CN104469087B - Electronic device and image display method - Google Patents
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- CN104469087B CN104469087B CN201310439489.8A CN201310439489A CN104469087B CN 104469087 B CN104469087 B CN 104469087B CN 201310439489 A CN201310439489 A CN 201310439489A CN 104469087 B CN104469087 B CN 104469087B
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Abstract
The present invention is a kind of electronic device and image display method.Electronic device includes mainly a sensing module, a signal processing module and a display module.The sensing module captures multiple first images with a first frequency or a period 1, or captures multiple second images with a second frequency or a second round.After the signal processing module receives such second image, operation is carried out to such second image, to export multiple third images.The display module then shows such first image or such third image.
Description
Technical field
The present invention is especially a kind of to be captured simultaneously with different frequency or period about a kind of electronic device and image display method
The electronic device and image display method of image output crossfire.
Background technology
With the development of science and technology fechtable and showing that the electronic device of image is very universal in daily life.Its
In, existing electronic device often utilizes the instant video crossfire that screen display is captured.
If however, the acquisition frequency of image to be improved, i.e., can make the time for exposure of every frame image relatively reduce.Such as
This, can cause the noise of image to become more, and reduce the display quality of video streaming.
Therefore, it is necessary to provide a kind of new electronic devices and image display method really, to solve lacking for prior art
It loses.
Invention content
The main object of the present invention can improve video streaming in a kind of electronic device of offer and image display method
Quality.
For the purpose for reaching above-mentioned, the present invention provides a kind of image display method, including：With a first frequency or one first
Period captures multiple first images, and shows such first image；With a second frequency or a second round, multiple the are captured
Two images；And multiple third images are calculated according to such second image, and show such third image.
Above-mentioned image display method, wherein such second image per specific frame number is summed into the such third shadow of a frame
Picture.
Above-mentioned image display method, after plurality of such second image is cumulative divided by a constant；Or multiple such
Two images mutually add up respectively divided by after the constant.
Above-mentioned image display method, the wherein constant are that one second gain of corresponding such second image divided by correspondence should
Deng the quotient of one first gain of the first image.
Above-mentioned image display method, wherein such third image is with the first frequency, the period 1, the second frequency
Or second round display.
Above-mentioned image display method, the wherein second frequency are integral multiple and/or period 1 of the first frequency
It is the integral multiple of the second round.
For the purpose for reaching above-mentioned, the present invention provides also a kind of electronic device, including：One sensing module, with one first frequency
Rate or a period 1 capture multiple first images, or capture multiple second images with a second frequency or a second round；One
Signal processing module receives such second image, and accordingly exports multiple third images；And a display module, display should
Deng the first image or such third image.
Above-mentioned electronic device, the wherein signal processing module add up such second image of adjacent particular frame, to become
The such third image of one frame.
Above-mentioned electronic device, wherein further including：The signal processing module adds up after multiple such second images, Chu Yiyi
Constant, or after making multiple such second images divided by the constant respectively, mutually add up；Wherein, which is equal to corresponding such second
One second gain of image divided by one first gain of corresponding such first image.
Above-mentioned electronic device, the wherein display module show such first image in a first state, or in one second
The such third image of status display.
Above-mentioned electronic device, wherein further include a camera lens module, the camera lens module in second state carry out zoom or
Focusing.
Above-mentioned electronic device, the wherein display module with the first frequency, the period 1, the second frequency or this
Two cycles show such third image.
Description of the drawings
Fig. 1 is the configuration diagram of the electronic device of one embodiment of the invention；
Fig. 2 is that the electronic device of one embodiment of the invention executes focusing curve graph when focusing flow；
Fig. 3 A are the schematic diagram of the formation third image of one embodiment of the invention；
Fig. 3 B are the schematic diagram of the formation third image of another embodiment of the present invention；
Fig. 4 is the step flow chart of the image display method of one embodiment of the invention.
Specific implementation mode
For allow the present invention above and other objects, features and advantages can be clearer and more comprehensible, it is cited below particularly go out the present invention
Specific embodiment, and coordinate appended attached drawing, it is described in detail below.
The electronic device of the present invention can have image acquisition function, including but not limited to portable mobile device, e.g.
Digital camera, digital code camera, drive recorder or personal mobile communication system ... etc..
Fig. 1 is the configuration diagram of the electronic device 1 of one embodiment of the invention.As shown in Figure 1, electronic device 1 is main
Including sensing module 20, display module 30, camera lens module 40 and signal processing module 50.
Sensing module 20 is electrically connected with signal processing module 50, can be treated and be taken the photograph the light beam progress photoelectricity turn that object is sent out
It changes, and exports corresponding image.Wherein, sensing module 20 may include a Charged Couple sensing element (Charge-coupled
Device, CCD) or a complementary metal oxide semiconductor（Complementary Metal-Oxide-
Semiconductor, CMOS）Sensing element, but the present invention is not limited thereto.
In an embodiment, sensing module 20 can capture multiple first images with a first frequency, such as with exposure x per second
The first frequency of frame captures the first image, then sequentially output includes the video streaming of the first image, i.e. the image string of the first image
Stream.At this point, it includes the video streaming of the first image that can enable the display of display module 30.Wherein, the video streaming of the first image can be with
It is to be sent to display module 30 via signal processing module 50.
On the other hand, in this present embodiment, sensing module 20 can capture multiple second images with a second frequency, such as
The second image is captured with the second frequency of exposure y frames per second, then sequentially output includes the video streaming of the second image, i.e. the second shadow
The video streaming of picture.At this point, signal processing module 50 can carry out operation to the second image, by the second video conversion at third shadow
Picture, and then generation includes the video streaming of third image, the i.e. video streaming of third image.Wherein, y can be the integral multiple of x,
E.g. y=4x.Specifically, it can be 120 that x, which can be 30, y, but not limited to this.
In another embodiment, sensing module 20 period 1 can also capture multiple first images, that is, with every frame
The period 1 of exposure m seconds captures the first image；Or multiple second images are captured with a second round, that is, with every exposed frame
N seconds second rounds captured the second image.Wherein, m can be the integral multiple of n, e.g. m=4n.Specifically, m
Can be 1/30, n can be 1/120, but not limited to this.
It should be noted that sensing module 20 captures the first image with the first frequency of x frames per second, every frame first can be equal to
Image exposure 1/x seconds captures the second image with the second frequency of y frames per second, can be equal to the second image exposure of every frame 1/y seconds.
Specifically, sensing module 20 can capture the first image with the frequency of 30 frame per second, and meet the first image exposure of every frame simultaneously
1/30 second, the second image captured with the frequency of 120 frame per second, and meet the second image exposure of every frame simultaneously 1/120 second.That is, x
=1/m and/or y=1/n, so the present invention is not limited thereto.
On the other hand, sensing module 20 can also reserve time with profit transmission before and after capturing per the first image of frame
Completed first image prepares to capture the first image of next frame, and therefore, sensing module 20 is picked with the first frequency of x frames per second
The first image is taken, the first image exposure of every frame can be not equal to 1/x seconds, the first image is captured with every frame m seconds period 1,
Also first image of fechtable 1/m frames per second can be not equal to.Similarly, sensing module 20 captures the with the second frequencies of y frames per second
Two images can be not equal to the second image exposure of every frame 1/y seconds, capture the second image with every frame n seconds second rounds, can not
It is equal to first image of fechtable 1/n frames per second.In an embodiment, it can be 120, m can be 1/ that x, which can be 30, y,
30, n can be 1/120, but not limiting the present invention.
It, can also be first to the first shadow before sensing module 20 exports the first image or the second image furthermore in an embodiment
Picture and the second image carry out the signal processings such as sensor gain (sensor gain).In this present embodiment, sensing module 20 is picked
The corresponding sensor of the second image that the corresponding sensor gain of the first image taken is captured by the first gain, sensing module 20
Gain is the second gain.When sensor gain is bigger, the first image that self-inductance measurement module 20 can be made to export and the second image it is bright
Degree is higher；Conversely, the brightness for the first image and the second image that then self-inductance measurement module 20 exports is lower.
Secondly, display module 30 can be electrically connected with signal processing module 50, and can show what sensing module 20 was exported
The video streaming of first image or third image.
In an embodiment, the first image and the second image that sensing module 20 is exported can be first via signal processing modules
50 carry out operation, then provide and give display module 30.Wherein, display module 30 can be a LCD screen, a touch panel or flexible
Property display, but be not limited thereto.
In addition, camera lens module 40 converges the light beam from object to be taken the photograph, light beam images in sensing module 20.It is specific and
Speech, camera lens module 40 include driver 41 and camera lens 42, and camera lens 42 includes Zoom lens (Zoom Lens)（It is not painted）And focusing
Lens (Focus Lens)（It is not painted）.Wherein, the Zoom lens of camera lens 42 and focus lens can be in a pre-set interval intrinsic displacements.
In an embodiment, driver 41 can drive Zoom lens in telescope end (Tele End) and wide-angle side（Wide
End）Between be amplified (Zoom-in) or reduce the zoom actions such as (Zoom-out), to ensure that camera lens module 40 is in most suitable
When camera shooting section.Further, the position of 41 fine-tuning focus lens of driver, to find best focusing position.
Fig. 2 is that the electronic device 1 of one embodiment of the invention executes focusing curve graph when focusing flow.Wherein Fig. 2's
The longitudinal axis represents focus data, and horizontal axis represents focusing position.
Referring concurrently to Fig. 1 and Fig. 2.In an embodiment, when electronic device 1 carries out focus operation, focus lens are in one
Focusing section D1 focus, defined in from a first position F1 to a second position F2 for focusing section D1.For example,
Driver 41 can drive focus lens to carry out displacement in focusing section D1 in a stepping manner, and when focus lens often move one
Unit distance, sensing module 20 are to capture an image of the corresponding position, and the side of each image is analyzed by signal processing module 50
Edge value or modulation transfer function value（Modulation Transfer Function, MTF）, to constitute the focusing curve such as Fig. 2.
In an embodiment, signal processing module 50 further judge the first predeterminated position F1 and the second predeterminated position F2 it
Between boundary curve with the presence or absence of one absolutely or relative maximum.If signal processing module 50 judges that boundary curve is existing absolutely
Pair or relative maximum, then determine that corresponding with absolute or relative maximum position is the best focusing position of electronic device 1.
In an embodiment, electronic device 1 can enter first state according to the instruction of user, at this point, signal processing mould
Block 50 enables sensing module 20 to capture multiple first images, then display module 30 is enabled to show the shadow being made of multiple first images
As crossfire.If electronic device 1 is separately enabled to enter the second state, even if 50 sensing module 20 of signal processing module is to capture multiple the
Two images, and display module 30 is enabled to show the video streaming being made of the second image.
Furthermore, first state can be the mould for executing preview (Preview) or capturing dynamic image (Video)
Formula.The instruction of the meeting basis signal of sensing module 20 processing module 50 at this time continuously captures first with first frequency or period 1
Image, and export the video streaming of the first image；And the second state can be electronic device 1 is performed simultaneously multiple actions, such as
It is under the premise of lasting progress preview or acquisition dynamic image, the Zoom lens of camera lens module 40 are simultaneously in telescope end and wide-angle
Zoom action is carried out between end, alternatively, executing focus operation by focus lens.At this point, sensing module 20 can with second frequency or
Second round continuously captures the second image.
In this present embodiment, if camera lens module 40 carries out focus operation under the second state, processing module 50 is i.e. into one
The marginal value or modulation transfer function value of the second image of step ground analysis, to obtain best focusing position.
In another embodiment, in the second condition, processing module 50 provides third according to the video streaming of the second image
The video streaming of image, and include the video streaming of third image by 30 simultaneous display of display module.Specifically, signal processing
Module 50 first sequentially can carry out signal operation to multiple second images for coming from sensing module 20, and provide the shadow of third image
As crossfire gives display module 30.
In the present invention, signal processing module 50 can pass through the first gain of the first image and the second gain of the second image
Signal operation is carried out, to obtain third image.
In an embodiment, sensing module 20 export the second image IA (1), IA (2), IA (3), IA (4) ... IA
(4k) ..., wherein k are positive integers.Signal processing module 50 is by multiple second image IA (4k-3)~IA (4k) corresponding pixel
Value is cumulative, to obtain a frame third image IB (k).
Specifically, signal processing module 50 can be by first picture of consecutive second image IA (4k-3)~IA (4k)
Element value is added, to constitute first pixel value of third image IB (k), by consecutive second image IA (4k-3)~IA (4k)
Second pixel value be added, with the second pixel value ... that constitutes third image IB (k), the rest may be inferred.In this way, can then pass through
4k frames the second image IA (1)~IA (4k) obtains k frame third image IB (1)~IB (k).
It, can also be further to cumulative IA (the 4k-3)~IA (4k) divided by one of the second image after adding up in another embodiment
Constant.Wherein, this constant can correspond to one second gain of the second image divided by increase corresponding to the one first of the first image
The obtained quotient of benefit.
Fig. 3 A are the schematic diagram of the formation third image of one embodiment of the invention.
As shown in Figure 3A, sensing module 20 export the second image IA (1), IA (2), IA (3), IA (4), IA (5), IA (6),
IA (7), IA (8) ... IA (4i) ..., wherein i is positive integer.Signal processing module 50 respectively will be per frame the second image IA (1)~IA
(4) divided by a constant.Wherein, this constant can correspond to the second gain of the second image divided by corresponding to the of the first image
The obtained quotient of one gain.Signal processing module 50 obtains third after being added the second image IA (1)~IA (4) divided by constant again
Image IB (1).Similarly, signal processing module 50 respectively will per frame the second image IA (5)~IA (8) divided by constant, then be added with
Obtaining third image IB (2) ..., the rest may be inferred.
In short, signal processing module 50 can respectively will be per frame the second image IA (4i-3)~IA (4i) divided by a constant
（That is, the quotient obtained by the second gain divided by the first gain）, then be added to obtain third image IB (i).On the other hand, at signal
Manage module 50 also first will can be added the General Logistics Department to the second image IA (4i-3)~IA (4i), then divided by constant, to obtain third image
IB (i), and be not limited.
Specific calculating formula is as follows：
Third image IB (1)=second image IA (1)/(the second gain/first gain)+the second image IA (2)/(second increases
Benefit/first gain) the+the second image IA (3)/(the second gain/first gain)+the second image IA (4)/(the second gain/first increases
Benefit)
Third image IB (2)=second image IA (5)/(the second gain/first gain)+the second image IA (6)/(second increases
Benefit/first gain) the+the second image IA (7)/(the second gain/first gain)+the second image IA (8)/(the second gain/first increases
Benefit)
The images of third image IB (i)=second IA (4i-3)/(the second gain/first gain)+the second image IA (4i-2)/
(the second gain/first gain)+the second image IA (4i-1)/(the second gain/first gain)+the second image IA (4i)/(second
The gain of gain/first)
Signal processing module 50 can be the corresponding pixel in position in every frame the second image IA (4i-3)~IA (4i)
Pixel value carry out operation, to constitute in third image IB (i), the pixel value of the corresponding pixel in position.
In an embodiment, sensing module 20 captures the second image IA (4i) with the second frequency of y frames per second, and provides packet
The video streaming for including the second image IA (4i) gives signal processing module 50, and signal processing module 50 is with the frequency of y/4 frames per second
Output includes that the video streaming of third image IB (i) gives display module 30.
In another embodiment, sensing module 20 captures the second image IA (4i) with every exposed frame n seconds second rounds,
And it includes that the video streaming of the second image IA (4i) gives signal processing module 50, and signal processing module 50 is shown with every frame to provide
Display cycle output in 4n seconds includes that the video streaming of third image IB (i) gives display module 30.
In addition, Fig. 3 B are the schematic diagram of the formation third image of another embodiment of the present invention.
Please refer to Fig.3 B, in this present embodiment, sensing module 20 export IA (1), IA (2), IA (3), IA (4), IA (5),
IA (j) ..., wherein j are positive integers to IA (6) ....Signal processing module 50 also can respectively will be per frame the second image IA (1)~IA (4)
A divided by constant（That is, the quotient obtained by the second gain divided by the first gain）, then be added to obtain third image IB ' (1)；Together
Reason per frame the second image IA (2)~IA (5) divided by constant, then is added to obtain third image IB ' (2).Also that is, signal processing
Module 50 respectively will per frame the second image IA (j)~IA (j+3) divided by constant, and be added to obtain third image IB ' (j), with
This analogizes.In other words, signal processing module 50 also first will can be added the General Logistics Department to the second image IA (j)~IA (j+3), then sequentially remove
With constant, to obtain third image IB ' (j), and it is not limited.
Specific calculating formula is as follows：
Third image IB ' (1)=second image IA (1)/(the second gain/first gain)+the second image IA (2)/(second
The gain of gain/first) the+the second image IA (3)/(the second gain/first gain)+the second image IA (4)/(the second gain/the first
Gain)
Third image IB ' (2)=second image IA (2)/(the second gain/first gain)+the second image IA (3)/(second
The gain of gain/first) the+the second image IA (4)/(the second gain/first gain)+the second image IA (5)/(the second gain/the first
Gain)
The image IA (j) of third image IB ' (j)=second/(the second gain/first gain)+the second image IA (j+1)/(
The gain of two gains/first) the+the second image IA (j+2)/(the second gain/first gain)+the second image IA (j+3)/(second increases
Benefit/first gain)
Signal processing module 50 can be in the second image IA (j) of every frame~IA (j+3), the corresponding pixel in position
Pixel value carries out operation, to constitute in third image IB ' (j), the pixel value of the corresponding pixel in position.
In an embodiment, sensing module 20 captures the second image IA (j) with the second frequency of y frames per second, and provides packet
The video streaming for including the second image IA (j) gives signal processing module 50, and signal processing module 50 is with the rate-adaptive pacemaker of y frames per second
Video streaming including third image IB ' (j) gives display module 30.
In another embodiment, sensing module 20 captures the second image IA (j) with every exposed frame n seconds second rounds, and
Offer includes that the video streaming of the second image IA (j) gives signal processing module 50, and signal processing module 50 shows n with every frame
The display cycle output of second includes that the video streaming of third image IB ' (j) gives display module 30.
It is noted that above-mentioned sensing module 20, camera lens module 40 are removed with signal processing module 50 can be configured to hardware dress
Set, software program, firmware or combinations thereof it is outer, can also borrow circuit loop or other appropriate patterns configurations；Also, modules remove can
Pattern configuration outer with the configuration of individual pattern, can also combining.In addition, present embodiment only illustrates the preferable implementation of the present invention
Example does not record all possible variation combination in detail to avoid repeating.However, it should be understood that, on
It may not be all necessary to state each module or element.And to implement the present invention, it may also include the known module or member of other more details
Part.Each module or element all may be omitted or be changed depending on demand, and other modules or member may not be not present in wantonly two intermodule
Part.
Then, Fig. 4 is the step flow chart of the image display method of one embodiment of the invention.
It please also refer to Fig. 1 and Fig. 4.First, step 301 is carried out：In first state, executes a video streaming and capture journey
Sequence, the video streaming for by sensing module 20 obtaining that there are multiple first images.Wherein, sensing module 20 is with the of x frames per second
One frequency, it is continuous to capture the first image；Or with every frame m seconds period 1, continuously capture multiple first images.For example,
Sensing module 20 can continuously capture the first image with the first frequency of 30 frame per second, or continuous with 1/30 second period 1 of every frame
Capture multiple first images.
Secondly, step 302 is carried out：The video streaming of the first image is shown using display module 30.In this step, it shows
Module 30 can continuously display the first image with the frequency of x frames per second；Or with every frame m seconds periods, continuously display the first image.
Then, step 303 is carried out：Electronic device 1 is converted to the second state by first state.At this point, sensing module 20 changes
With the second frequency of y frames per second, or per n seconds second rounds of frame, multiple second images are continuously captured, and export with second
The video streaming of image.For example, sensing module 20 can continuously capture the second image with the second frequency of 120 frame per second, or
Multiple second images are continuously captured with 1/120 second second round of every frame.
In an embodiment, in the second state, electronic device 1 can be the shadow that the second image is captured with sensing module 20
As crossfire, focus operation or zoom action are executed with season camera lens module 40.
Then, step 304 is carried out：The video streaming of multiple second images is converted to using signal processing module 50 multiple
The video streaming of third image.
In an embodiment, signal processing module 50 is to add up to the pixel value of the pixel of multiple second images, with
Obtain corresponding third image.
In another embodiment, signal processing module 50 increases according to the first gain of the first image and the second of the second image
Benefit carries out operation, to obtain the video streaming of third image to the pixel value of multiple second images.
Finally, step 305 is carried out：The video streaming of third image is shown by display module 30.Wherein, display module 30 can
With the frequency of x frames per second or y frames per second, third image is continuously displayed；Alternatively, with every frame m seconds or n seconds periods, it is continuous aobvious
Show third image.For example, x=30, y=120, m=30 and/or n=120, but not limited to this.
It must be noted that the method that video streaming of the invention is shown is not limited with above-mentioned step order, only
It wants that the purpose of the present invention can be reached, above-mentioned step order can be also changed.
To sum up institute is old, and no matter the present invention shows its totally different in known skill with regard to goal of the invention, technical solution and advantageous effect
The feature of art.Only it should be noted that above-mentioned many embodiments are illustrated only for the purposes of explanation, power of the presently claimed invention
Sharp range is from that should be subject to claims, not just the above examples.
Claims (12)
1. a kind of image display method, which is characterized in that including：
With a first frequency or a period 1, multiple first images are captured, and show such first image；
With a second frequency or a second round, multiple second images are captured；And
Multiple third images are calculated according to such second image, and show the such third shadow calculated by such second image
Picture, and each such third image is synthesized by least the two in such second image respectively.
2. image display method as described in claim 1, which is characterized in that such second image per specific frame number is summed into
The such third image of one frame.
3. image display method as claimed in claim 2, which is characterized in that after multiple such second images are cumulative, Chu Yiyi
Constant；Or multiple such second images mutually add up respectively divided by after the constant.
4. image display method as claimed in claim 3, which is characterized in that the constant is the one of corresponding such second image
The quotient of two gains divided by one first gain of corresponding such first image.
5. image display method as described in claim 1, which is characterized in that such third image with the first frequency, this
One period, the second frequency or second round display.
6. the image display method as described in claim 1-5 is arbitrary, which is characterized in that the second frequency is the first frequency
Integral multiple and/or the period 1 are the integral multiples of the second round.
7. a kind of electronic device, which is characterized in that including：
One sensing module captures multiple first images with a first frequency or a period 1, or with a second frequency or one the
Two cycles capture multiple second images；
One signal processing module receives such second image, and accordingly exports multiple third images；And
One display module, the such third image for showing such first image or being calculated by such second image, and each
Such third image is synthesized by least the two in such second image respectively.
8. electronic device as claimed in claim 7, which is characterized in that the signal processing module adjacent particular frame that adds up is such
Second image, to become the such third image of a frame.
9. electronic device as claimed in claim 7, which is characterized in that further include：
The signal processing module adds up after multiple such second images divided by a constant, or makes multiple such second images respectively
Divided by it after the constant, mutually adds up；
Wherein, which is equal to one second gain of corresponding such second image divided by the one first of corresponding such first image increases
Benefit.
10. electronic device as claimed in claim 7, which is characterized in that the display module shows such in a first state
One image, or in the such third image of one second status display.
11. electronic device as claimed in claim 10, which is characterized in that further include a camera lens module, the camera lens module is in this
Second state carries out zoom or focusing.
12. the electronic device such as claim 7-11, which is characterized in that the display module with the first frequency, this
Period 1, the second frequency or the second round show such third image.
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| CN1941918A (en) * | 2005-09-30 | 2007-04-04 | 卡西欧计算机株式会社 | Imaging device and imaging method |
| CN101285989A (en) * | 2007-04-12 | 2008-10-15 | 索尼株式会社 | Auto-focus apparatus, image-pickup apparatus, and auto-focus method |
| CN103259976A (en) * | 2012-02-17 | 2013-08-21 | 佳能株式会社 | Image processing apparatus, image pickup apparatus, image processing method |
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| JP5219778B2 (en) * | 2008-12-18 | 2013-06-26 | キヤノン株式会社 | Imaging apparatus and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1941918A (en) * | 2005-09-30 | 2007-04-04 | 卡西欧计算机株式会社 | Imaging device and imaging method |
| CN101285989A (en) * | 2007-04-12 | 2008-10-15 | 索尼株式会社 | Auto-focus apparatus, image-pickup apparatus, and auto-focus method |
| CN103259976A (en) * | 2012-02-17 | 2013-08-21 | 佳能株式会社 | Image processing apparatus, image pickup apparatus, image processing method |
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