CN203368604U - Camera white balance testing cards - Google Patents
Camera white balance testing cards Download PDFInfo
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- CN203368604U CN203368604U CN 201320394931 CN201320394931U CN203368604U CN 203368604 U CN203368604 U CN 203368604U CN 201320394931 CN201320394931 CN 201320394931 CN 201320394931 U CN201320394931 U CN 201320394931U CN 203368604 U CN203368604 U CN 203368604U
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Abstract
Provided are camera white balance testing cards which comprise three different standard color cards including a red card, a green card, and a blue card. Each standard color card comprises a substrate layer, a color layer, and a coating layer. The color layer is printed on the substrate layer and is coated with the coating layer. The color layer on each standard color card is divided into a left color area and a right color area which have different colors. The red card is divided into a red area and a white area. The green card is divided into a green area and a white area. The blue card is divided into a blue area and a white area. Red, green, blue, and white are configured standard testing colors after multiple experimental data analysis. When the color temperature of an adjusting lamp box varies, the color reproduction capability of a tested camera to the three standard color cards has an obvious and visualized contrast effect. Thus, thinking is provided for a while balance adjusting circuit and the color reproduction capabilities of cameras are embodied.
Description
Technical field
The utility model relates to the technical field of video camera, is a kind of video camera white balance chart that is applicable to all kinds of security monitoring video cameras and ordinary digital camera specifically.
Background technology
The basic conception of white balance is " no matter under any light source, white object can be reduced to white ", and the colour cast phenomenon occurred during to shooting under specific light source, should compensate by strengthening corresponding complementary color.
General video camera all possesses automatic white balance function, can tackle most of photographed scenes, but automatic white balance function can not be avoided the unbalance of tone under complicated light environment.The white balance reducing power of video camera is subject to the restriction of its optical system, internal circuit configuration, also is subject to the impact of environment colour temperature simultaneously, therefore needs to guarantee that through strict test it can show reducing power accurately under most environment.
At present common 24 colour atlas and white test card are through multiple authentication on the market, and the white balance reducing power that can not effectively test video camera, therefore need a kind of effectively white balance chart more directly perceived of design.
Video camera is identical to the magnification ratio of three kinds of colors of RGB in preset situation, is the relation of 1:1:1, and the adjustment of white balance is exactly to have changed this proportionate relationship according to the scenery by adjustment.Such as the indigo plant by adjustment scenery, proportionate relationship green, red light are that 2:1:1(blue light ratio is many, colour temperature is higher), proportionate relationship after blank level adjustment is 1:2:2 so, the obviously ratio of indigo plant minimizing in circuit magnification ratio after adjustment, increased green and red ratio, arrived captured image by adjustment scenery by wwhite balance control circuit like this, blue, green, red ratio just can be identical.That is to say that blank level adjustment just changes the amplification that normal proportionate relationship weakens blue circuit so if filled enamel by the white of adjustment inclined to one side one, increase green and red ratio simultaneously, making become image is still white.According to this principle and standard sRGB color space, can design a kind of novel white balance test test card, and the white balance method of testing is provided.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of video camera white balance chart that is applicable to all kinds of security monitoring video cameras and ordinary digital camera.
The technical scheme that the utility model is taked for the technical problem existed in the solution known technology is:
Video camera white balance chart of the present utility model, comprise three different standard color cards, be respectively red card, green card and carte blue, every standard color card consists of substrate layer, color layer and dope layer respectively, color layer is printed on substrate layer, and outside color layer the coating composition layer, color layer on every standard color card all is equally divided into two the different color area in left and right, red card is divided into red area and white portion, green card is divided into green area and white portion, and carte blue is divided into blue region and white portion.
The utility model can also adopt following technical measures:
On described red card, the rgb value of each color is respectively red 175, green 70, blue 56, white 243; On green card, the rgb value of each color is respectively red 154, green 148, blue 61, white 243; On carte blue, the rgb value of each color is respectively red 60, green 73, blue 150, white 242.
Advantage and the good effect that the utlity model has are:
In video camera white balance chart of the present utility model, red, green, blue and white are the standard testing colors that data analysis configures through many experiments, when the colour temperature of regulating lamp box changes, tested video camera can obtain obviously contrast effect intuitively to the reducing power of these three kinds of standard color cards, thereby can provide thinking for regulating white balance circuit, and embody the quality of video camera to each color rendition.The material that substrate layer is used of this standard color card itself is not easy to damage, and the upper surface of color layer scribbles special coating, can reduce the reflection measurement error as far as possible, and stronger oxidation resistance is arranged, but should be noted in use prevent stained.
The accompanying drawing explanation
Fig. 1 is the floor map of red card in video camera white balance chart of the present utility model;
Fig. 2 is the schematic cross-section of red card in video camera white balance chart of the present utility model.
Embodiment
Referring to drawings and Examples, the utility model is described in detail.
Fig. 1 is the floor map of red card in video camera white balance chart of the present utility model;
Fig. 2 is the schematic cross-section of red card in video camera white balance chart of the present utility model.
As depicted in figs. 1 and 2, video camera white balance chart of the present utility model, comprise three different standard color cards, be respectively red card, green card and carte blue, every standard color card consists of substrate layer 1, color layer 3 and dope layer 2 respectively, color layer is printed on substrate layer, and outside color layer the coating composition layer, color layer on every standard color card all is equally divided into two the different color area in left and right, red card is divided into red area 4 and white portion 5, green card is divided into green area and white portion, and carte blue is divided into blue region and white portion.Only shown the structure of red card in figure, green card is identical with red card with the structure of carte blue, only has the color difference.
On red card, the rgb value of each color is respectively red 175, green 70, blue 56, white 243; On green card, the rgb value of each color is respectively red 154, green 148, blue 61, white 243; On carte blue, the rgb value of each color is respectively red 60, green 73, blue 150, white 242.
Video camera white balance chart environment for use of the present utility model is darkroom, by video camera, adjustable color temperature lamp box words spoken by an actor from offstage balance test card is taken, and draws the effect of pictures taken and carries out interpretation of result.
In video camera white balance chart of the present utility model, red, green, blue and white are the standard testing colors that data analysis configures through many experiments, when the colour temperature of regulating lamp box changes, tested video camera can obtain obviously contrast effect intuitively to the reducing power of these three kinds of standard color cards, thereby can provide thinking for regulating white balance circuit, and embody the quality of video camera to each color rendition.The material that substrate layer is used of this standard color card itself is not easy to damage, and the upper surface of color layer scribbles special coating, can reduce the reflection measurement error as far as possible, and stronger oxidation resistance is arranged, but should be noted in use prevent stained.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model with preferred embodiment openly as above, yet, not in order to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (2)
1. a video camera white balance chart, it is characterized in that: comprise three different standard color cards, be respectively red card, green card and carte blue, every standard color card consists of substrate layer, color layer and dope layer respectively, color layer is printed on substrate layer, and outside color layer the coating composition layer, color layer on every standard color card all is equally divided into two the different color area in left and right, red card is divided into red area and white portion, green card is divided into green area and white portion, and carte blue is divided into blue region and white portion.
2. video camera white balance chart according to claim 1 is characterized in that: on red card, the rgb value of each color is respectively red 175, green 70, blue 56, white 243; On green card, the rgb value of each color is respectively red 154, green 148, blue 61, white 243; On carte blue, the rgb value of each color is respectively red 60, green 73, blue 150, white 242.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320394931 CN203368604U (en) | 2013-07-04 | 2013-07-04 | Camera white balance testing cards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320394931 CN203368604U (en) | 2013-07-04 | 2013-07-04 | Camera white balance testing cards |
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| CN203368604U true CN203368604U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320394931 Expired - Fee Related CN203368604U (en) | 2013-07-04 | 2013-07-04 | Camera white balance testing cards |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105681555A (en) * | 2016-01-13 | 2016-06-15 | 广东欧珀移动通信有限公司 | Color temperature debugging device and method and mobile terminal |
| CN105959680A (en) * | 2016-04-29 | 2016-09-21 | 北京牡丹视源电子有限责任公司 | Method and system for evaluating color revivification degree of network camera |
| CN110740306A (en) * | 2019-10-24 | 2020-01-31 | 深圳市视特易智能科技有限公司 | White balance statistical correction template and method for color camera |
-
2013
- 2013-07-04 CN CN 201320394931 patent/CN203368604U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105681555A (en) * | 2016-01-13 | 2016-06-15 | 广东欧珀移动通信有限公司 | Color temperature debugging device and method and mobile terminal |
| CN105681555B (en) * | 2016-01-13 | 2019-02-12 | Oppo广东移动通信有限公司 | Colour temperature debugging apparatus and method, mobile terminal |
| CN105959680A (en) * | 2016-04-29 | 2016-09-21 | 北京牡丹视源电子有限责任公司 | Method and system for evaluating color revivification degree of network camera |
| CN105959680B (en) * | 2016-04-29 | 2018-12-25 | 北京牡丹视源电子有限责任公司 | A kind of method and system for evaluating and testing web camera color rendition degree |
| CN110740306A (en) * | 2019-10-24 | 2020-01-31 | 深圳市视特易智能科技有限公司 | White balance statistical correction template and method for color camera |
| CN110740306B (en) * | 2019-10-24 | 2021-05-11 | 深圳市视特易智能科技有限公司 | Color white balance statistical correction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20170704 |