CN102682438A - Method and imaging equipment for improving still-life shooting noise - Google Patents
Method and imaging equipment for improving still-life shooting noise Download PDFInfo
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- CN102682438A CN102682438A CN2011100652660A CN201110065266A CN102682438A CN 102682438 A CN102682438 A CN 102682438A CN 2011100652660 A CN2011100652660 A CN 2011100652660A CN 201110065266 A CN201110065266 A CN 201110065266A CN 102682438 A CN102682438 A CN 102682438A
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Abstract
The invention provides a method for improving the still-life shooting noise. The method is characterized by comprising the following steps: step 100, continually shooting the same scene picture of an external still life to obtain a plurality of images; step 200, processing the original pixel values of corresponding pixel points of the plurality of images to obtain the pixel value of the corresponding pixel point of a new image; and step 300, regulating the white balance and the contrast of the new image, compressing the new image, and outputting the processed image. The invention also provides imaging equipment for improving the still-life shooting noise, which is based on the above method and comprises an imaging unit, a memory unit, a pixel value processing unit and an image processing unit. According to the invention, the plurality of continually shot images of the same scene picture of the still life are processed to improve the still-life image noise, therefore, the image quality is improved.
Description
[technical field]
The invention belongs to image processing field, relate in particular to a kind of method and vision facilities that still life is taken noise that improve.
[background technology]
Adopt the camera-type vision facilities of CCD or cmos sensor; Because CCD or cmos sensor all have the problem of thermal stability; Make that the quality of imaging is relevant with temperature: if the temperature of camera raises; Noise signal can be strong excessively, will on picture, form variegated spot, i.e. noise in not due place.
In order to prevent to produce this image noise, be equipped with the function that is called as " noise reduction " in the part digital camera.If use decrease of noise functions, before document image, will utilize digital processing method to come the removal of images noise.But along with the unlatching of decrease of noise functions, picture detail can be lost.
Taking the still life image has characteristics, and promptly the still life image in the image is motionless, therefore if can utilize the mode of many image comparisons to handle, also can realize improving the effect of noise.
In view of this, the present invention provides a kind of method and vision facilities that still life is taken noise that improve, and utilizes this method and vision facilities, just can improve the noise of still life image, to improve the quality of picture.
[summary of the invention]
Fundamental purpose of the present invention is to provide a kind of method and vision facilities that still life is taken noise that improve, to improve the quality of picture.
The object of the present invention is to provide a kind of method that still life is taken noise of improving, it is characterized in that this method comprises:
Preferably, the processing of the original pixel value of the corresponding pixel points of above-mentioned many images being carried out comprises: get the original pixel value of the corresponding pixel points of above-mentioned many images, and calculate mean value according to said original pixel value.
Preferably, the processing of the original pixel value of the corresponding pixel points of above-mentioned many images being carried out comprises: get the original pixel value of the corresponding pixel points of above-mentioned many images, and calculate mode according to said original pixel value.
Preferably, said pixel value is gray-scale value or brightness value.
Another object of the present invention is to provide a kind of vision facilities that still life is taken noise that improves, this vision facilities is characterized in that based on said method this vision facilities comprises:
One image-generating unit is used for continuously the external world being taken the photograph the same camera lens picture imaging of still life, and the pixel value of the pixel of many images of become is exported;
One storage unit, it links to each other with said image-generating unit, said storage unit be used for writing down said image-generating unit output above-mentioned many images pixel pixel value and based on the pixel value of the said new images that obtains in the said method step 200;
One pixel value processing unit; It links to each other with said storage unit; Said pixel value processing unit is used to extract and handle the original pixel value of corresponding pixel points of above-mentioned many images of said storage unit; With the pixel value of the corresponding pixel points that obtains a new images, and deposit the pixel value of said new images in said storage unit;
One graphics processing unit, it links to each other with said storage unit, and said graphics processing unit is used for said new images is carried out white balance, contrast and processed compressed, and the image that will obtain after will handling output.
Preferably, said pixel value processing unit calculates mean value according to the original pixel value of the corresponding pixel points of above-mentioned many images that extract, with the pixel value as the corresponding pixel points of a new images.
Preferably, said pixel value processing unit calculates mode according to the original pixel value of the corresponding pixel points of above-mentioned many images that extract, with the pixel value as the corresponding pixel points of a new images.
Preferably, said pixel value is gray-scale value or brightness value.
Compared to prior art, the present invention handles through many images that the quilt that continuous shooting is obtained is taken the photograph the same camera lens picture of still life, just can improve the noise of still life image, thereby has improved the quality of image.
For making the object of the invention, structural attitude and function thereof there are further understanding, cooperate diagram to specify as follows now:
[description of drawings]
Fig. 1 is that the present invention improves the process flow diagram of a preferred embodiment that still life is taken the method for noise.
Fig. 2 is the process flow diagram of the detailed process step of the step 200 in the process flow diagram shown in Figure 1.
Fig. 3 is based on the block diagram of the vision facilities that improves still life shooting noise of method among Fig. 1.
[embodiment]
Seeing also Fig. 1, is that the present invention improves the process flow diagram that still life is taken method one preferred embodiment of noise, and this method comprises:
Still life is taken and is finished.
For step 200; If noise is normal distribution; Based on central limit theorem; Can use the mode of averaging to approach the actual value of image simply, promptly the original pixel value according to the corresponding pixel points of above-mentioned many images calculates mean value, with the pixel value as the corresponding pixel points of a new images; Distribute if noise is a skewness, can use the mode of asking mode to approach the actual value of image, promptly the original pixel value according to the corresponding pixel points of above-mentioned many images calculates the pixel value that mode is used as the corresponding pixel points of a new images.
See also Fig. 2, show the process flow diagram that mode that the usefulness of step 200 averages is improved noise, in present embodiment, suppose that many captured images all have m pixel, step 200 specifically comprises:
The end of averaging.
In addition, if conditions permit, promptly when the original image that obtains is abundant, can consider use mode, this can be avoided because the left avertence of statistical graph or right avertence cause the error that when calculating mean value, produces, thereby acquisition is than the better precision of mean value method.
See also Fig. 3; Show the block diagram that still life is taken the vision facilities of noise of improving based on method among Fig. 1; This vision facilities comprises: image-generating unit 10, storage unit 20, pixel value processing unit 30, graphics processing unit 40; Wherein, image-generating unit 10 comprises the camera lens 11 and sensor 12 that is connected, and sensor 12, pixel value processing unit 30, graphics processing unit 40 all link to each other with storage unit 20.
Image-generating unit 10 is used for continuously the external world being taken the photograph the same camera lens picture imaging of still life, and exports the pixel value of the pixel of many images of become to storage unit 20.
Pixel value processing unit 30 is used to extract and handle the original pixel value of corresponding pixel points of many images of storage unit 20, with the pixel value of the corresponding pixel points that obtains a new images, and deposits the pixel value of new images in storage unit 20.
Wherein, pixel value processing unit 30 calculates mean value or calculates mode according to the original pixel value of the corresponding pixel points of many images that extract, with the pixel value as the corresponding pixel points of a new images.
When the present invention improved the vision facilities work of still life shooting noise, at first, the light focusing that still life is taken the photograph with the external world by camera lens 11 elder generations of image-generating unit 10 imaged in sensor 12; Then; 12 pairs of images that become of sensor carry out being recorded on the storage unit 20 after the handled, again, the original pixel value of the corresponding pixel points of many images of 30 extractions of pixel value processing unit and processing storage unit 20; Pixel value with the corresponding pixel points that obtains a new images; And deposit the pixel value of the corresponding pixel points of new images in storage unit 20, last, graphics processing unit 40 extracts the pixel value of above-mentioned new images from storage unit 20; Above-mentioned new images is carried out white balance, contrast and processed compressed, and the image that will obtain after will handling output.
Certainly, the embodiment that has described here is many preferred embodiments that utilize in the embodiments of the invention, and sets forth through the mode of explanation rather than restriction here.It will be apparent to one skilled in the art that it should be apparent that, do not break away from itself under the prerequisite of the spirit and scope of the invention that appended claims limits, can make many other embodiment.
Claims (7)
1. one kind is improved the method that still life is taken noise, it is characterized in that this method comprises:
Step 100, take extraneous still life continuously same camera lens picture to obtain many images;
Step 200, the original pixel value of the corresponding pixel points of above-mentioned many images is handled, with the pixel value of the corresponding pixel points that obtains a new images;
Step 300, above-mentioned new images is carried out white balance, contrast and processed compressed, and the image that will obtain after will handling output.
2. the method for improving still life shooting noise as claimed in claim 1; It is characterized in that: the processing that the original pixel value of the corresponding pixel points of above-mentioned many images is carried out comprises: get the original pixel value of the corresponding pixel points of above-mentioned many images, and calculate mean value according to said original pixel value.
3. the method for improving still life shooting noise as claimed in claim 1; It is characterized in that: the processing that the original pixel value of the corresponding pixel points of above-mentioned many images is carried out comprises: get the original pixel value of the corresponding pixel points of above-mentioned many images, and calculate mode according to said original pixel value.
4. the method for improving still life shooting noise as claimed in claim 1, it is characterized in that: said pixel value is gray-scale value or brightness value.
5. one kind is improved the vision facilities that still life is taken noise, and this vision facilities is characterized in that based on said method this vision facilities comprises:
One image-generating unit is used for continuously the external world being taken the photograph the same camera lens picture imaging of still life, and the pixel value of the pixel of many images of become is exported;
One storage unit, it links to each other with said image-generating unit, said storage unit be used for writing down said image-generating unit output above-mentioned many images pixel pixel value and based on the pixel value of the said new images that obtains in the said method step 200;
One pixel value processing unit; It links to each other with said storage unit; Said pixel value processing unit is used to extract and handle the original pixel value of corresponding pixel points of above-mentioned many images of said storage unit; With the pixel value of the corresponding pixel points that obtains a new images, and deposit the pixel value of said new images in said storage unit;
One graphics processing unit, it links to each other with said storage unit, and said graphics processing unit is used for said new images is carried out white balance, contrast and processed compressed, and the image that will obtain after will handling output.
6. the vision facilities that improves still life shooting noise as claimed in claim 5; It is characterized in that: said pixel value processing unit calculates mean value according to the original pixel value of the corresponding pixel points of above-mentioned many images that extract, with the pixel value as the corresponding pixel points of a new images.
7. the vision facilities that improves still life shooting noise as claimed in claim 5; It is characterized in that: said pixel value processing unit calculates mode according to the original pixel value of the corresponding pixel points of above-mentioned many images that extract, with the pixel value as the corresponding pixel points of a new images.
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| CN2011100652660A CN102682438A (en) | 2011-03-17 | 2011-03-17 | Method and imaging equipment for improving still-life shooting noise |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635575A (en) * | 2015-12-29 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Imaging method, imaging device and terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635575A (en) * | 2015-12-29 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Imaging method, imaging device and terminal |
| WO2017113917A1 (en) * | 2015-12-29 | 2017-07-06 | 宇龙计算机通信科技(深圳)有限公司 | Imaging method, imaging apparatus, and terminal |
| CN105635575B (en) * | 2015-12-29 | 2019-04-12 | 宇龙计算机通信科技(深圳)有限公司 | Imaging method, imaging device and terminal |
| US10880507B2 (en) | 2015-12-29 | 2020-12-29 | Yulong Computer Telecommunication Scientific (Shenzhen) Co., Ltd. | Imaging method and terminal for noise reduction |
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Application publication date: 20120919 |