CN1917559A - Digital zooming device and method - Google Patents
Digital zooming device and method Download PDFInfo
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- CN1917559A CN1917559A CN 200510092096 CN200510092096A CN1917559A CN 1917559 A CN1917559 A CN 1917559A CN 200510092096 CN200510092096 CN 200510092096 CN 200510092096 A CN200510092096 A CN 200510092096A CN 1917559 A CN1917559 A CN 1917559A
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Abstract
The apparatus is used to resize an image sensed by a sensor and comprises: a scaling module, a firs image process module, a memory and a second image processing module. The scaling module receives a sensed image, resizes the sensed image according to a zoom scaling factor and generates a resized image. The first image processing module is connected to the scaling module, and according to a first preset condition and a second preset condition processes the image to generate a first image. The memory is connected to the first image process module and is used to save the first image. The second image processing module is connected to the memory and is used to receive the first image, and according to a second preset condition to generate a second image.
Description
Technical field
The present invention is meant the digital zooming device that carries out adjusted size in order to the sensed image that a transducer is detected especially about a kind of digital zooming device.
Background technology
Generally speaking, digital camera or analogue camera are when taking a picture, need will be to be caught the scene zone of photographing of waiting feed back to the user, traditionally, this program utilizes a built-in that is called optical finder to be finished, and this view finder is that an optical window is to allow user's scene watching also accurately see the scene zone of soon being caught via camera's lens system.In order to change the zone of soon being caught via camera's lens system, many digital cameras and analogue camera also comprise the zoom feature that is commonly called as, this zoom feature is confined to optical zoom in analogue camera, but in digital camera, then can comprise optical zoom and digital zoom both.
The zoom lens (Zoom Lens) that carries out optical zoom in traditional analogue camera comprises with the manual mode zoom and utilizes mechanical system to carry out autozoom, manually zoom promptly is with manual rotating lens, the mode that camera lens is stretched out forward or shrink back is backward focused, autozoom generally then is in the other drive unit that adds of camera lens, motor for example, utilize drive unit to drive camera lens and move with this and change focal length between camera lens, more than both all are via changing the focal length that position between camera lens changes analogue camera.
And general digital camera is when carrying out digital zoom, main by image sensing module original image being shown earlier, and view data is deposited in the memory, the image that carries out numeral by graphics processing unit amplifies and dwindles processing again, to reach the function of digital zoom.In the design of hardware, usually need to consider suitable memory size, if all store into whole input pictures in the memory, use too much storage space easily, relatively, because the memory that uses is big more, and the hardware cost of cost also can increase relatively, but if the capacity of memory is too little, then can make the storage space deficiency, just must first segmentation deposit in, amplify simultaneously by graphics processing unit again and export by the original image that image sensing module sensed, when the processing speed of graphics processing unit deposits the speed of memory in less than image segmentation, the risk that then might the generating unit sub image data runs off.
Therefore main purpose of the present invention is to provide a kind of digital zooming device, to overcome the problems referred to above.
Summary of the invention
The object of the present invention is to provide a kind of digital zooming device, can the sensed image that transducer detected be carried out adjusted size according to zoom ratio, the setting size of output image and the maximum image memory capacity of memory module of user's setting.
According to digital zooming device of the present invention, carry out adjusted size in order to the sensed image that a transducer is detected, digital zooming device comprises an adjusting module, one first image processing module, a memory module and one second image processing module.Adjusting module is connected to transducer, and adjusting module receives sensed image and adjusts sensed image according to a zoom ratio, adjusts image to produce one.First image processing module is connected to adjusting module, and first image processing module is handled the adjustment image according to one first predetermined condition and one second predetermined condition, to produce one first image.Memory module is connected to first image processing module, and memory module is in order to store first image.Second image processing module is connected to memory module, and second processing module is in order to receiving first image, and handles first image according to second predetermined condition, to produce one second image.
Digital zooming device of the present invention is before being stored in image in the memory module, promptly consider a maximum image memory capacity of memory module and a setting size of second image simultaneously, can reduce the storage space of required use via this method, and do not have in the prior art, because when the processing speed of graphics processing unit deposits the speed of memory in less than image segmentation, cause the parts of images data to run off, and the problem that generation is used, relatively, digital zooming device of the present invention can effectively reduce the storage space of use, and can solve the problem that view data is lost, therefore can effectively reduce the required cost that expends.
Can be further understood via the following detailed description and accompanying drawings about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 is the system block diagrams of digital zooming device of the present invention.
Fig. 2 is the flow chart of steps of digital zooming device of the present invention.
Fig. 3 produces the flow chart of steps of first image for digital zooming device of the present invention.
The main element symbol description
10: digital zooming device 12: transducer
14: 16: one first image processing modules of adjusting module
18: 20: one second image processing modules of memory module
22: input module 24: comparing unit
26: output module
Embodiment
See also Fig. 1, Fig. 1 is the system block diagrams of digital zooming device 10 of the present invention.As shown in Figure 1, main purpose of the present invention is to provide a kind of digital zooming device 10, carry out adjusted size in order to the sensed image that a transducer 12 is detected, digital zooming device 10 comprises an adjusting module 14, one first image processing module 16, a memory module 18 and one second image processing module 20.
Adjusting module 14 is connected to transducer 12, and adjusting module 14 receives sensed image, and adjusts sensed image according to a zoom ratio, adjusts image to produce one.
First image processing module 16 is connected to adjusting module 14, the first image processing modules 16 and handles the adjustment image according to one first predetermined condition and one second predetermined condition, to produce one first image.In an embodiment, first predetermined condition is the maximum image memory capacity of memory module 18, and second predetermined condition is a setting size of second image.First image processing module 16 also comprises a comparing unit 24, comparing unit 24 is in order to compare first predetermined condition and second predetermined condition, when first predetermined condition during more than or equal to second predetermined condition, for example: the maximum image memory capacity of memory module is during more than or equal to the required capacity of the second image setting size, first image processing module 16 is handled according to second predetermined condition and is adjusted image, to produce first image, and when first predetermined condition during less than second predetermined condition, for example: the maximum image memory capacity of memory module is during less than the required capacity of the second image setting size, first image processing module 16 is handled according to first predetermined condition and is adjusted image, to produce first image.
Memory module 18 is connected to first image processing module 16, in order to store first image.Second image processing module 20 is connected to memory module 18, in order to receiving first image, and handles first image according to second predetermined condition, to produce one second image.Digital zooming device 10 also comprises an output module 26, and output module 26 is connected to second image processing module 20, in order to export second image.
Digital zooming device 10 also comprises an input module 22, and input module 22 is connected to first image processing module 16 and second image processing module 20, and input module 22 is in order to the input zoom ratio and second predetermined condition.
In another embodiment, digital zooming device 10 also comprises one and selects the module (not shown), select module to store a plurality of multiplier value and a plurality of condition value in advance, select module to be connected to first image processing module 16 and second image processing module 20, select module in order to allow a user in a plurality of multiplier value and a plurality of condition value, select the zoom ratio and second predetermined condition.
Below illustrate the sensed image how digital zoom module of the present invention 10 detected a transducer 12 and carry out adjusted size, if the free space of memory module 18 can only be stored the image of 800*600 pixel, and original input picture size is the 1600*1200 pixel, the user carries out 4/3 times of zoom ratio and carries out zoom, and the setting of setting second image of final output is of a size of the 1280*960 pixel, adjusting module 14 just can be adjusted into sensed image the 1200*900 pixel earlier and (take out central part, length and width are all original 3/4), this is adjusts the size of images size, then first image processing module 16 can be adjusted into the 800*600 pixel with the image size earlier, to produce first image, and first image is stored in the memory module 18, and the size of first image is the 800*600 pixel at this moment, and the free space that is memory module 18 can be stored the size of 800*600 pixel.Then when output image, first image of memory module 18 being stored by second image processing module is adjusted into the 1280*960 pixel again, to produce second image, can realize that so the user is in previous effect of wishing to be of a size of in the setting of final output second image of 1280*960 pixel size.
And in another embodiment, if the free space of memory module can only be stored the image of 800*600 pixel, and original input picture size is the 1600*1200 pixel, the user carries out 4/3 times of zoom ratio and carries out zoom, if the desired final image of user is when setting second image pixel of size 640*480 pixel size, then first image processing module can be with direct adjustment image with 1200*900 Pixel Dimensions size, be adjusted into the size of 640*480 pixel, producing first image, and first image is stored in the memory module 18.When output image, first image of directly memory module 18 being stored by second image processing module is adjusted into the output of second image again, can realize that the user is in previous effect of wishing to be of a size of in the setting of final output second image of 640*480 pixel size.
See also Fig. 2, Fig. 2 is the flow chart of steps of digital zooming device of the present invention.As shown in Figure 2, the present invention is a kind of digital zoom method, carries out adjusted size in order to the sensed image that a transducer is detected, and the digital zoom method comprises the following step:
S50: receive sensed image, and adjust sensed image, adjust image to produce one according to a zoom ratio;
S52: handle this adjustment image according to one first predetermined condition and one second predetermined condition, to produce one first image;
Wherein, first predetermined condition is a maximum image memory capacity of a memory module, and second predetermined condition is a setting size of second image.In an embodiment, the digital zoom method is selected the zoom ratio and second predetermined condition in a plurality of multiplier value and a plurality of condition value of storage in advance.And in another embodiment, the digital zoom method then comprises the input zoom ratio and second predetermined condition.
S54: store first image;
S56: handle first image according to second predetermined condition, to produce one second image; And
S58: export second image.
See also Fig. 3, Fig. 3 produces the flow chart of steps of first image for digital zooming device of the present invention.As shown in Figure 3, wherein step S52 also comprises the following step:
S522: compare first predetermined condition and second predetermined condition;
S524:, handle according to second predetermined condition and to adjust image, to produce first image if first predetermined condition is during more than or equal to second predetermined condition; And
S526:, handle according to first predetermined condition and to adjust image, to produce first image if first predetermined condition is during less than second predetermined condition.
Though digital zooming device of the present invention may produce the distortion (Aliasing) of image in the process of image adjustment, that is may interfere with each other by the HFS of image and produce the phenomenon of distortion, but can preferably dwindle algorithm (for example: possess preferred low-pass filtering function) via using, reduce the influence of image fault, so can save storage space, in an embodiment, can receive under the picture quality that is subjected to, the minimum zoom ratio of image is made as 1/2, so, required storage space is about original 1/4.Digital zooming device of the present invention is when adjusting sensed image, promptly consider the maximum image memory capacity of memory module and the setting size of second image simultaneously, so can effectively reduce memory size, more can reduce image segmentation and deposit the risk that data that memory brings run off in, also can keep picture quality in acceptable scope, such design when available storage space is not enough, the also generation that can deal with problems.
Via the detailed description of above preferred specific embodiment, hope can be known description feature of the present invention and spirit more, and is not to come category of the present invention is limited with above-mentioned disclosed preferred specific embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and equivalence institute of the present invention desire application.
Claims (14)
1, a kind of digital zooming device carries out adjusted size in order to the sensed image that a transducer is detected, and this digital zooming device comprises:
One adjusting module, this adjusting module is connected to this transducer, and this adjusting module receives this sensed image, and adjusts this sensed image according to a zoom ratio, adjusts image to produce one;
One first image processing module, this first image processing module is connected to this adjusting module, and this first image processing module is handled this adjustment image according to one first predetermined condition and one second predetermined condition, to produce one first image;
One memory module, this memory module are connected to this first image processing module, in order to store this first image; And
One second image processing module, this second image processing module is connected to this memory module, in order to receiving this first image, and handles this first image according to this second predetermined condition, to produce one second image.
2, device as claimed in claim 1, wherein this first predetermined condition maximum image memory capacity that is this memory module.
3, device as claimed in claim 1, wherein this second predetermined condition is that one of this second image is set size.
4, device as claimed in claim 1, wherein this first image processing module also comprises a comparing unit, this comparing unit is in order to relatively this first predetermined condition and this second predetermined condition, when this first predetermined condition during more than or equal to this second predetermined condition, this first image processing module is handled this adjustment image according to this second predetermined condition, to produce this first image, and when this first predetermined condition during less than this second predetermined condition, this first image processing module is handled this adjustment image according to this first predetermined condition, to produce this first image.
5, device as claimed in claim 1, wherein this device also comprises an input module, and this input module is connected to this first image processing module and this second image processing module, and this input module is in order to import this zoom ratio and this second predetermined condition.
6, device as claimed in claim 1, this device also comprises one and selects module, this selection module is stored a plurality of multiplier value and a plurality of condition value in advance, this selection module is connected to this first image processing module and this second image processing module, and this selection module is in order to allow a user select this zoom ratio and this second predetermined condition in these a plurality of multiplier value and this a plurality of condition values.
7, device as claimed in claim 1, wherein this device also comprises an output module, and this output module is connected to this second image processing module, in order to export this second image.
8, a kind of digital zoom method is carried out adjusted size in order to the sensed image that a transducer is detected, and this digital zoom method comprises the following step:
(a) receive this sensed image, and adjust this sensed image, adjust image to produce one according to a zoom ratio;
(b) handle this adjustment image according to one first predetermined condition and one second predetermined condition, to produce one first image;
(c) store this first image; And
(d) handle this first image according to this second predetermined condition, to produce one second image.
9, method as claimed in claim 8, wherein this first predetermined condition is a maximum image memory capacity of a memory module.
10, method as claimed in claim 8, wherein this second predetermined condition is that one of this second image is set size.
11, method as claimed in claim 8, wherein this method also comprises in a plurality of multiplier value and a plurality of condition value of storage in advance, selects this zoom ratio and this second predetermined condition.
12, method as claimed in claim 8, wherein step (b) also comprises:
(b1) relatively this first predetermined condition and this second predetermined condition;
(b2) if this first predetermined condition during more than or equal to this second predetermined condition, is handled this adjustment image according to this second predetermined condition, to produce this first image; And
(b3) if this first predetermined condition during less than this second predetermined condition, is handled this adjustment image according to this first predetermined condition, to produce this first image.
13, method as claimed in claim 8, wherein this method also comprises this zoom ratio of input and this second predetermined condition.
14, method as claimed in claim 8, wherein this method also comprises:
(e) export this second image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510092096 CN1917559A (en) | 2005-08-18 | 2005-08-18 | Digital zooming device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510092096 CN1917559A (en) | 2005-08-18 | 2005-08-18 | Digital zooming device and method |
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| Publication Number | Publication Date |
|---|---|
| CN1917559A true CN1917559A (en) | 2007-02-21 |
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| CN 200510092096 Pending CN1917559A (en) | 2005-08-18 | 2005-08-18 | Digital zooming device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621622A (en) * | 2008-06-30 | 2010-01-06 | 索尼株式会社 | Super-resolution digital zoom |
| CN113037988A (en) * | 2019-12-09 | 2021-06-25 | Oppo广东移动通信有限公司 | Zoom method, electronic device, and computer-readable storage medium |
-
2005
- 2005-08-18 CN CN 200510092096 patent/CN1917559A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621622A (en) * | 2008-06-30 | 2010-01-06 | 索尼株式会社 | Super-resolution digital zoom |
| CN113037988A (en) * | 2019-12-09 | 2021-06-25 | Oppo广东移动通信有限公司 | Zoom method, electronic device, and computer-readable storage medium |
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