CN104660895A - Novel SDI wide dynamic range (WDR) human face capturing camera - Google Patents
Novel SDI wide dynamic range (WDR) human face capturing camera Download PDFInfo
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- CN104660895A CN104660895A CN201510042814.6A CN201510042814A CN104660895A CN 104660895 A CN104660895 A CN 104660895A CN 201510042814 A CN201510042814 A CN 201510042814A CN 104660895 A CN104660895 A CN 104660895A
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Abstract
The invention discloses a novel SDI wide dynamic range (WDR) human face capturing camera which includes a housing (2) and a lens (1), wherein the lens (1) is connected with the housing (2) through a lens interface arranged on a housing front panel (5); a control module, a WDR processing module, a wireless communication module, an SDI transmitting module, a CCD sensor and a color filter are arranged in the housing (2); the control module is respectively connected with the WDR processing module, the wireless communication module and the SDI transmitting module; the WDR processing module is also connected with the CCD sensor; the CCD senor is connected with the lens through the color filter; an SDI interface is arranged on a housing rear panel; the SDI interface is connected with the SDI transmitting module. The novel SDI WDR human face capturing camera provided by the invention adopts the SDI interface to transmit video signals, and can obtain clear images in a sharp contrast environment.
Description
Technical field
The present invention relates to video camera, particularly relate to the wide dynamic human face candid camera of a kind of New type of S DI.
Background technology
SDI interface is a kind of " digital component serial line interface ", and HD-SDI interface is a kind of high-definition digital input and output port of broadcast level, and wherein HD represents high-definition signal.Because SDI interface directly can not transmit compression digital signal, after the compressed signal playback of the equipment records such as digital VTR, hard disk, must export through decompress(ion) and through SDI interface and just can enter SDI system.If decompress(ion) and compression repeatedly, image quality decrease and time delay will be caused to increase, the digital VTR of various different-format and nonlinear editing system, define the interface for directly transmitting compression digital signal of oneself for this reason.3G-SDI is third generation SDI, along with the appearance of the high definitions such as 1080i and 720P (HD) video standard, docking port has carried out adjusting to process higher 1.485Gbps data rate, 1.485-Gbps serial line interface is commonly called HD-SDI interface, defined by SMPTE292M, it uses 75 same ohm coaxial cable.SMPTE have approved the new standard of SMPTE424M by name, and in 75 same ohm coaxial cable, SDI data rate doubles, and reaches 2.97Gbps.This new standard is also referred to as 3-Gbps(3G) SDI, supports the picture quality that the resolution such as 1080P and digital camera is higher.
When the high-brightness region of traditional video camera under intense light source (daylight, light fixture or reflective etc.) is irradiated and the lower region of the relative brightness such as shade, backlight exist in the picture simultaneously, its image exported there will be bright areas becomes white because of over-exposed, and dark area becomes black because of under-exposure, have a strong impact on picture quality.Video camera in Same Scene to brightest area and compared with the performance of dark areas be exist limitation, this limitation is exactly usual said " dynamic range "." dynamic range " refers to the span that the things of a certain change may change, and namely the least significant end limit of its changing value is to the region between most significant end limit, and the description in this region is generally the difference between peak and minimum point.This is application concept widely, when referring to the photographic images index of video camera product, general " dynamic range " refers to that video camera is to the adaptive capacity of scene light in photographed scene according to reflection, specifically refers to the excursion of brightness (contrast) and colour temperature (contrast).Traditional cameras only has the dynamic range of 3: 1, and it only to whole image sampling once, will inevitably occur region transitions bright in whole image exposure in the process gathering piece image, or the under exposed phenomenon in darker region.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the wide dynamic human face candid camera of a kind of New type of S DI is provided, adopt SDI interface transmission video signal, image clearly can be obtained under striking contrast environment simultaneously.
The object of the invention is to be achieved through the following technical solutions: the wide dynamic human face candid camera of a kind of New type of S DI, it comprises casing and camera lens, camera lens is connected with casing by the lens interface be arranged on casing front panel, control module is provided with in casing, wide dynamic process module, wireless communication module, SDI sending module, ccd sensor and colored filter, control module respectively with wide dynamic process module, wireless communication module is connected with SDI sending module, wide dynamic process module is also connected with ccd sensor, ccd sensor is connected with camera lens by colored filter, casing rear board is provided with SDI interface, SDI interface is connected with SDI sending module.
Cabinet top on described casing is also provided with two fixing holes.
Described SDI interface is BNC connector.
Described SDI interface is 3G-SDI interface.
Described casing rear board is also provided with RS485 interface, RS232 interface, audio interface and LAN interface.
Described audio interface comprises audio input interface and audio output interface.
The invention has the beneficial effects as follows: (1) adopts SDI joint transmission video signal, without the need to compressing vision signal, can not cause image fault, not affect by transmission network, can not produce picture delay problem; (2) BNC connector can realize coaxial cable power supply; (3) wide dynamic process module can realize video camera and obtain image clearly under contrast_environment strongly; (4) wireless communication module can realize mobile client monitoring; (5) between ccd sensor and camera lens, colored filter is installed, can realizes day and night monitoring.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the wide dynamic human face candid camera of SDI of the present invention;
Fig. 2 is the structured flowchart of the wide dynamic human face candid camera of SDI of the present invention;
In figure, 1-camera lens, 2-casing, 3-fixing hole, 4-cabinet top, 5-casing front panel.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, the wide dynamic human face candid camera of a kind of New type of S DI, it comprises casing 2 and camera lens 1, and camera lens 1 is connected with casing 2 by the lens interface be arranged on casing front panel 5, casing rear board is provided with SDI interface.
Cabinet top 4 on described casing 2 is also provided with two fixing holes, 3, two fixing holes 3 for being fixed on above other objects by video camera.
Described SDI interface is BNC connector, can realize coaxial cable power supply.
Described SDI interface is 3G-SDI interface, adopt SDI interface transmission video signal, without the need to by vision signal by Internet Transmission after overcompression and packing, can directly with the digital signal of uncompressed high-speed transfer on coax, original image can not distortion; In addition, do not affect by transmission network, can not produce picture delay problem, its transmission rate reaches as high as 2.97Gb/s.
Described casing rear board is also provided with RS485 interface, RS232 interface, audio interface, Micro SD draw-in groove and LAN interface.
Described audio interface comprises audio input interface and audio output interface.
Described lens interface is C/CS interface.
As shown in Figure 2, control module, wide dynamic process module, wireless communication module, SDI sending module, ccd sensor and colored filter is provided with in casing 2, control module is connected with wide dynamic process module, wireless communication module and SDI sending module respectively, wide dynamic process module is also connected with ccd sensor, ccd sensor is connected with camera lens by colored filter, and SDI sending module is connected with SDI interface.
Described wide dynamic process module can realize video camera and obtain image clearly under contrast_environment strongly; concrete steps are: video camera first carries out an instantaneous exposure to bright areas, obtain a clear normal image in width highlights region and are stored in wide dynamic process module; And then a slow is carried out to dark portion region in scene, obtain a width dark portion regional display clearly image be also stored in wide dynamic process module; More than after exposure, wide dynamic process module utilizes self distinctive image processing algorithm, part suitable for brightness in the middle of two width images is cut down respectively, finally carries out superposition and synthesizes and export an all apparent image in width light and shade region; So just can avoid highlight exposure excessively and the problem of shadow exposure deficiency, thus make whole picture all high-visible, to realize wide dynamic treatment effect.
Video signal data is converted to the data that meet SDI call format and these data is sent to miscellaneous equipment by SDI interface by described SDI sending module.
Described wireless communication module realizes the radio communication between miscellaneous equipment, realizes monitoring in mobile client.
Claims (6)
1. the wide dynamic human face candid camera of New type of S DI, it is characterized in that: it comprises casing (2) and camera lens (1), camera lens (1) is connected with casing (2) by the lens interface be arranged on casing front panel (5), casing is provided with control module in (2), wide dynamic process module, wireless communication module, SDI sending module, ccd sensor and colored filter, control module respectively with wide dynamic process module, wireless communication module is connected with SDI sending module, wide dynamic process module is also connected with ccd sensor, ccd sensor is connected with camera lens by colored filter, casing rear board is provided with SDI interface, SDI interface is connected with SDI sending module.
2. the wide dynamic human face candid camera of a kind of New type of S DI according to claim 1, is characterized in that: the cabinet top (4) on described casing (2) is also provided with two fixing holes (3).
3. the wide dynamic human face candid camera of a kind of New type of S DI according to claim 1, is characterized in that: described SDI interface is BNC connector.
4. the wide dynamic human face candid camera of a kind of New type of S DI according to claim 1, is characterized in that: described SDI interface is 3G-SDI interface.
5. the wide dynamic human face candid camera of a kind of New type of S DI according to claim 1, is characterized in that: described casing rear board is also provided with RS485 interface, RS232 interface, audio interface and LAN interface.
6. the wide dynamic human face candid camera of a kind of New type of S DI according to claim 5, is characterized in that: described audio interface comprises audio input interface and audio output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042814.6A CN104660895A (en) | 2015-01-28 | 2015-01-28 | Novel SDI wide dynamic range (WDR) human face capturing camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042814.6A CN104660895A (en) | 2015-01-28 | 2015-01-28 | Novel SDI wide dynamic range (WDR) human face capturing camera |
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| CN104660895A true CN104660895A (en) | 2015-05-27 |
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| CN201510042814.6A Pending CN104660895A (en) | 2015-01-28 | 2015-01-28 | Novel SDI wide dynamic range (WDR) human face capturing camera |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112218049A (en) * | 2020-09-29 | 2021-01-12 | 北京环境特性研究所 | Video monitoring device |
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| CN101860675A (en) * | 2010-05-21 | 2010-10-13 | 深圳市艾威视数码科技有限公司 | Wide dynamic camera and method for realizing wide dynamic camera shooting |
| CN201657127U (en) * | 2010-05-21 | 2010-11-24 | 深圳市艾威视数码科技有限公司 | Wide dynamic camera |
| CN202121687U (en) * | 2011-06-21 | 2012-01-18 | 上海银晨智能识别科技有限公司 | Wide dynamic intelligent camera |
| CN203313323U (en) * | 2013-06-20 | 2013-11-27 | 深圳市迪威泰实业有限公司 | Special SDI high-definition micro video camera for ATMs |
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2015
- 2015-01-28 CN CN201510042814.6A patent/CN104660895A/en active Pending
Patent Citations (5)
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| US20090066816A1 (en) * | 2006-03-20 | 2009-03-12 | Sony Corporation | Image signal processing device and image signal processing method |
| CN101860675A (en) * | 2010-05-21 | 2010-10-13 | 深圳市艾威视数码科技有限公司 | Wide dynamic camera and method for realizing wide dynamic camera shooting |
| CN201657127U (en) * | 2010-05-21 | 2010-11-24 | 深圳市艾威视数码科技有限公司 | Wide dynamic camera |
| CN202121687U (en) * | 2011-06-21 | 2012-01-18 | 上海银晨智能识别科技有限公司 | Wide dynamic intelligent camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112218049A (en) * | 2020-09-29 | 2021-01-12 | 北京环境特性研究所 | Video monitoring device |
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Application publication date: 20150527 |