CN1756269A - Mobile communication terminal equipped with digital image capturing module and method of capturing digital image - Google Patents
Mobile communication terminal equipped with digital image capturing module and method of capturing digital image Download PDFInfo
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- CN1756269A CN1756269A CNA2005100004037A CN200510000403A CN1756269A CN 1756269 A CN1756269 A CN 1756269A CN A2005100004037 A CNA2005100004037 A CN A2005100004037A CN 200510000403 A CN200510000403 A CN 200510000403A CN 1756269 A CN1756269 A CN 1756269A
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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
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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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
- H04N23/71—Circuitry for evaluating the brightness variation
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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
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
-
- 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
- H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0016—Inter-integrated circuit (I2C)
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Abstract
Disclosed are a mobile communication terminal equipped with a digital image capturing module and a method of capturing a digital image. The mobile communication terminal includes: a camera module for acquiring digital image data; a storage unit for storing the acquired digital image data; a display unit for displaying the acquired digital image data; and a control module for calculating mean luminance values of frames acquired during a predetermined time, calculating an image's luminance value by averaging the mean luminance values of all the frames except frames having significantly high deviations in mean luminance, and transmitting to the camera module a control instruction for controlling an exposure time based on the image's luminance value at regular intervals. The method includes the steps of: converting an analog image signal captured by the image pickup unit into digital image data; calculating a luminance value of the image based on the digital image data; and controlling an exposure time of the image pickup unit according to the calculated luminance value.
Description
Related application
The application requires the korean patent application No.2004-78442 that submits in Korea S Department of Intellectual Property on October 1st, 2004 and the priority of 2004-78443, and wherein disclosure is incorporated into this as a reference and intactly.
Technical field
The present invention relates to a kind of mobile communication terminal, and relate in particular to a kind of method with mobile communication terminal and a kind of capturing digital image of capturing digital image function.
Background technology
In general, digital camera is converted into numerical data with the picture signal that image acquisition units captures, and stores the numerical data that this numerical data and demonstration are stored.Described image acquisition units output and optical signalling or the proportional signal of light intensity, thus the brightness of destination object is reflected in the images acquired.When the brightness of destination object was too high or too low, the quality of the image of being gathered may worsen.
In order to address the above problem, digital camera comprises the illuminance transducer of additional detection surrounding environment brightness.Therefore, digital camera is adjusted its aperture automatically based on detected brightness, thereby improves picture quality.Yet, add additional illuminance transducer and make that the mobile communication terminal of configuration executed in compact digital cameras or outfit digital-code camera module is very difficult.
Summary of the invention
The invention provides a kind of mobile communication terminal that is equipped with digital-code camera module, the brightness with based target object is adjusted drainage pattern automatically and is not used the function of accessory assembly therefor, and a kind of method that keeps lightness stabilized capturing digital image.
According to one aspect of the invention, a kind of mobile communication terminal is provided, comprising: the camera model that is used for the capturing digital image data; Be used to store the memory cell of the DID of being gathered; Be used to show the display unit of the DID of being gathered; And control module, be used for calculating the average brightness value of the frame of gathering at the fixed time, and the average brightness value to all frames except the frame with very big mean flow rate deviation averages and the brightness value of computed image, and controls the time for exposure with regular intervals of time on the camera model sending controling instruction is used for basis at the brightness value of image.
From the control command of control module output can be the data related with number of pictures per second.
Described mobile communication terminal may further include the signal processing module that is used to handle from the DID of camera model output, DID after handling is stored in the memory cell, and after will handling or output to display unit from the DID that memory cell reads.
Signal processing module may further include color converter, is used for the color component value of converting digital view data, and described control module can comprise: brightness calculator is used for from the brightness value of DID calculating destination object; Exposure control unit is used for determining the time for exposure of image acquisition units on the basis of the brightness value that brightness calculator is calculated, and sends the time for exposure control command to camera model; And the color conversion controller, be used for the color conversion scheme of control color converter on the basis of the brightness value that brightness calculator is calculated.
Color converter can be selected any one conversion table according to the control command of color conversion controller, and is operating basis with the conversion table of selecting, and at least U in the input signal and V signal is carried out map operation.
Control module can comprise: brightness calculator is used for the average brightness value by calculating the frame of gathering in the scheduled time and the average brightness value of all frames except the frame with very big mean flow rate deviation is averaged and the brightness value of computed image; And exposure control unit, thereby be used on the basis of the brightness value of image, controlling the time for exposure to the camera model sending controling instruction with the regular time interval.
Brightness calculator can be by to averaging and the brightness value of computed image except having the average brightness value that exceeds all frames the frame of a predetermined value than former frame average brightness value in the scheduled time.
Brightness calculator can be by calculating the frame of gathering in the scheduled time the mean value of average brightness value, and the average brightness value of all frames except the frame of the large deviation very of comparing with the mean value of the average brightness value of the frame that calculates averaged and the brightness value of computed image.
Control module can be by the work of serial bus control camera model.
According to a further aspect of the present invention, provide a kind of method of utilizing image acquisition units to catch image, comprise step: a) analog picture signal that image acquisition units is caught is converted to DID; B) according to the brightness value of DID computed image; And c) controls time for exposure of image acquisition units according to the brightness value that calculates.
Step b) can comprise step: the average brightness value that b1) calculates the picture frame of gathering in the given time; And b2) and by average brightness value average and the brightness value of computed image all frames except the frame that has very big mean flow rate deviation than reference value.
Step b2) can comprise step: by to averaging and the brightness value of computed image except having the average brightness value that exceeds all frames the frame of average brightness value of a predetermined value than former frame average brightness value in the scheduled time.
Step b2) can comprise step: the mean value that calculates the average brightness value of the frame of gathering in the scheduled time; And average and the brightness value of computed image by average brightness value to all frames the frame that large deviation is arranged except the mean value than the average brightness value of the frame that calculates very much.
Described method may further include step: d) according to the image brightness value that calculates the color of DID is carried out map operation.
Step d) can comprise step: select any one conversion table and be operating basis with the conversion table selected, at least U in the DID and V signal are carried out map operation.
Step c) can comprise the step of the number of pictures per second of controlling image acquisition units.
Description of drawings
Above-mentioned and other characteristics of the present invention and advantage can be by with reference to the accompanying drawings and to the detailed descriptions of its example embodiment and clearer, wherein:
Fig. 1 shows the structure chart of mobile communication terminal according to an embodiment of the invention; And
Fig. 2 shows the flow chart of catching the method for image in the mobile communication terminal according to an embodiment of the invention.
Embodiment
With reference now to accompanying drawing, example embodiment according to the present invention is described in detail.
Fig. 1 shows the structure chart of mobile communication terminal according to an embodiment of the invention.Described mobile communication terminal comprises the camera model 500 that is used for the capturing digital image data, be used to store the memory cell 290 of DID, be used to show the display unit 270 of DID, and the brightness value that is used on the DID basis calculating destination object, and export the control module 100 of control signal based on the brightness value that calculates with time for exposure of adjusting camera model 500.Display unit 270 is gone back display menu and operational status information except showing digital picture.LCD (LCD) is an example of display unit 270.
Mobile communication terminal also comprises keyboard 250, the RF signal that is used for sending from antenna extracts radio frequency (RF) module 230 of voice-and-data signal, and is used for by microphone or loud speaker phonetic entry/output (I/O) circuit 210 of the voice communication signals I/O that receives from RF module 230.
The RF module 230 that comprises antenna and RF circuit communicates with the base station.In this manual, in the mobile communication project that RF module 230 is interpreted as can be used for occurring in the future, and the module in the existing mobile communication project, for example CDMA, TDMA, PDC and GSM.Otherwise voice I/O circuit 210 with digital voice data be converted to analog voice signal or and go, and comprise adjunct circuit, audio frequency amplifier for example well known in the art or filter.
Baseband processing circuitry in the RF module 230 and phone control module 100 are integrated on the commercial available monolithic chip, are commonly referred to mobile station modems (MSM) chip.Such integrated circuit (IC) chip comprises the specialized hardware that is used to handle communication service, digital signal processor, and general purpose microprocessor.
Camera model 500 will be converted to the signal of telecommunication by the optical signalling that lens system receives, and export this signal of telecommunication.Signal processing module 300 is handled from the picture signal of camera model 500 outputs, and the picture signal after will handling outputs to display unit 270 or stores picture signal into memory cell 290, for example built-in or detachable flash memory, perhaps hard disk.
In accordance with a preferred embodiment of the present invention, by the universal serial bus exchange, described universal serial bus is I in one embodiment of the invention to control signal between control module 100, signal processing module 300 and camera model 500
2The C bus.Described I
2The C bus is also referred to as " Inter-IC bus ", is the two-way universal serial bus of two-wire by the exploitation of Philips electronics corporation, thereby provides serial data line and serial clock line interface in exchanged between equipment information.
According to another preferred embodiment of the present invention, camera model 500 comprises lens system 590; Image acquisition units 510; Be used for the analog picture signal that image acquisition units 510 is caught is converted to the transducer 530 of DID; And be used for according to the image capture controller 550 that outputs a control signal to image acquisition units 510 from the control command of control module 100.Lens system 590 is made up of one or more micro objectives, focuses on and provide light to arrive image acquisition units 510.
Image acquisition units 510, typically being made of complementary metal oxide semiconductor (CMOS) or charge-coupled device (CCD) imageing sensor, is to be used for each pixel is converted to the signal of telecommunication with light signal and sequentially exports the known elements of the signal of telecommunication after the conversion with synchronised clock.The optical charge charging interval is corresponding to traditional film type magazine film exposure time.The above-mentioned optical charge charging interval is by the frequency and the duty ratio control of the clock that produces in the image capture controller 550.
According to another preferred embodiment of the present invention, the time for exposure of image acquisition units 510 is whole based on the frame velocity modulation.For example, shorter with feasible time for exposure of the frame of per second 30 frames speed output image data than the feasible time for exposure with the frame speed output image data of per second 20 frames.
Transducer 530 will be converted to digital data stream with the proportional curtage signal flow of brightness of the image of image acquisition units 510 output, and this digital data stream is converted to yuv format subsequently.
Image capture controller 550 bases are from I
2The external command that the C bus interface is received and control the overall work of camera model 500.According to another preferred embodiment of the present invention, the time for exposure control command that image capture controller 550 receives according to the exposure control unit 150 that comprises in control module 100 and control the time for exposure of image capture device by outputting a control signal to image acquisition units 510.Image capture controller 550 in the camera model 500 can be implemented as microprocessor or simple digital logical circuit.Image capture controller 550 provides drive clock to be used to catch view data to image capture device.Being used to of image acquisition units 510 output controlled the control command of time for exposure and can be described drive clock.For example, the optical charge acquisition time of each pixel (being the time for exposure) can be controlled by drive clock in the image capture device.Transducer 530 is synchronized with drive clock and carries out data transaction.
Control module 100 comprises that communication processor 110 is used to control voice communications versus data communications.According to another preferred embodiment of the present invention, control module 100 comprises brightness calculator 130 and exposure control unit 150.
Brightness calculator 130 is by calculating brightness value by the view data after transducer 530 conversions.According to another preferred embodiment of the present invention, the brightness value of destination object is to average by the brightness value to the view data related with single frames to obtain.According to another preferred embodiment of the present invention, the brightness value of destination object is to obtain by the average brightness value of the frame except the frame with very big mean flow rate deviation in the predetermined time interval is averaged.Above-mentioned brightness calculation method will be described below.
Exposure control unit 150 is determined the time for exposure of image acquisition units 510 on the basis of the brightness value that is calculated by brightness calculator 130, and output time for exposure control command is to image capture controller 550.
The brightness value of destination object is divided into the group of predetermined quantity with convenient control.According to one embodiment of the invention, suppose to be expressed as " Y " by the brightness value that brightness value is averaged the destination object that calculates, this brightness value be divided into three mutually between in the groups of different controls.Described three groups are as follows:
Y:0～34 (0～5 lux) → night pattern,
Y:35～88 (6～120 lux) → night mode,
Y:89～255 (surpass 120 luxs) → daytime pattern
According to another preferred embodiment of the present invention, the data of control signal that exposure control unit 150 produces for being associated with number of pictures per second.In more detail, if exposure control unit 150 detected " Y " value is designated as the pattern at night, exposure control unit 150 output control signals have reduced the frame number that per second is gathered thus to increase the time for exposure of image acquisition units 510.Therefore, thus the time for exposure of every frame increases image acquisition units 510 can receive enough light.
For instance, under the situation of pattern at night, frame speed reduces to per second 10 frames to increase the time for exposure.Under the night mode situation, frame speed limit built in about per second 20 frames to obtain the suitable time for exposure.Under the pattern situation, frame speed is set at normal frame speed in the daytime, i.e. per second 30 frames.Therefore, thus when illumination condition is very poor, still can obtain good distinct image even can guarantee enough time for exposure.
In this manner, it is detected and wait to catch brightness Be Controlled on the basis of the brightness that is detected of image to catch the brightness of image.Therefore, the time for exposure is controlled automatically and is not needed to use additional illuminance transducer to detect the brightness of catching image.
Signal processing module 300 receives and handles from the yuv format view data of camera model 500 and will be through the YUV image data storage after the signal processing in memory cell 290.Signal processing module 300 will directly output to display unit 270 through the view data after the signal processing, perhaps will output to display unit 270 through the view data after the signal processing from memory cell 290.According to another preferred embodiment of the present invention, signal processing module 300 comprises image processor 321 and image output unit 323.
321 pairs of image processors receive the view data of rotation parallel operation 530 and carry out image enhancement processing, compress and store this view data and decompress in memory cell 290 or to the view data that is stored in the memory cell 290.
Image output unit 323 is converted to the form that is suitable for display unit 270 with the view data of image processor 321 or memory cell 290 outputs, the data after buffering and the output conversion.
According to another preferred embodiment of the present invention, signal processing module 300 further comprises color converter 325, and controller 310 further comprises color conversion controller 170.Color converter 325 under the control of color conversion controller 170 in transducer 530, being converted to DID and U and V color component from the yuv format view data of transducer 530 output are changed.
Color conversion controller 170 is controlled U, the V map operation of color converter 325 according to the brightness value that is calculated by brightness calculator 130.Increasing the brightness of catching image in the dark surrounds by the time for exposure that increases may make the chromaticity of image degenerate.According to another preferred embodiment of the present invention, color converter 325 has best U, the V conversion table with reference to various patterns, and uses conversion table selected under the control of color conversion controller 170 to carry out the map operation of U, V data.According to another preferred embodiment of the present invention, color conversion controller 170 is with the algorithm work identical with exposure control unit 150.In the case, color conversion controller 170 and exposure control unit 150 can be integrated in the individual unit.According to another preferred embodiment of the present invention, color conversion controller 170 can provide the pattern abundanter than exposure control unit 150.
Conversion table can use experimental technique to calculate.In more detail, conversion table obtains by the perusal color-values, and color-values also is corrected when the brightness value of every kind of pattern is corrected.That is to say, control the color of catching image and brightness simultaneously to obtain suitable brightness and color according to mobile communication terminal of the present invention.
Fig. 2 shows the flow chart of catching the method for image in the mobile communication terminal according to an embodiment of the invention.Described method comprises step: the analog picture signal that image acquisition units 510 is caught is converted to DID (S110 and S130), based on the brightness value (S150, S170, S190 and S210) of DID calculating required image, and the time for exposure (S230 and S250) of controlling image acquisition units 510 based on described brightness value.
Image acquisition units 510 focuses on by lens system 590, and light signal is converted to electrical analogue picture signal (step S110).Described analog picture signal is converted to DID (step S130) then through amplifying and the pre-filtering processing in transducer 530.DID after the conversion is divided into brightness data and chromatism data, and 4: 2: 2 rate conversion with Y, U, V is YUV signal (step S150) then.
According to another preferred embodiment of the present invention, the step of calculating the brightness value of required image comprises step: the average brightness value (step S170) of each picture frame and the average brightness value of all frames except the frame that has very big mean flow rate deviation than predetermined reference value averaged (step S190 and S210) in calculating at the fixed time at interval.
Therefore, can avoid frequently changing image acquisition modality, and avoid image acquisition modality to change into not being inconsistent with true circumstances.That is to say,, near the borderline region between each pattern, may change to another kind of pattern from a kind of pattern adjusting under the situation of time for exposure based on input image lightness.For example, when according to daytime pattern change to the brightness value pattern of boundary value 88 places of night mode reading and be set to night mode and time for exposure when increasing thereupon, the brightness value of input picture is increased, thus pattern turns back to the pattern in daytime.Experiment shows that boundary value determines in scope is 82 to 88 brightness value.Similarly, when the boundary value 34 place's patterns that change to the pattern at night in night mode are set to pattern and time for exposure when increasing at night thereupon, the brightness value of input picture is increased, thereby pattern turns back to night mode.Experiment shows that boundary value determines in scope is 29 to 34 brightness value.Above-mentioned mode switch may be owing to other situations take place.For example, when destination object was very black, even background is bright, but mode switch may the frequent generation owing to very low average brightness value.In addition, when camera focus changed rapidly, pattern changed and may frequently take place owing to the deviation of destination object.The frequent transitions of above-mentioned pattern has significantly reduced picture quality.That will describe below can address the above problem according to image-pickup method of the present invention.
According to another preferred embodiment of the present invention, brightness calculator 130 is calculated the average brightness value of each frame in the scheduled time, and to averaging, and be defined as the brightness of image except the average brightness value of comparing all frames the frame with very big mean flow rate deviation with average back brightness value.In more detail, brightness calculator 130 is calculated the average brightness value that is associated with each frame (for example 30 frames) of generation in the scheduled time ' T ' (for example 1 second).The value of T method is by experiment calculated, and is the unit interval that changes image acquisition modality.The average brightness value of frame averages by the brightness value to all pixels of forming single frames and obtains (step S170).Compare with reference value for mean flow rate and to have very that the brightness value of large deviation is rejected (step S190).Reference value is to average the value that obtains by the average brightness value to the frame that produces in the scheduled time T.That is to say that the value that significantly departs from reference value is excluded.For example, under the situation of night mode, with respect to reference value depart from 6 or bigger average brightness value be rejected.
According to another preferred embodiment of the present invention, by to averaging the brightness of determining image except having the average brightness value that exceeds all frames the frame of average brightness value of a predetermined value than former frame average brightness value in the scheduled time.In more detail, the average brightness value of each frame is by sequential storage.The average brightness value of present frame is compared with the average brightness value of former frame.If the difference between two average brightness values is more than or equal to predetermined value, the average brightness value of present frame is rejected.For example, if present mode is a night mode, have mean value with respect to former frame depart from 6 or the frame of bigger average brightness value be rejected.Repeat aforesaid operations for a plurality of frames that produce in the scheduled time (for example per second 30 frames).
Subsequently, calculate the mean value (step S210) of the average brightness value of each frame of not giving up.Based on the mean value that calculates, the picture drainage pattern is confirmed as a kind of (the step S230) in pattern in daytime, night mode and the night pattern.
Suppose Y
4-Y
3=8, Y
10-Y
9=11, Y
N+1-Y
n≤ 6, and Y=(Y
1+ Y
2+ ... + Y
30)/28=85 is (promptly except Y
4And Y
10Mean value outside the value), controller picture drainage pattern is set to night mode.
After the picture drainage pattern is determined as mentioned above, adjust exposure value (step S250) according to described picture drainage pattern.According to another preferred embodiment of the present invention, exposure value is controlled by number of pictures per second.Exposure control unit 150 is determined number of pictures per second according to each picture drainage pattern.For example, be per second 20 frames night in the pattern, is per second 30 frames in the night mode, and be per second 40 frames daytime in the pattern.Subsequently, according to the picture drainage pattern control color-values of determining (step S270).By selecting mapping table according to the picture drainage pattern and controlling color-values according to mapping table mapping U, the V value selected.
Can see that from top description a kind of mobile communication terminal according to the present invention detects the brightness value of catching image, and adjusts exposure value automatically according to detected brightness value.Therefore, do not need to use to detect and catch the additional illuminance transducer of image brightness, thereby reduced parts, reduced production cost, and improved picture quality.
Mobile communication terminal according to the present invention is suitably changed the color of catching image according to the brightness of catching image.
And described mobile communication terminal is suitably controlled the time for exposure of image acquisition units, thereby has guaranteed stable picture quality.
Although invention has been described for reference example embodiment, it will be understood by those skilled in the art that can to its carry out on the various forms and details on change and do not deviate from the scope of the present invention that limits by appended claims.
Claims (20)
1. mobile communication terminal comprises:
Camera model is used for the capturing digital image data;
Memory cell is used for the DID of storage of collected;
Display unit is used to show the DID of collection; And
Control module, be used to calculate the average brightness value of the frame of gathering in the scheduled time, average and the brightness value of computed image by average brightness value, and be used on the basis of described image brightness value, controlling the time for exposure to camera model with regular time interval sending controling instruction to all frames except frame with very big mean flow rate deviation.
2. mobile communication terminal according to claim 1, the control command of wherein said control module output is the data that are associated with number of pictures per second.
3. mobile communication terminal according to claim 1, it further comprises signal processing module, be used to handle DID from described camera model output, DID after handling is stored in the described memory cell, and after will handling or output to described display unit from the DID that described memory cell reads.
4. mobile communication terminal according to claim 3,
Wherein said signal processing module further comprises color converter, is used for the color component value of converting digital view data, and
Described control module comprises:
Brightness calculator is used for from the brightness value of DID calculating destination object;
Exposure control unit is used for determining the time for exposure of image acquisition units on the basis of the brightness value that described brightness calculator calculates, and sends the time for exposure control command to described camera model; And
The color conversion controller is used on the basis of the brightness value that described brightness calculator calculates the color conversion scheme of the described color converter of control.
5. mobile communication terminal according to claim 4, wherein said color converter is selected any one conversion table according to the control command of described color conversion controller, and with the conversion table of selecting is operating basis, at least U in the input signal and V signal is carried out map operation.
6. mobile communication terminal according to claim 1, wherein said control module comprises:
Brightness calculator is used for the average brightness value by calculating the frame of gathering in the scheduled time and the average brightness value of all frames except the frame with very big mean flow rate deviation is averaged and the brightness value of computed image; And
Exposure control unit, thus be used on the basis of described image brightness value, controlling the time for exposure to described camera model with the regular intervals of time sending controling instruction.
7. mobile communication terminal according to claim 6, wherein said brightness calculator is by to averaging and the brightness value of computed image except having the average brightness value that average brightness value than former frame exceeds all frames the frame of a predetermined value in the scheduled time.
8. mobile communication terminal according to claim 7, it further comprises signal processing module, be used to handle DID from described camera model output, store the DID after handling into described memory cell, and after will handling or output to described display unit from the DID that described memory cell reads.
9. mobile communication terminal according to claim 8,
Wherein said signal processing module further comprises color converter, is used for the color component value of converting digital view data, and
Described control module comprises:
Brightness calculator is used for from the brightness value of DID calculating destination object;
Exposure control unit is used for determining the time for exposure of image acquisition units on the basis of the brightness value that described brightness calculator calculates, and sends the time for exposure control command to described camera model; And
The color conversion controller is used on the basis of the brightness value that described brightness calculator calculates the color conversion scheme of the described color converter of control.
10. mobile communication terminal according to claim 9, wherein said color converter is selected any one conversion table according to the control command of described color conversion controller, and with the conversion table of selecting is operating basis, at least U in the input signal and V signal is carried out map operation.
11. mobile communication terminal according to claim 6, the mean value of the average brightness value of wherein said brightness calculator by calculating the frame of gathering in the scheduled time, and the average brightness value of all frames except the frame of comparing large deviation very with the mean value of the average brightness value of all frames that calculate averaged and the brightness value of computed image.
12. mobile communication terminal according to claim 6, wherein said control module is used the work of the described camera model of serial bus control.
13. a method of using image acquisition units to catch image comprises step:
A) analog picture signal that described image acquisition units is caught is converted to DID;
B) based on the brightness value of described DID computed image; And
C) control time for exposure of described image acquisition units according to the brightness value that calculates.
14. method according to claim 13, wherein said step b) comprises step:
B1) average brightness value of the picture frame of gathering in the calculating scheduled time; And
B2) by to averaging and the brightness value of computed image except the average brightness value of comparing all frames the frame with very big mean flow rate deviation with reference value.
15. method according to claim 14, wherein said step b2) comprise by in the scheduled time except having that average brightness value that average brightness value than former frame exceeds all frames the frame of a predetermined value averages and the step of the brightness value of computed image.
16. method according to claim 14, wherein said step b2) comprise step:
Calculate the mean value of the average brightness value of the frame of gathering in the scheduled time; And
Average and the brightness value of computed image by average brightness value all frames except the frame of comparing large deviation very with the mean value of the average brightness value of all frames that calculate.
17. method according to claim 14, its color map that comprises that further step d) is carried out DID according to the image brightness value that calculates is operated.
Select any one conversion table and be operating basis 18. method according to claim 17, wherein said step d) comprise, at least the U in the DID and V signal are carried out the step of map operation with the conversion table selected.
19. method according to claim 17, wherein said step c) comprises the step of the number of pictures per second of controlling described image acquisition units.
20. method according to claim 18, wherein said step c) comprises the step of the number of pictures per second of controlling described image acquisition units.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040078443 | 2004-10-01 | ||
| KR1020040078442A KR100706383B1 (en) | 2004-10-01 | 2004-10-01 | mobile communication terminal with digital photographying facility and method for picking up a digital image |
| KR1020040078442 | 2004-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1756269A true CN1756269A (en) | 2006-04-05 |
Family
ID=36689193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100004037A Pending CN1756269A (en) | 2004-10-01 | 2005-01-07 | Mobile communication terminal equipped with digital image capturing module and method of capturing digital image |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100706383B1 (en) |
| CN (1) | CN1756269A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104144300A (en) * | 2014-08-21 | 2014-11-12 | 青岛蓝图文化传播有限公司市南分公司 | Light compensating method for dual-mode mobile phone camera |
| CN104159045A (en) * | 2014-08-21 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Mobile phone camera with dual-mode light compensation |
| CN104219446A (en) * | 2014-08-27 | 2014-12-17 | 青岛蓝图文化传播有限公司市南分公司 | Automatic light-fill method of filming device |
| CN105681670A (en) * | 2016-02-29 | 2016-06-15 | 广东欧珀移动通信有限公司 | Control method, control device and electronic device |
| CN111988532A (en) * | 2020-07-16 | 2020-11-24 | 哈尔滨海能达科技有限公司 | Control method and device for night vision compensation lamp switch |
| CN114757833A (en) * | 2022-06-15 | 2022-07-15 | 北京中瑞方兴科技有限公司 | Vehicle side image splicing method and system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100703314B1 (en) * | 2004-11-24 | 2007-04-03 | 삼성전자주식회사 | Mobile terminal and method of providing a point of photographing time |
| KR100809286B1 (en) * | 2006-12-09 | 2008-03-07 | 이구 | Video signal processing device of security camera |
| CN109743129B (en) * | 2018-12-11 | 2020-08-18 | Oppo广东移动通信有限公司 | Electromagnetic interference control method and related product |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100393805B1 (en) * | 2001-07-09 | 2003-08-02 | 엘지전자 주식회사 | Lcd backlight controlling method for mobile communication device |
| KR100608717B1 (en) * | 2003-09-30 | 2006-08-04 | 엘지전자 주식회사 | Shutter speed control method for built-in camera of mobile communication terminal |
| KR100604520B1 (en) * | 2004-03-24 | 2006-07-24 | 주식회사 팬택앤큐리텔 | Camera phone |
| KR100677332B1 (en) * | 2004-07-06 | 2007-02-02 | 엘지전자 주식회사 | A method and a apparatus of improving image quality on low illumination for mobile phone |
-
2004
- 2004-10-01 KR KR1020040078442A patent/KR100706383B1/en not_active IP Right Cessation
-
2005
- 2005-01-07 CN CNA2005100004037A patent/CN1756269A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104144300A (en) * | 2014-08-21 | 2014-11-12 | 青岛蓝图文化传播有限公司市南分公司 | Light compensating method for dual-mode mobile phone camera |
| CN104159045A (en) * | 2014-08-21 | 2014-11-19 | 青岛蓝图文化传播有限公司市南分公司 | Mobile phone camera with dual-mode light compensation |
| CN104219446A (en) * | 2014-08-27 | 2014-12-17 | 青岛蓝图文化传播有限公司市南分公司 | Automatic light-fill method of filming device |
| CN105681670A (en) * | 2016-02-29 | 2016-06-15 | 广东欧珀移动通信有限公司 | Control method, control device and electronic device |
| CN111988532A (en) * | 2020-07-16 | 2020-11-24 | 哈尔滨海能达科技有限公司 | Control method and device for night vision compensation lamp switch |
| CN111988532B (en) * | 2020-07-16 | 2022-07-12 | 哈尔滨海能达科技有限公司 | Control method and device for night vision compensation lamp switch |
| CN114757833A (en) * | 2022-06-15 | 2022-07-15 | 北京中瑞方兴科技有限公司 | Vehicle side image splicing method and system |
| CN114757833B (en) * | 2022-06-15 | 2022-09-27 | 北京中瑞方兴科技有限公司 | Vehicle side image splicing method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100706383B1 (en) | 2007-04-10 |
| KR20060029476A (en) | 2006-04-06 |
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