CN205071165U - Spherical video camera - Google Patents
Spherical video camera Download PDFInfo
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- CN205071165U CN205071165U CN201520098309.9U CN201520098309U CN205071165U CN 205071165 U CN205071165 U CN 205071165U CN 201520098309 U CN201520098309 U CN 201520098309U CN 205071165 U CN205071165 U CN 205071165U
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- compensating lamp
- light compensating
- spherical camera
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Abstract
The utility model discloses a spherical video camera belongs to the technical field that makes a video recording to it needs unmatched problem to solve the luminance of light filling lamp and spherical video camera's shooting, has satisfied user's user demand. This spherical video camera includes: the light filling lamp is connected to the switch, opens the other light filling lamp of camera lens that sets up in spherical video camera, light filling lamp brightness adjuster connects the light filling lamp, opens the back at the light filling lamp, adjusts the luminance of light filling lamp.
Description
Technical field
The utility model relates to camera technique field, specifically, relates to a kind of spherical camera.
Background technology
The appearance of increasing white light spherical camera product on market, imply that traditional black and white image at night cannot meet the demand of security protection industry completely.In a lot of application scenarios, spherical camera needs the state remaining on colored shooting for 24 hours, and this means when night-environment brightness is lower, spherical camera needs to enable the light filling that light compensating lamp carries out visible ray.
Inventor finds, light compensating lamp of the prior art cannot meet the shooting requirement of spherical camera, because the brightness ratio of light compensating lamp is comparatively fixed, cannot be regulated.After opening light compensating lamp, the picture brightness value photographed of spherical camera is too high, reduces the image sharpness photographed, cannot meet the user demand of user.
Utility model content
The purpose of this utility model is to provide a kind of spherical camera, needs unmatched problem, meet the user demand of user with the shooting of the brightness and spherical camera that solve light compensating lamp.
The utility model provides a kind of spherical camera, and this spherical camera comprises:
Switch, connects light compensating lamp, opens the light compensating lamp on the camera lens side being arranged at spherical camera;
Light compensating lamp brightness regulator, connects light compensating lamp, after light compensating lamp is opened, regulates the brightness of light compensating lamp.
Wherein, this spherical camera also comprises:
Picture brightness detector, detects picture brightness value;
Iris aperture regulator, connects picture brightness detector, regulates aperture;
Time for exposure adjuster, connects picture brightness detector, regulates the time for exposure;
Fader, connects picture brightness detector, opens luminance gain and luminance gain is adjusted to preset gain.
Wherein, the current field angle that switch calculates according to angle of visual field calculator, opens corresponding light compensating lamp, wherein, light compensating lamp comprises long distance light compensating lamp, middle distance light compensating lamp and low coverage light compensating lamp, and long distance light compensating lamp, middle distance light compensating lamp and low coverage light compensating lamp are distributed in around the camera lens of spherical camera.
Wherein, the irradiating angle of long distance light compensating lamp is 8 °, and coverage distance is 80-300 rice; The middle irradiating angle apart from light compensating lamp is 30 °, and coverage distance is 30-80 rice; The irradiating angle of low coverage light compensating lamp is 60 °, and coverage distance is 0-30 rice.
The utility model brings following beneficial effect: in the utility model embodiment, and this spherical camera is provided with light compensating lamp brightness regulator.After switch open light compensating lamp, light compensating lamp brightness regulator can regulate the brightness of light compensating lamp, to make the photographing request of light compensating lamp As soon as possible Promising Policy spherical camera, improves the shooting effect of spherical camera, improves the experience of user.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, accompanying drawing required in describing is done simple introduction below to embodiment:
Fig. 1 is the structural representation of the spherical camera in the utility model embodiment;
Fig. 2 is the structural representation of spherical camera of the prior art.
Embodiment
Describe execution mode of the present utility model in detail below with reference to drawings and Examples, to the utility model, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the utility model and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection range of the present utility model.
In spherical camera, picture brightness value can be controlled by following three parameters: aperture, time for exposure, gain, and the light intensity that spherical camera can also be regulated to take in by opening and closing light compensating lamp in addition, to adjust picture brightness value.Accordingly, as shown in Figure 1, this spherical camera comprise regulate the iris aperture regulator of aperture, regulate the time for exposure adjuster of time for exposure, regulate the fader of luminance gain, the switch of light compensating lamp that camera lens that opening and closing is arranged at spherical camera is other, switch connects light compensating lamp.
And in the utility model embodiment, this spherical camera is also provided with light compensating lamp brightness regulator.Light compensating lamp brightness regulator connects light compensating lamp, after switch open light compensating lamp, light compensating lamp brightness regulator can regulate the brightness of light compensating lamp, to make the photographing request of light compensating lamp As soon as possible Promising Policy spherical camera, improve the shooting effect of spherical camera, improve the experience of user.
In the prior art, as shown in Figure 2, in order to provide reference, the foundation of work, general spherical camera also to comprise to iris aperture regulator, time for exposure adjuster, fader and switch to be positioned at spherical camera rear end, light-sensitive device back to camera lens.Because light compensating lamp is arranged at by the camera lens of spherical camera usually, therefore the impact of light compensating lamp should can not be subject to back to the light-sensitive device of camera lens, only respond to the change of external environmental light, thus provide reference, the foundation of adjustment to iris aperture regulator, time for exposure adjuster, fader and switch.
But in order to install light-sensitive device, need the rear end perforate at spherical camera.So, the performances such as the waterproof and dustproof of spherical camera are reduced.In addition, because spherical camera is arranged on the hidden place such as corner usually, the light-sensitive device back to camera lens is positioned at backlight place, the brightness of the light that the brightness of its external environmental light detected is taken in lower than camera lens.It is inconsistent that the brightness of the external environmental light detected due to light-sensitive device and camera lens are taken in, inaccurate adjustment has been carried out in the impact that aperture, time for exposure, gain are subject to light-sensitive device, light compensating lamp also likely in unwanted situation by switch open, have impact on the photographic effect of spherical camera.
And the spherical camera that the utility model provides eliminates light-sensitive device, spherical camera inside is provided with the picture brightness detector detecting picture brightness value, improve the performances such as the waterproof and dustproof of spherical camera, and the picture that picture brightness detector detects is the picture that spherical video camera is shot with video-corder, regulate aperture, time for exposure, gain can obtain the suitable photographic effect of brightness as a reference with the testing result of picture brightness detector, also can prevent light compensating lamp from opening in unwanted situation.
The target brightness value preset in picture brightness detector normally sets by day, is set as a brightness value close with Human Perception ambient brightness, to make user's eyes not irriate, comparatively comfortable when the image that this spherical camera of viewing photographs.In general, the target brightness value of each spherical camera is different.
Concrete, ambient brightness in the external world is from the unadjusted situation of all parameters of bright dimmed, spherical camera, the picture brightness value that picture brightness detector detects can lower than preset target brightness value, the spherical shooting chance now connecting picture brightness detector increases aperture, light quantity is entered with what increase spherical camera, improving picture brightness value, the picture brightness value that picture brightness detector is detected is close to the target brightness value preset.
When aperture is adjusted to maximum by iris aperture regulator, but the picture brightness value that picture brightness detector detects is still lower than target brightness value, so the time for exposure adjuster of connection picture brightness detector is by extending the time for exposure of spherical camera, with improving picture brightness value.
Although can by maximum exposure set of time to very long in the field of taking pictures, such as 30s.But in field of video monitoring in order to ensure the real-time of shooting picture, the time for exposure must not higher than 40ms, and namely frame per second must not be less than 25fps.Therefore the maximum exposure time is at most 40ms.In addition, if spherical camera is the product of high frame per second, the longest time for exposure can be shorter.
Fader in the utility model, connect picture brightness detector, be the picture brightness value that picture brightness detector detects lower than the target brightness value preset and iris aperture regulator the aperture of spherical camera has been adjusted to maximum and time for exposure adjuster will extend to maximum the time for exposure time, just unlatching luminance gain luminance gain is adjusted to preset gain.Gain slowly increases with the amplitude of accommodation of 1dB, and picture brightness value slowly promotes.Such as, for the spherical camera that frame per second is 25fps, when being adjusted to maximum exposure time 40ms upon exposure, the picture brightness value that picture brightness detector detects is still lower than target brightness value, now gain will be opened, to improve the camera picture brightness value of spherical camera.
But due to the increase of gain, the signal to noise ratio of picture will reduce, so gain cannot infinitely increase, in the utility model embodiment, luminance gain can be adjusted to preset gain (such as 12dB) at the most.Now, if the camera picture brightness value of spherical camera still cannot reach target brightness value, then switch can when luminance gain is adjusted to preset gain by fader and the picture brightness value that detects of picture brightness detector lower than the target brightness value preset time, open the light compensating lamp that the camera lens that is arranged at spherical camera is other.
Meanwhile, in order to ensure that the brightness of light compensating lamp can meet the shooting needs of spherical camera just, in the utility model embodiment, light compensating lamp brightness regulator is also comprised.Light compensating lamp brightness regulator when luminance gain is adjusted to preset gain by fader and the picture brightness value that detects of picture brightness detector lower than the target brightness value preset time, regulate the brightness of light compensating lamp, gradually the picture brightness value that picture brightness detector detects is promoted to target brightness value.
In addition, in order to improve the camera picture definition of spherical camera, need the signal to noise ratio controlling spherical camera.Therefore, the spherical camera in the utility model embodiment is also provided with snr computation device, the signal to noise ratio of picture when snr computation device can calculate picture signal to noise ratio, particularly luminance gain according to luminance gain are preset gain.
If when the signal to noise ratio that snr computation device calculates picture when luminance gain is preset gain is lower than the threshold value preset, fader should stop luminance gain.Now, switch, when the signal to noise ratio that snr computation device calculates picture when luminance gain is preset gain is lower than the threshold value preset, opens light compensating lamp.And then light compensating lamp brightness regulator, when the signal to noise ratio that snr computation device calculates picture when luminance gain is preset gain is lower than the threshold value preset, regulates the brightness of light compensating lamp with the brightness regulation step-length preset.
Because the height of signal to noise ratio and the luminance gain of spherical camera have direct relation, in order to improve signal to noise ratio, the raising clear picture degree of spherical camera, the luminance gain of spherical camera should be reduced as far as possible.Then in the utility model embodiment, when the picture brightness value that fader can detect at picture brightness detector is equal to or higher than default target brightness value, with the gain adjuster step (such as 1dB) preset, luminance gain is lowered from preset gain.
If after the luminance gain of spherical camera is lowered, the picture brightness value causing the picture brightness detector of spherical camera to detect reduces, and lower than target brightness value, again will raise luminance gain with the gain adjuster step preset.Fader and light compensating lamp brightness regulator coordinate jointly, ensure that the picture brightness value of spherical camera is ideal and picture readability is higher, and then ensure that the experience of user.
Spherical camera operationally, can regulate the parameter such as the angle of visual field, the depth of field by the focal length of adjustment lens wherein, provide the image content meeting user's needs.When light compensating lamp is opened, in order to prevent the generation of flashlight phenomenon, light compensating lamp should be able to match with spherical camera.
Therefore, in embodiment of the present utility model, this spherical camera is provided with angle of visual field calculator and organizes light compensating lamp more.This angle of visual field calculator can utilize the focal length of the lens in spherical camera to calculate the current field angle of spherical camera, the current field angle that switch can calculate according to angle of visual field calculator, opens corresponding light compensating lamp.Wherein, light compensating lamp comprises long distance light compensating lamp, middle distance light compensating lamp and low coverage light compensating lamp, these long distance light compensating lamps, middle distance light compensating lamp and low coverage light compensating lamp are comparatively evenly distributed in around the camera lens of spherical camera, and the incidence surface of the exiting surface of light compensating lamp and camera lens is in the same plane.Ensure that no matter be which kind of light compensating lamp is opened, spherical camera can both get enough illumination, for user provides desirable picture photographing effect.
In embodiment of the present utility model, the irradiating angle of long distance light compensating lamp is chosen as 8 °, and the coverage distance of this long distance light compensating lamp is 80-300 rice; The middle irradiating angle apart from light compensating lamp is chosen as 30 °, and the coverage distance apart from light compensating lamp in this is 30-80 rice; The irradiating angle of low coverage light compensating lamp is chosen as 60 °, and the coverage distance of this low coverage light compensating lamp is 0-30 rice.The number of each light compensating lamp all can be arranged according to actual conditions, and the number of such as long distance light compensating lamp is 3, and the middle number apart from light compensating lamp and low coverage light compensating lamp is 1, and the utility model embodiment does not limit this.
In general, the picture brightness value of spherical camera shooting can not be undergone mutation, but changes lentamente, continuously.Therefore, the picture brightness detector in the utility model embodiment can detect picture brightness value frame by frame, and accordingly, fader, according to the testing result of each frame of picture brightness detector, progressively adjusts luminance gain.When luminance gain is adjusted to preset gain by fader and when the picture brightness value of the present frame that the signal to noise ratio that snr computation device calculates picture when luminance gain is preset gain detects lower than picture brightness detector during the threshold value preset is still lower than the target brightness value preset, the brightness of the brightness regulation step-length adjustment light compensating lamp that can preset.Detection so, adjustment mode, the picture brightness value that picture brightness detector can be made to detect is close with target brightness value all the time, ensure that the picture effect of spherical camera.
Although execution mode disclosed in the utility model is as above, the execution mode that described content just adopts for the ease of understanding the utility model, and be not used to limit the utility model.Technical staff in any the utility model art; under the prerequisite not departing from spirit and scope disclosed in the utility model; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present utility model, the scope that still must define with appending claims is as the criterion.
Claims (4)
1. a spherical camera, is characterized in that, comprising:
Switch, connects light compensating lamp, opens the light compensating lamp on the camera lens side being arranged at spherical camera;
Light compensating lamp brightness regulator, connects light compensating lamp, after light compensating lamp is opened, regulates the brightness of light compensating lamp.
2. spherical camera according to claim 1, is characterized in that, also comprises:
Picture brightness detector, detects picture brightness value;
Iris aperture regulator, connects picture brightness detector, regulates aperture;
Time for exposure adjuster, connects picture brightness detector, regulates the time for exposure;
Fader, connects picture brightness detector, opens luminance gain and luminance gain is adjusted to preset gain.
3. spherical camera according to claim 2, is characterized in that,
The current field angle that switch calculates according to angle of visual field calculator, open corresponding light compensating lamp, wherein, light compensating lamp comprises long distance light compensating lamp, middle distance light compensating lamp and low coverage light compensating lamp, and long distance light compensating lamp, middle distance light compensating lamp and low coverage light compensating lamp are distributed in around the camera lens of spherical camera.
4. spherical camera according to claim 3, is characterized in that,
The irradiating angle of long distance light compensating lamp is 8 °, and coverage distance is 80-300 rice; The middle irradiating angle apart from light compensating lamp is 30 °, and coverage distance is 30-80 rice; The irradiating angle of low coverage light compensating lamp is 60 °, and coverage distance is 0-30 rice.
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| CN201520098309.9U CN205071165U (en) | 2015-02-11 | 2015-02-11 | Spherical video camera |
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| CN201520098309.9U CN205071165U (en) | 2015-02-11 | 2015-02-11 | Spherical video camera |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108156353A (en) * | 2016-12-16 | 2018-06-12 | 廖彩姿 | Multi-section visible light monitoring photographic equipment |
| CN108206918A (en) * | 2016-12-19 | 2018-06-26 | 杭州海康威视数字技术股份有限公司 | A kind of smooth compensation method and device |
| CN108670172A (en) * | 2018-03-20 | 2018-10-19 | 广东欧谱曼迪科技有限公司 | Based on fluorescence navigation method of adjustment in the fluorescence navigation system and its art for surveying light feedback |
| CN111343389A (en) * | 2019-05-16 | 2020-06-26 | 杭州海康慧影科技有限公司 | Automatic exposure control method and device |
| CN112218415A (en) * | 2020-11-06 | 2021-01-12 | 浙江大华技术股份有限公司 | Method, device and equipment for determining illumination intensity of light supplement lamp |
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2015
- 2015-02-11 CN CN201520098309.9U patent/CN205071165U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108156353A (en) * | 2016-12-16 | 2018-06-12 | 廖彩姿 | Multi-section visible light monitoring photographic equipment |
| CN108206918A (en) * | 2016-12-19 | 2018-06-26 | 杭州海康威视数字技术股份有限公司 | A kind of smooth compensation method and device |
| CN108206918B (en) * | 2016-12-19 | 2020-07-03 | 杭州海康威视数字技术股份有限公司 | Optical compensation method and device |
| CN108670172A (en) * | 2018-03-20 | 2018-10-19 | 广东欧谱曼迪科技有限公司 | Based on fluorescence navigation method of adjustment in the fluorescence navigation system and its art for surveying light feedback |
| CN111343389A (en) * | 2019-05-16 | 2020-06-26 | 杭州海康慧影科技有限公司 | Automatic exposure control method and device |
| CN111343389B (en) * | 2019-05-16 | 2021-09-10 | 杭州海康慧影科技有限公司 | Automatic exposure control method and device |
| CN112218415A (en) * | 2020-11-06 | 2021-01-12 | 浙江大华技术股份有限公司 | Method, device and equipment for determining illumination intensity of light supplement lamp |
| CN112218415B (en) * | 2020-11-06 | 2022-03-08 | 浙江大华技术股份有限公司 | Method, device and equipment for determining illumination intensity of light supplement lamp |
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