CN105376473A - Photographing method, device and equipment - Google Patents
Photographing method, device and equipment Download PDFInfo
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- CN105376473A CN105376473A CN201410422577.1A CN201410422577A CN105376473A CN 105376473 A CN105376473 A CN 105376473A CN 201410422577 A CN201410422577 A CN 201410422577A CN 105376473 A CN105376473 A CN 105376473A
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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
- H04N23/743—Bracketing, i.e. taking a series of images with varying exposure conditions
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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
- H04N23/741—Circuitry for compensating brightness variation in the scene by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors
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Abstract
The embodiment of the present invention provides a photographing method, a device and equipment. The method comprises a step of obtaining a first preview image and a second preview image obtained by executing preview operations under a first exposure level and a second exposure level respectively, executing a photographing operation under a third exposure level, and obtaining a snapshot image, a step of respectively adjusting the resolutions of the first preview image and the second preview image to be equal to the resolution of the snapshot image, and obtaining the first preview image and the second preview image with adjusted resolutions, and a step of generating a high dynamic range image according to the first preview image and the second preview image with the adjusted resolutions. According to the embodiment of the present invention, the photographing time required for taking a high dynamic range image is reduced.
Description
Technical field
The present invention relates to the field of taking pictures, particularly relate to a kind of photographic method, device and equipment.
Background technology
The dynamic range of numerical display device refers to the ratio of maximum exposure between the minimum exposure that can distinguish that equipment can be collected.High dynamic range imaging is used to realize more to expose completely than common numerical digit image technique a kind of technology of dynamic range.The contrast of human vision up to 1:10,000.Further, human eye can adapt to the ambient brightness of 6 grades automatically.In contrast, most digital pictures uses 24bit to store brightness and the color information of each pixel.The brightness range of about two grades can only be comprised like this.But in recent years, the development of Display Technique, makes contrast can reach about 1:1000, and the demand of people to the high dynamic range images closer to real world more and more highlights.
But the digital hdr technology of current main flow needs the low-dynamic range picture (ldr) of the different exposure value of more than use two frame, by synthesizing a frame hdr picture in conjunction with different exposure value pictorial information.The direct three frame pictures captured that use limit processing speed, make processing speed more than crawl three frame time.Deficiency in processing speed makes hdr technology be restricted on real-time such as video hdr, hdr take pictures the application such as preview.Therefore, a kind of processing speed hdr technology is faster needed.
Summary of the invention
In view of this, the object of the embodiment of the present invention is to provide a kind of photographic method, device and equipment, to reduce the photo opporunity needed for shooting high dynamic range images.
For solving the problems of the technologies described above, the embodiment of the present invention provides scheme as follows:
The embodiment of the present invention provides a kind of photographic method, for a photographing device, comprising:
When receiving user's photographing instruction, obtain under one first levels of exposure and one second levels of exposure, perform the first preview image and the second preview image that preview operation obtains respectively, further, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
According to described first preview image after described snapshot image and adjustment resolution and described second preview image, generate high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
Preferably, described respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image comprises:
According to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution;
According to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, be adjusted described second preview image after resolution.
Preferably, described first picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode, and described second picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode;
When described first picture up-sampling mode is Federated filter up-sampling mode, described according to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and comprise:
According to described snapshot image, described first preview image is carried out Federated filter up-sampling, obtain the first preview image after described adjustment resolution;
When described second picture up-sampling mode is Federated filter up-sampling mode, described according to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, be adjusted described second preview image after resolution and comprise:
According to described snapshot image, described second preview image is carried out Federated filter up-sampling, obtain the second preview image after described adjustment resolution.
Preferably, also comprise:
Under one first levels of exposure and one second levels of exposure, perform preview operation respectively, obtain described first preview image and described second preview image, and described first preview image and described second preview image are cached in a spatial cache;
Described acquisition performs the first preview image that preview operation obtains respectively under one first levels of exposure and one second levels of exposure and the second preview image comprises:
Described first preview image and described second preview image is extracted from described spatial cache.
Preferably, described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are respectively overexposure grade, under-exposure grade and normal exposure grade, described according to described first preview image after described snapshot image and adjustment resolution and described second preview image, generate high dynamic range images and comprise:
Extract the dark-state information in described first preview image and the under-exposure information in described second preview image;
According to described dark-state information, described under-exposure information and described snapshot image, synthesize a vertical frame dimension dynamic image.
The embodiment of the present invention also provides a kind of camera arrangement, for a photographing device, comprising:
Acquisition module, for when receiving user's photographing instruction, obtaining under one first levels of exposure and one second levels of exposure, performing the first preview image and the second preview image that preview operation obtains respectively, and, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Adjusting module, for respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
Generation module, for according to described first preview image after described snapshot image and adjustment resolution and described second preview image, generates high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
Preferably, described adjusting module comprises:
First adjustment unit, for according to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, is adjusted described first preview image after resolution;
Second adjustment unit, for according to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, is adjusted described second preview image after resolution.
Preferably, described first picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode, and described second picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode;
When described first picture up-sampling mode is Federated filter up-sampling mode, described first adjustment unit comprises:
First up-sampling subelement, for according to described snapshot image, carries out Federated filter up-sampling by described first preview image, obtains the first preview image after described adjustment resolution;
When described second picture up-sampling mode is Federated filter up-sampling mode, described second adjustment unit comprises:
Second up-sampling subelement, for according to described snapshot image, carries out Federated filter up-sampling by described second preview image, obtains the second preview image after described adjustment resolution.
Preferably, also comprise:
Previewing module, for performing preview operation respectively under one first levels of exposure and one second levels of exposure, obtain described first preview image and described second preview image, and described first preview image and described second preview image are cached in a spatial cache;
Described acquisition module comprises:
Extraction unit, for extracting described first preview image and described second preview image from described spatial cache.
Preferably, described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are respectively overexposure grade, under-exposure grade and normal exposure grade, and described generation module comprises:
Extract the dark-state information in described first preview image and the under-exposure information in described second preview image;
According to described dark-state information, described under-exposure information and described snapshot image, synthesize a vertical frame dimension dynamic image.
The embodiment of the present invention also provides a kind of photographing device, comprises a camera arrangement, and described camera arrangement is used for:
When receiving user's photographing instruction, obtain under one first levels of exposure and one second levels of exposure, perform the first preview image and the second preview image that preview operation obtains respectively, further, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
According to described first preview image after described snapshot image and adjustment resolution and described second preview image, generate high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
As can be seen from the above, the embodiment of the present invention at least has following beneficial effect:
By heightening the resolution of preview image, thus only needing shooting one vertical frame dimension image in different resolution just can obtain high dynamic range images, and needing in prior art compared with shooting three two field picture, to save two frame photo opporunities.
Accompanying drawing explanation
Fig. 1 represents the flow chart of steps of a kind of photographic method that the embodiment of the present invention provides;
Fig. 2 represents that three frame preview exposures of the better embodiment of the embodiment of the present invention arrange schematic diagram;
Fig. 3 represents the flow chart of the EM equipment moduleization operation corresponding with Fig. 2 of the better embodiment of the embodiment of the present invention;
Fig. 4 represents the modularization flow chart of the synthesis hdr picture of the better embodiment of the embodiment of the present invention;
Fig. 5 A represents that the one of the up-sampling preview picture of the better embodiment of the embodiment of the present invention realizes;
Fig. 5 B represents that the another kind of the up-sampling preview picture of the better embodiment of the embodiment of the present invention realizes;
Fig. 6 represents the structured flowchart of a kind of camera arrangement that the embodiment of the present invention provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawings and the specific embodiments the embodiment of the present invention is described in detail.
Fig. 1 represents the flow chart of steps of a kind of photographic method that the embodiment of the present invention provides, and with reference to Fig. 1, the embodiment of the present invention provides a kind of photographic method, comprises the steps:
Step 101, when receiving user's photographing instruction, obtaining under one first levels of exposure and one second levels of exposure, performing the first preview image and the second preview image that preview operation obtains respectively, and, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Step 102, respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
Step 103, according to described first preview image after described snapshot image and adjustment resolution and described second preview image, generates high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
Described photographic method is used for a photographing device.
Visible, by heightening the resolution of preview image, thus only needing shooting one vertical frame dimension image in different resolution just can obtain high dynamic range images, and needing in prior art compared with shooting three two field picture, to save two frame photo opporunities.
Wherein, the resolution of preview image can lower than the resolution of snapshot image.
Described first levels of exposure, described second levels of exposure and described 3rd levels of exposure can be overexposure grade, under-exposure grade and normal exposure grade respectively, described according to described first preview image after described snapshot image and adjustment resolution and described second preview image, generating high dynamic range images can comprise:
Extract the dark-state information in described first preview image and the under-exposure information in described second preview image;
According to described dark-state information, described under-exposure information and described snapshot image, synthesize a vertical frame dimension dynamic image.
In the embodiment of the present invention, described respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image can comprise:
According to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution;
According to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, be adjusted described second preview image after resolution.
Wherein, described first picture up-sampling mode can be Federated filter up-sampling mode or hardware up-sampling mode, and described second picture up-sampling mode can be Federated filter up-sampling mode or hardware up-sampling mode;
When described first picture up-sampling mode is Federated filter up-sampling mode, described according to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, being adjusted described first preview image after resolution can comprise:
According to described snapshot image, described first preview image is carried out Federated filter up-sampling, obtain the first preview image after described adjustment resolution;
When described second picture up-sampling mode is Federated filter up-sampling mode, described according to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, being adjusted described second preview image after resolution can comprise:
According to described snapshot image, described second preview image is carried out Federated filter up-sampling, obtain the second preview image after described adjustment resolution.
In the embodiment of the present invention, can also comprise:
Under one first levels of exposure and one second levels of exposure, perform preview operation respectively, obtain described first preview image and described second preview image, and described first preview image and described second preview image are cached in a spatial cache;
Described acquisition performs the first preview image that preview operation obtains respectively under one first levels of exposure and one second levels of exposure and the second preview image comprises:
Described first preview image and described second preview image is extracted from described spatial cache.
For the embodiment of the present invention being set forth clearly clear, provide the better embodiment of the embodiment of the present invention below.
This better embodiment provides a kind of quick high dynamic range (hdr) newly to take pictures realization, utilizes two frame pre-review informations to carry out up-sampling interpolation and frame information of taking pictures synthesizes hdr photo.Compared with taking pictures with traditional hdr, the program saves two frame photo opporunities.
The low resolution pre-review information that this better embodiment proposes difference to expose synthesizes the technology of hdr picture by up-sampling and high-resolution information of taking pictures.
This better embodiment relates to (but being not limited to) digital filming product, particularly mobile phone camerahdr shooting technology and picture of mobile telephone up-sampling interpolation technique.
By the technology of picture up-sampling to be high-definition picture by low-resolution image interpolation be a kind of comparative maturity.As used bilinearity, Tri linear interpolation, or use the Federated filter Sampling techniques of close image information interpolation.
Fig. 2 represents that three frame preview exposures of the better embodiment of the embodiment of the present invention arrange schematic diagram, with reference to Fig. 2, levels of exposure different in hdr screening-mode is set, it is three frames that preview (preview) exposes form, wherein a frame is normal exposure, the different exposure parameter of other two frames exposes, and obtains the preview image that overexposure and owing exposes to the sun under pattern.
Fig. 3 represents the flow chart of the EM equipment moduleization operation corresponding with Fig. 2 of the better embodiment of the embodiment of the present invention, as shown in Figure 3, in hdr photograph taking whole process, overexposure and under exposed preview image pass through up-sampling, the image of the image formed objects obtained and take in normal exposure, then from three obtained two field pictures, extract dark-state information in overexposure picture, extraction is owed to expose to the sun under-exposure information in image, then with normal exposure Images uniting one frame hdr image.
Be illustrated in figure 4 hdr photo building-up process, visible, this better embodiment can well with main flow numeral hdr hardware compatibility, only need add the process of preview up-sampling, the image obtained directly can be delivered to common hdr processing module and carry out hdr Images uniting.
As Fig. 5 A, Fig. 5 B are depicted as two kinds of realizations of up-sampling algorithm, be respectively with utilizing the Federated filter up-sampling algorithm of snapshot and hardware up-sampling scheme to carry out preview interpolation.
This better embodiment as quick hdr camera application in exposal model, a kind of implementation is: when after the quick hdr pattern of startup, application layer receives shoot button order and after confirming that af information accurately, message is passed to hdr module, preview starts hdr form as shown in Figure 2, namely frame difference of counting respectively exposure, by the Lv2 (level2 of gained, levels of exposure 2) and Lv-2 (level-2, levels of exposure-2) preview image to carry out liter sampling after and normal exposure (Lv0, level0, levels of exposure 0) under snapshot image deliver to hdr processing module together, obtain a frame hdr image to carry out showing and preserving, flow process as shown in Figure 3.
This better embodiment is applicable to: be large image in different resolution by the picture up-sampling of small in resolution, carries out the technology of multiframe synthesis hdr image; Use the hdr technology of pre-review information up-sampling as hdr input picture of photographic images; And, under different exposure, use up-sampling preview picture to input the technology of carrying out hdr synthesis as hdr with picture of taking pictures.
Fig. 6 represents the structured flowchart of a kind of camera arrangement that the embodiment of the present invention provides, and with reference to Fig. 6, the embodiment of the present invention provides a kind of camera arrangement, comprising:
Acquisition module 601, for when receiving user's photographing instruction, obtaining under one first levels of exposure and one second levels of exposure, performing the first preview image and the second preview image that preview operation obtains respectively, and, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Adjusting module 602, for respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
Generation module 603, for according to described first preview image after described snapshot image and adjustment resolution and described second preview image, generates high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
Described camera arrangement is used for a photographing device.
Visible, by heightening the resolution of preview image, thus only needing shooting one vertical frame dimension image in different resolution just can obtain high dynamic range images, and needing in prior art compared with shooting three two field picture, to save two frame photo opporunities.
Wherein, described adjusting module 602 can comprise:
First adjustment unit, for according to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, is adjusted described first preview image after resolution;
Second adjustment unit, for according to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, is adjusted described second preview image after resolution.
Wherein, described first picture up-sampling mode can be Federated filter up-sampling mode or hardware up-sampling mode, and described second picture up-sampling mode can be Federated filter up-sampling mode or hardware up-sampling mode;
When described first picture up-sampling mode is Federated filter up-sampling mode, described first adjustment unit can comprise:
First up-sampling subelement, for according to described snapshot image, carries out Federated filter up-sampling by described first preview image, obtains the first preview image after described adjustment resolution;
When described second picture up-sampling mode is Federated filter up-sampling mode, described second adjustment unit can comprise:
Second up-sampling subelement, for according to described snapshot image, carries out Federated filter up-sampling by described second preview image, obtains the second preview image after described adjustment resolution.
In the embodiment of the present invention, can also comprise:
Previewing module, for performing preview operation respectively under one first levels of exposure and one second levels of exposure, obtain described first preview image and described second preview image, and described first preview image and described second preview image are cached in a spatial cache;
Described acquisition module 601 comprises:
Extraction unit, for extracting described first preview image and described second preview image from described spatial cache.
In addition, described first levels of exposure, described second levels of exposure and described 3rd levels of exposure can be overexposure grade, under-exposure grade and normal exposure grade respectively, and described generation module 603 can comprise:
Extract the dark-state information in described first preview image and the under-exposure information in described second preview image;
According to described dark-state information, described under-exposure information and described snapshot image, synthesize a vertical frame dimension dynamic image.
The embodiment of the present invention also provides a kind of photographing device, and described photographing device comprises a camera arrangement, and described camera arrangement is used for:
When receiving user's photographing instruction, obtain under one first levels of exposure and one second levels of exposure, perform the first preview image and the second preview image that preview operation obtains respectively, further, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
According to described first preview image after described snapshot image and adjustment resolution and described second preview image, generate high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
The above is only the execution mode of the embodiment of the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from embodiment of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection range of the embodiment of the present invention.
Claims (11)
1. a photographic method, for a photographing device, is characterized in that, comprising:
When receiving user's photographing instruction, obtaining under the first levels of exposure and the second levels of exposure, performing the first preview image and the second preview image that preview operation obtains respectively, and, under the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
According to described first preview image after described snapshot image and adjustment resolution and described second preview image, generate high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
2. photographic method according to claim 1, it is characterized in that, described respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image comprises:
According to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution;
According to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, be adjusted described second preview image after resolution.
3. photographic method according to claim 2, it is characterized in that, described first picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode, and described second picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode;
When described first picture up-sampling mode is Federated filter up-sampling mode, described according to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and comprise:
According to described snapshot image, described first preview image is carried out Federated filter up-sampling, obtain the first preview image after described adjustment resolution;
When described second picture up-sampling mode is Federated filter up-sampling mode, described according to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, be adjusted described second preview image after resolution and comprise:
According to described snapshot image, described second preview image is carried out Federated filter up-sampling, obtain the second preview image after described adjustment resolution.
4. photographic method according to claim 1, is characterized in that, also comprises:
Under one first levels of exposure and one second levels of exposure, perform preview operation respectively, obtain described first preview image and described second preview image, and described first preview image and described second preview image are cached in a spatial cache;
Described acquisition performs the first preview image that preview operation obtains respectively under one first levels of exposure and one second levels of exposure and the second preview image comprises:
Described first preview image and described second preview image is extracted from described spatial cache.
5. photographic method according to claim 1, it is characterized in that, described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are respectively overexposure grade, under-exposure grade and normal exposure grade, described according to described first preview image after described snapshot image and adjustment resolution and described second preview image, generate high dynamic range images and comprise:
Extract the dark-state information in described first preview image and the under-exposure information in described second preview image;
According to described dark-state information, described under-exposure information and described snapshot image, synthesize a vertical frame dimension dynamic image.
6. a camera arrangement, for a photographing device, is characterized in that, comprising:
Acquisition module, for when receiving user's photographing instruction, obtaining under one first levels of exposure and one second levels of exposure, performing the first preview image and the second preview image that preview operation obtains respectively, and, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Adjusting module, for respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
Generation module, for according to described first preview image after described snapshot image and adjustment resolution and described second preview image, generates high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
7. camera arrangement according to claim 6, is characterized in that, described adjusting module comprises:
First adjustment unit, for according to the first picture up-sampling mode, by the resolution adjustment of described first preview image to equal with the resolution of described snapshot image, is adjusted described first preview image after resolution;
Second adjustment unit, for according to the second picture up-sampling mode, by the resolution adjustment of described second preview image to equal with the resolution of described snapshot image, is adjusted described second preview image after resolution.
8. camera arrangement according to claim 7, it is characterized in that, described first picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode, and described second picture up-sampling mode is Federated filter up-sampling mode or hardware up-sampling mode;
When described first picture up-sampling mode is Federated filter up-sampling mode, described first adjustment unit comprises:
First up-sampling subelement, for according to described snapshot image, carries out Federated filter up-sampling by described first preview image, obtains the first preview image after described adjustment resolution;
When described second picture up-sampling mode is Federated filter up-sampling mode, described second adjustment unit comprises:
Second up-sampling subelement, for according to described snapshot image, carries out Federated filter up-sampling by described second preview image, obtains the second preview image after described adjustment resolution.
9. camera arrangement according to claim 6, is characterized in that, also comprises:
Previewing module, for performing preview operation respectively under one first levels of exposure and one second levels of exposure, obtain described first preview image and described second preview image, and described first preview image and described second preview image are cached in a spatial cache;
Described acquisition module comprises:
Extraction unit, for extracting described first preview image and described second preview image from described spatial cache.
10. camera arrangement according to claim 6, is characterized in that, described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are respectively overexposure grade, under-exposure grade and normal exposure grade, and described generation module comprises:
Extract the dark-state information in described first preview image and the under-exposure information in described second preview image;
According to described dark-state information, described under-exposure information and described snapshot image, synthesize a vertical frame dimension dynamic image.
11. 1 kinds of photographing devices, is characterized in that, comprise a camera arrangement, and described camera arrangement is used for:
When receiving user's photographing instruction, obtain under one first levels of exposure and one second levels of exposure, perform the first preview image and the second preview image that preview operation obtains respectively, further, under one the 3rd levels of exposure, perform photographing operation, obtain a snapshot image;
Respectively by the resolution adjustment of described first preview image and described second preview image to equal with the resolution of described snapshot image, be adjusted described first preview image after resolution and described second preview image;
According to described first preview image after described snapshot image and adjustment resolution and described second preview image, generate high dynamic range images;
Wherein, the time interval performing preview operation and execution photographing operation under described first levels of exposure is not more than the first setting-up time interval, the time interval performing preview operation and execution photographing operation under described second levels of exposure is not more than the second setting-up time interval, and described first levels of exposure, described second levels of exposure and described 3rd levels of exposure are different.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410422577.1A CN105376473A (en) | 2014-08-25 | 2014-08-25 | Photographing method, device and equipment |
| PCT/CN2014/089234 WO2015117397A1 (en) | 2014-08-25 | 2014-10-23 | Picture-taking method, apparatus, and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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