameter and automatic growth control list
The absolute value of unit's AGC exposure gain parameter difference, less than 10, performs next step, and the absolute values of difference is more than
Perform to obtain cmos sensor collection ambient light equal to 10 and be evaluated the illumination value of light-metering, automatically obtain
Take exposure time parameter；
On-the-spot full-color image after step 10, output high compression.
Optionally, step 1 specifically includes: obtain that host computer issues comprises image resolution ratio, picture quality,
Gather time delay, the instruction of drainage pattern information.
Optionally, step 3, include day mode and Night according to the drainage pattern that current time selects,
The day mode time period is 7:30-in morning 5:30 in afternoon, and the Night time period is in 5:30-morning in the afternoon
7:30.
Optionally, host computer remotely located day mode time period and the Night time period.
Optionally, step 4, according to select drainage pattern, initial setting time of exposure and gain parameter,
Exposure time range is 0-255, day mode exposure time range 0-191, Night time of exposure model
Enclosing for 192-255, exposure gain scope is 0-255, and day mode exposure gain scope is 0-63, night
Exposure mode gain ranging is 64-255.
Optionally, step 5, it is thus achieved that cmos sensor gathers ambient light and is evaluated the illumination value of light-metering,
Automatically obtaining exposure time parameter, if present mode is Night, the exposure time parameter of acquisition is more than
235, open light compensating lamp.
The specific embodiment provided according to the present invention, the invention discloses techniques below effect:
Use the digital camera of the Digital photographic method controlled based on dynamic exposure, can realize under the lowest illumination
The full-color image collection of environment, can realize the image acquisition work of round-the-clock environment in conjunction with small-power light compensating lamp
Making, existing watermark protocol data acquisition the most all uses solar energy mode to power, to the power consumption requirements of product very
Height, uses the digital camera of this technology to have only to the most low power light compensating lamp (3-8w), traditional camera
Needing the light compensating lamp of more than 30W, advantage is clearly.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
Some embodiments of the present invention, for those of ordinary skill in the art, are not paying creative work
On the premise of, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of digital photographing apparatus controlled based on dynamic exposure of the present invention；
1. host computer in figure, 2.COMS sensor, 3. push-up storage, 4.CPU, 5. communication interface,
6. camera lens, 7. power supply, 8. light compensating lamp；
A kind of digital photographing apparatus controlled based on dynamic exposure of Fig. 2 present invention and the enforcement of control method
The flow chart of example.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
It is an object of the invention to provide a kind of digital photographing apparatus controlled based on dynamic exposure and control method,
Solve the full-color image collection of environment under low illumination, achieve round-the-clock environment in conjunction with small-power light compensating lamp
Image acquisition, reduce product power consumption requirements.
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with the accompanying drawings and
The present invention is further detailed explanation for detailed description of the invention.
The invention provides a kind of digital photographing apparatus controlled based on dynamic exposure, sense including CMOS
Device (2), push-up storage (3), CPU (4), communication interface (5), camera lens (6),
Power supply (7), light compensating lamp (8), cmos sensor (2) and push-up storage (3), CPU
(4), camera lens (6), power supply (7) connect, CPU (4) and push-up storage (3), electricity
Source (7), communication interface (5), light compensating lamp (8) connect, and communication interface (5) is with power supply (7) even
Connecing, power supply (7) is connected with light compensating lamp (8), the digital photographing apparatus that dynamic exposure controls and host computer (1)
Connect.
Use the digital camera of the Digital photographic method controlled based on dynamic exposure, can realize under the lowest illumination
The full-color image collection of environment, can realize the image acquisition work of round-the-clock environment in conjunction with small-power light compensating lamp
Making, existing watermark protocol data acquisition the most all uses solar energy mode to power, to the power consumption requirements of product very
Height, uses the digital camera of this technology to have only to the most low power light compensating lamp (3-8w), traditional camera
Needing the light compensating lamp of more than 30W, advantage is clearly.
Present invention also offers a kind of Digital photographic method controlled based on dynamic exposure, the method includes:
Step 201: equipment is powered by host computer, receives the finger that host computer (telemetry terminal system) issues after powering on
Making (including the parameters such as image resolution ratio, picture quality, collection time delay, drainage pattern), equipment is according to this
A little parameters carry out initializing and setting image acquisition parameter；
Step 202: according to time (2 7:30-in morning period 5:30 in afternoon and in 5:30-morning in the afternoon
7:30, this time parameter is arranged by telemetry terminal system and can remotely modifying) whether setting use Night
(5:30-in afternoon 7:30 in morning is Night, is defaulted as day mode), and according to different patterns
Initial setting time of exposure and gain parameter, exposure time range is 0-255, is 0-191 under day mode,
Night is 192-255)；Exposure gain scope 0-255, day mode is 0-63, and Night is
64-255；
Step 203: be acquired obtaining time of exposure to ambient lighting, it is achieved method: AEC etc. is posted
Storage is set to automatically, carry out preview, when reading the exposure of preview between preview to capture
Between parameter: parameter_record；
Step 204: be set to by the depositors such as AEC manually, arranges exposure after writing capture setting
Time parameter: sensor_captureExposure1
Step 205: Resurvey ambient lighting arranges exposure gain；Implementation method: by depositors such as AGC
It is set to automatically, carry out preview, between preview to capture, reads the exposure gain ginseng of preview
Number: parameter_record；
Step 206: be set to by the depositors such as AGC manually, arranges exposure after writing capture setting
Gain parameter: sensor_captureGain1
Step 207: repeat above procedure, when AEC and the AGC parameter similar of 2 times are (less than 10
Time, equipment is thought and is had been adjusted to optimal parameter, carries out photographic actions (capture) according to this parameter；
On-the-spot full-color image after output high compression.
Principle and the embodiment of the present invention are set forth by specific case used herein, above enforcement
The explanation of example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for this area
Those skilled in the art, according to the thought of the present invention, the most all can change
Part.In sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. the digital photographing apparatus controlled based on dynamic exposure, it is characterised in that include that CMOS passes
Sensor, push-up storage, CPU, communication interface, camera lens, power supply, light compensating lamp, described camera lens is even
Connecing described cmos sensor, described cmos sensor connects described push-up storage, described
CPU, described power supply, described push-up storage connects described CPU, described CPU and connects described electricity
Source, described communication interface, described light compensating lamp connect, and described communication interface connects described power supply, described power supply
Connecting described light compensating lamp, the digital photographing apparatus that described dynamic exposure controls connects host computer.
2. device as claimed in claim 1, it is characterised in that the described number controlled based on dynamic exposure
The power input of word photographic means is connected with the power output end of host computer.
A kind of digital photographing apparatus controlled based on dynamic exposure, its feature exists
In, described cmos sensor includes automatic gain control unit AGC, auto-exposure control unit AEC.
A kind of digital photographing apparatus controlled based on dynamic exposure, its feature exists
In, described light compensating lamp power is 3-8w.
5. the digital photographing apparatus control method controlled based on dynamic exposure, it is characterised in that include
Cmos sensor, push-up storage, CPU, communication interface, camera lens, power supply, light compensating lamp, institute
Stating camera lens and connect described cmos sensor, described cmos sensor connects described first in first out storage
Device, described CPU, described power supply, described push-up storage connects described CPU, described CPU even
Connecing described power supply, described communication interface, the connection of described light compensating lamp, described communication interface connects described power supply,
Described power supply connects described light compensating lamp, and the digital photographing apparatus that described dynamic exposure controls connects host computer, institute
State cmos sensor and include automatic gain control unit AGC, auto-exposure control unit AEC unit,
Described method includes:
Step 1, obtains the instruction that described host computer issues；
Step 2, the instruction issued according to described host computer, initialize the described number controlled based on dynamic exposure
Word photographic means；
Step 3, selects drainage pattern according to current time；
Step 4, according to the drainage pattern of described selection, initial setting time of exposure and gain parameter；
Step 5, it is thus achieved that described cmos sensor gathers ambient light and is evaluated the illumination value of light-metering, from
Dynamic acquisition exposure time parameter；
Step 6, is set to manually, arrange exposure time parameter by described auto-exposure control unit AEC；
Step 7, the ambient lighting obtaining described cmos sensor Resurvey arranges exposure gain；
Step 8, is set to manually, arrange exposure gain parameter by described automatic gain control unit AGC；
Step 9, relatively described auto-exposure control unit AEC exposure time parameter and automatic growth control
Unit AGC exposure gain parameter, described auto-exposure control unit AEC exposure time parameter and automatically increasing
The absolute value of benefit control unit AGC exposure gain parameter difference, less than 10, performs next step, and poor is absolute
Value value gathers ambient light more than or equal to the 10 execution described cmos sensors of described acquisition and is evaluated light-metering
Illumination value, automatically obtain the step of exposure time parameter；
On-the-spot full-color image after step 10, output high compression.
A kind of digital photographing apparatus control method controlled based on dynamic exposure,
It is characterized in that, described step 1 specifically includes: obtain that described host computer issues comprises image resolution ratio,
Picture quality, gathers time delay, the instruction of drainage pattern information.
7. method as claimed in claim 5, it is characterised in that described step 3 specifically includes: according to
The drainage pattern that current time selects includes that day mode and Night, described day mode time period are early
Upper 7:30-5:30 in afternoon, the described Night time period is 5:30-in afternoon 7:30 in morning.
A kind of digital photographing apparatus control method controlled based on dynamic exposure,
It is characterized in that, described host computer remotely located described day mode time period and described Night time
Section.
9. a kind of digital photographing apparatus control method controlled based on dynamic exposure as described in claim 5-8,
It is characterized in that, described step 4 specifically includes: according to the drainage pattern of described selection, initial setting exposes
Time and gain parameter, described exposure time range is 0-255, day mode exposure time range 0-191,
Night exposure time range is 192-255, and described exposure gain scope is 0-255, and day mode exposes
Gain of light scope is 0-63, and Night exposure gain scope is 64-255.
A kind of digital photographing apparatus control method controlled based on dynamic exposure,
It is characterized in that, described step 5 specifically includes: obtains described cmos sensor collection ambient light and enters
Row evaluates the illumination value of light-metering, automatically obtains exposure time parameter, if present mode is Night, obtains
The exposure time parameter taken is more than 235, opens described light compensating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610438384.4A CN105872404A (en) | 2016-06-17 | 2016-06-17 | Digital photo taking device and control method based on dynamic exposure control |
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|---|---|---|---|
| CN201610438384.4A CN105872404A (en) | 2016-06-17 | 2016-06-17 | Digital photo taking device and control method based on dynamic exposure control |
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| CN105872404A true CN105872404A (en) | 2016-08-17 |
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| CN201610438384.4A Pending CN105872404A (en) | 2016-06-17 | 2016-06-17 | Digital photo taking device and control method based on dynamic exposure control |
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Cited By (2)
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| CN107819991A (en) * | 2017-11-27 | 2018-03-20 | 成都力鑫科技有限公司 | Dynamic exposure is set to compensate digital camera method |
| CN108243314A (en) * | 2016-12-27 | 2018-07-03 | 佳能株式会社 | Image pick up equipment, image capture system and movable body |
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Application publication date: 20160817 |