CN104916259B - Control the method, apparatus and medical display of the brightness of display screen of medical display - Google Patents
Control the method, apparatus and medical display of the brightness of display screen of medical display Download PDFInfo
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Abstract
The invention discloses the method and devices of a kind of medical display, the brightness of display screen for controlling medical display, for solving the problems, such as that equipment operation complexity existing in the prior art is high.This method comprises: obtaining the ambient light illumination of each display area of display screen, which is divided at least two display areas；Judge ambient light illumination that this gets and the last ambient light illumination got whether within the scope of same ambient light illumination respectively each display area；The ambient light illumination and the last ambient light illumination got got for this not display area within the scope of same ambient light illumination, the corresponding backlight illumination of the ambient light illumination range backlight illumination of the display area being adjusted to where the ambient light illumination that this gets, and calibrated the gray-scale intensity of each pixel of the display image of the display area according to backlight illumination adjusted.
Description
Technical field
The present invention relates to medical image display field more particularly to a kind of method, apparatus for controlling brightness of display screen and doctors
Treat display.
Background technique
Medical display is a kind of Professional display monitor dedicated for medical field, and compared with other displays, it has certainly
Oneself different feature.For example, brightness is high, high resolution, stability are high and meet medical digital images communication standard (DICOM)
The gray scale of 14th part shows canonical function etc..
One width medicine gray scale image may be printed on film, it is also possible to be stored on host computer by different electronics
Display equipment shows how to ensure that a width medicine gray scale image is shown on different devices, and make the information shown
With effect all, this just needs a unified standard.For this purpose, 1984, by American Society of Radiology (ACR) and International Electrical
The medical digital images of manufacturing industry association (NEMA) composition and communication standard joint committee, are proposed that " medical digital images are logical
News standard ", abbreviation dicom standard.14th part of dicom standard gives one " grey scale explicit function " (GSDF),
Visual characteristic of the function according to human eye, gives the corresponding relationship between the brightness and JND index of a medical display.
In the continually changing environment of ambient light, if the brightness constancy of medical display, the medical gray scale image of display
It is unable to satisfy the regulation of dicom standard, this requires the brightness of display screen in medical display is adjustable.Most of medical treatment is aobvious at present
Show that device is equipped with light modulation button, needs operator to be manually adjusted by light modulation button to control brightness, increase equipment operation
Complexity, and manually adjust and not can guarantee the brightness of display and meet dicom standard, reach the best visual effect.
Summary of the invention
The embodiment of the invention provides the method and devices of a kind of medical display, control brightness of display screen, for solving
Equipment operation complexity existing in the prior art high problem.
The embodiment of the invention also provides a kind of methods of brightness of display screen for controlling medical display, this method comprises:
The ambient light illumination of each display area of display screen is obtained, which is divided at least two viewing areas
Domain；
The ambient light illumination and the last environment light got that this gets are judged respectively for each display area
Whether illumination is within the scope of same ambient light illumination；
The ambient light illumination and the last ambient light illumination got got for this be not in same ambient lighting
Spend the display area in range, the ring backlight illumination of the display area being adjusted to where the ambient light illumination that this gets
The corresponding backlight illumination of border illuminance range, and each of image is shown to the display area according to backlight illumination adjusted
The gray-scale intensity of a pixel is calibrated.
The above-mentioned corresponding relationship for being previously stored with the backlight illumination that display screen may be adjusted to and ambient light illumination range, compared with
Good, it can be stored in a tabular form.
The above method passes through the ambient light illumination for obtaining each display area of display screen, according to ambient light illumination range pair
The grade answered determines that the ambient light illumination grade of which display area is changed compared with last time gets, with regard to basis
The corresponding relationship of ambient light illumination range and backlight illumination carries out backlight illumination adjustment to the changed display area, so
It is calibrated afterwards according to gray-scale intensity of the backlight illumination adjusted to each pixel of the display image of the display area, it is real
The adjust automatically of brightness of display screen is showed, and has been operated manually without using person, display operation has been answered to reduce
Miscellaneous degree.In addition, the brightness of adjust automatically display screen, is divided into multiple display areas especially by by display screen, according to difference
The ambient light illumination of display area is different, the backlight illumination of display screen can be adjusted with subregion and show each pixel of image
Gray-scale intensity ensure that the brightness of display meets dicom standard, reach the best visual effect.
Preferably, bright according to grayscale of the backlight illumination adjusted to each pixel of the display image of the display area
Degree calibrated, specifically can with but be not limited only to include following two implementation:
The first implementation:
According to display area backlight illumination adjusted and pre-set minimum gray brightness, based on medical digital at
As communication standard, determine that the corresponding Digital imaging in medicine standard of grayscale of each pixel of the display image of the display area is bright
Degree；
The grayscale that the gray-scale intensity of each pixel of the display image of the display area is adjusted to each pixel is corresponding
DICOM brightness.
Second of implementation:
The corresponding display look-up table (LUT, look-up-table) of display area backlight illumination adjusted is searched, really
The corresponding DICOM brightness of grayscale of each pixel of the display image of the fixed display area, thus by the display of the display area
The gray-scale intensity of each pixel of image is adjusted to the corresponding DICOM brightness of grayscale of each pixel；LUT is according to this acquisition
Ambient light illumination where the corresponding backlight illumination of ambient light illumination range and pre-set minimum gray brightness it is true in advance
Fixed.
Based on inventive concept same as embodiment of the method, the embodiment of the invention also provides a kind of control medical displays
Brightness of display screen device, which includes:
Acquiring unit, the ambient light illumination of each display area for obtaining display screen, display screen are divided at least two
A display area；
Judging unit, for judging that the ambient light illumination that this gets is obtained with the last time respectively for each display area
Whether the ambient light illumination got is within the scope of same ambient light illumination；
Adjustment unit, ambient light illumination and the last ambient light illumination got for getting for this do not exist
The backlight illumination of the display area is adjusted to this environment light got by the display area within the scope of same ambient light illumination
The corresponding backlight illumination of ambient light illumination range where illumination；And according to backlight illumination adjusted to the display area
Show that the gray-scale intensity of each pixel of image is calibrated.
Above-mentioned apparatus obtains the ambient light illumination of each display area of display screen, corresponding according to ambient light illumination range
Grade determines that the ambient light illumination grade of which display area is changed compared with last time gets, just according to environment
The corresponding relationship of illuminance range and backlight illumination carries out backlight illumination adjustment to the changed display area, then right
The gray-scale intensity of each pixel of the display image of the display area is calibrated, to realize for the aobvious of medical display
The adjust automatically of display screen brightness reduces the complexity to display operation.In addition, the brightness of adjust automatically display screen, especially
Be by the way that display screen is divided into multiple display areas, it is different according to the ambient light illuminations of different display areas, can be with subregion
It adjusts the backlight illumination of display screen and shows the gray-scale intensity of each pixel of image, ensure that the brightness of display meets
Dicom standard reaches the best visual effect.
Preferably, the device of the brightness of display screen of above-mentioned control medical display further includes determination unit:
Determination unit, for bright according to above-mentioned display area backlight illumination adjusted and pre-set minimum gray
Degree is based on Digital imaging in medicine communication standard, determines that the grayscale of each pixel of the display image of the display area is corresponding
DICOM brightness；
Adjustment unit is also used to, and it is each that the gray-scale intensity of each pixel of the display image of display area, which is adjusted separately,
The corresponding DICOM brightness of the grayscale of pixel.
Preferably, the device of above-mentioned control brightness of display screen further includes determination unit:
Determination unit determines that this is aobvious for searching the corresponding display look-up table of display area backlight illumination adjusted
Show the corresponding Digital imaging in medicine normal brightness of grayscale of each pixel of the display image in region；
Adjustment unit, for the gray-scale intensity of each pixel of the display image of the display area to be adjusted to each pixel
The corresponding Digital imaging in medicine communication standard brightness of grayscale；The display look-up table is the ambient light illumination got according to this
The corresponding backlight illumination of ambient light illumination range at place and pre-set minimum gray brightness are predetermined.
Based on inventive concept same as embodiment of the method, the present invention also provides a kind of medical display, the medical treatment is aobvious
Show that device includes:
Display screen, the display screen include display panel and backlight module；The display panel is divided at least two displays
Region；The backlight module includes and the one-to-one luminescence component in the display area；
Display panel drive module, for being shown with controlling above-mentioned display panel to the display panel outputting drive voltage
Diagram picture；
Backlight module drive module is used for respectively to each luminescence component outputting drive voltage, to control each luminous group
Part projects bias light to corresponding display area；
The illuminance transducer being arranged in a one-to-one correspondence with each display area, for measuring the environment light of corresponding display area
Illumination；
Central processing control module, the ambient light illumination measured for obtaining each illuminance transducer, and judge each
Whether the ambient light illumination that this ambient light illumination got of illuminance transducer is got with the last time is in same ambient lighting
It spends in range；The ambient light illumination and the last ambient light illumination got got for this be not in same ambient lighting
The corresponding display area of illuminance transducer in range is spent, Xiang Shangshu backlight module drive module exports first control signal, refers to
Show that the backlight module drive module to the corresponding luminescence component outputting drive voltage in the display area, projects the luminescence component
The backlight illumination of the display area is adjusted to the corresponding back of ambient light illumination range where the ambient light illumination that this gets
Brightness, and second control signal is exported to above-mentioned display panel drive module, indicate the display panel drive module to display
Display area outputting drive voltage on panel, so that the gray-scale intensity of each pixel of the display image of the display area obtains
To calibration.
Above-mentioned medical display is by being divided at least two display areas, the back of display screen for the display panel on display screen
Optical mode group includes measuring the environment of corresponding display area with the one-to-one luminescence component in display area, illuminance transducer
Illuminance, central processing control module obtains the ambient light illumination of each display area of display screen, according to ambient light illumination model
It encloses, determines that the variation in range has occurred in the ambient light illumination of which display area compared with last time gets, just according to ring
The corresponding relationship of border illuminance range and backlight illumination, control backlight module drive module to the changed display area into
The adjustment of row backlight illumination, controls the display panel drive module and calibrates to the gray-scale intensity of the display image of the display area,
The brightness of display screen adjust automatically for medical display is realized, and is operated manually without using person, to reduce
To the complexity of display operation.In addition, the brightness of adjust automatically display screen, multiple aobvious especially by display screen to be divided into
Show region, it is different according to the ambient light illumination of different display areas, backlight illumination and the display of display screen can be adjusted with subregion
The gray-scale intensity of each pixel of image ensure that the brightness of display meets dicom standard, reach the best visual effect.
Preferably, above-mentioned display panel is liquid crystal display panel.
Based on above-mentioned any medical display embodiment, preferably, above-mentioned backlight module drive module setting has and shines
The one-to-one output interface of component.
Detailed description of the invention
Fig. 1 is the method flow diagram of control brightness of display screen provided in an embodiment of the present invention；
Fig. 2 is the schematic device of control brightness of display screen provided in an embodiment of the present invention；
Fig. 3 is medical display schematic diagram provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides the method and devices of a kind of medical display, control brightness of display screen, for solving
Equipment operation complexity existing in the prior art high problem,.
Embodiments of the present invention is further illustrated with reference to the accompanying drawing.
The embodiment of the invention provides a kind of methods for controlling brightness of display screen, as shown in Figure 1, this method comprises:
Step 101: obtaining the ambient light illumination of each display area of display screen, which is divided at least two
Display area.
Wherein, ambient light illumination can with but be not limited only to be detected by illuminance transducer, light sensor can also be utilized
Device is detected and other equipment, as long as can be used in being suitable for the present invention with the equipment that environment light is detected.Such as
Fruit measures ambient light illumination using illuminance transducer, then is correspondingly arranged an illuminance transducer for each display area.It obtains aobvious
The ambient light illumination of each display area of display screen, that is, obtain the detected value of each illuminance transducer.
Preferably, the ambient light illumination for obtaining each display area of a display screen at regular intervals can be set,
Such as 30 minutes.
Step 102: the ambient light illumination that this gets is got with the last time to be judged respectively for each display area
Ambient light illumination whether within the scope of same ambient light illumination.
Wherein, the division of ambient light illumination range is predetermined.Specific division mode is true according to practical application scene
Fixed, the embodiment of the present invention is not construed as limiting.
Step 103: the ambient light illumination that the ambient light illumination got for this is got with the last time is not same
The backlight illumination of the display area is adjusted to this ambient light illumination got by the display area within the scope of ambient light illumination
The corresponding backlight illumination of ambient light illumination range at place, and the display according to backlight illumination adjusted to the display area
The gray-scale intensity of each pixel of image is calibrated.
The corresponding relationship of the backlight illumination that display screen may be adjusted to and ambient light illumination range is stored in advance, preferably,
It can be stored in a tabular form.
The above method passes through the ambient light illumination for obtaining each display area of display screen, according to ambient light illumination range pair
The grade answered determines that the ambient light illumination grade of which display area is changed compared with last time gets, with regard to basis
The corresponding relationship of ambient light illumination range and backlight illumination carries out backlight illumination adjustment to the changed display area, so
It is calibrated afterwards according to gray-scale intensity of the backlight illumination adjusted to each pixel of the display image of the display area, from
And brightness of display screen adjust automatically is realized, and be operated manually without using person, to reduce to display operation
Complexity.In addition, the brightness of adjust automatically display screen, is divided into multiple display areas especially by by display screen, according to not
It is different with the ambient light illumination of display area, the backlight illumination of display screen can be adjusted with subregion and shows each pixel of image
Gray-scale intensity, ensure that the brightness of display meets dicom standard, reach the best visual effect.
Preferably, bright according to grayscale of the backlight illumination adjusted to each pixel of the display image of the display area
Degree calibrated, can with but be not limited only to include following two implementation:
The first implementation:
According to display area backlight illumination adjusted and pre-set minimum gray brightness, based on medical digital at
As communication standard, determine that the corresponding Digital imaging in medicine standard of grayscale of each pixel of the display image of the display area is bright
Degree；
The grayscale that the gray-scale intensity of each pixel of the display image of the display area is adjusted to each pixel is corresponding
DICOM brightness.
Second of implementation:
The corresponding display look-up table (LUT, look-up-table) of display area backlight illumination adjusted is searched, really
The corresponding DICOM brightness of grayscale of each pixel of the display image of the fixed display area, thus by the display of the display area
The gray-scale intensity of each pixel of image is adjusted to the corresponding DICOM brightness of grayscale of each pixel；LUT is according to this acquisition
The corresponding backlight illumination of ambient light illumination range and pre-set minimum gray brightness where the ambient light illumination arrived is preparatory
Determining.
Wherein it is possible to each display area respectively corresponds a minimum gray brightness, it can also all display areas correspondences
One identical minimum gray brightness.
Wherein, each ambient light illumination range corresponds to a LUT；Since ambient light illumination range and display screen can be adjusted
The backlight illumination saved corresponds, so each backlight illumination corresponds to a LUT.
Preferably, LUT can be determined in the following manner:
The corresponding relationship for determining the backlight illumination that ambient light illumination range and display screen may be adjusted to, can according to display screen
With the backlight illumination being adjusted to and pre-set minimum gray brightness, determine each grayscale that the display screen can be shown each
Corresponding Digital imaging in medicine normal brightness within the scope of a ambient light illumination, and be stored in LUT.
The front end display brightness and backlight illumination of display screen have determining one-to-one relationship, therefore, according to environment light
The corresponding relationship of the display brightness of illumination range and display screen, can determine the backlight illumination of ambient light illumination range and display screen
Corresponding relationship, conversely, also set up, the two is relationship of equal value.
Thus, according to the corresponding backlight illumination (display brightness) of each ambient light illumination range and pre-set minimum ash
Rank brightness can determine corresponding DICOM brightness of each grayscale of display screen within the scope of the ambient light illumination, in turn respectively
It forms the corresponding LUT(of each backlight illumination and is referred to as the corresponding LUT of each ambient light illumination range).
Backlight illumination is corresponded to according to each ambient light illumination range and pre-set minimum gray is bright preferably, above-mentioned
Degree determines the corresponding Digital imaging in medicine normal brightness of grayscale of each pixel of the display image of the display area, specifically may be used
To include:
By the corresponding display brightness L of each ambient light illumination rangemaxWith minimum gray brightness LminSubstitute into GSDF function
Inverse function calculates the corresponding JND index j of eachmaxAnd jmin(LmaxCorresponding jmax, LminCorresponding jmin), such as formula (one) institute
Show:
J (L)=A+BLog10(L)+C·(Log10(L))2+D·(Log10(L))3+E·(Log10(L))4+ formula (one)
F·(Log10(L))5+G·(Log10(L))6+H·(Log10(L))7+I·(Log10(L))8
Wherein, A=71.498068, B=94.593053, C=41.912053, D=9.8247004, E=0.28175407, F=-
1.1878455, G=- 0.18014349, H=0.14710899, I=- 0.017046845.It can determine that display screen can be shown therewith
The corresponding JND index of each grayscale shown, such as formula (two):
Formula (two)
Wherein, P is grayscale value, and j (p) is the corresponding JND value of grayscale p, and N indicates the digit that display screen is shown.Display screen
The digit of display refers to the color or gray scale depth that display screen can be shown, uses binary representation.General common is shown
Show for device, may only show 8 depth, i.e., so-called 8bit screen can show 256 grayscale；It is aobvious for the medical treatment of profession
Show for device, the digit that display screen is shown is usually 10, i.e., so-called 10bit screen can show 1024 grayscale.
Then according to the data being calculated above, it is bright that DICOM corresponding to each grayscale is calculated by GSDF function
Degree, specific as shown in formula (three):
Formula (three)
Wherein, the unit of L is cd/m2, j is the index value of JND, a=- 1.3011877, b=- 2.5840191E-2, c=
8.0242636E-2, d=- 1.0320229E-1, e=1.3646699E-1, f=2.8745620E-2, g=- 2.5468404E-2, h
=-3.1978977E-3, k=1.2992634E-4, m=1.3635334E-3.
Above-mentioned formula (one), formula (two) and formula (three) are equally applicable to determine the display image of each display area
The corresponding Digital imaging in medicine normal brightness of the grayscale of each pixel, specific implementation process and above-mentioned according to each ambient light illumination
The corresponding display brightness of range and pre-set minimum gray brightness determine each grayscale that the display screen can be shown each
The detailed process of corresponding Digital imaging in medicine normal brightness is similar within the scope of a ambient light illumination, and the embodiment of the present invention is no longer superfluous
It states.
Based on inventive concept same as embodiment of the method, the embodiment of the invention also provides a kind of control brightness of display screen
Device, as shown in Fig. 2, the device includes:
Acquiring unit 201, the ambient light illumination of each display area for obtaining display screen, display screen are divided at least
Two display areas；
Judging unit 202, for judging ambient light illumination and upper one that this gets respectively for each display area
Whether the secondary ambient light illumination got is within the scope of same ambient light illumination；
Adjustment unit 203, ambient light illumination and the last ambient light illumination got for being got for this
The backlight illumination of the display area is adjusted to this ring got by the not display area within the scope of same ambient light illumination
The corresponding backlight illumination of ambient light illumination range where the illuminance of border；And according to backlight illumination adjusted by the viewing area
The gray-scale intensity of each pixel of the display image in domain is calibrated.
Above-mentioned apparatus passes through the ambient light illumination for obtaining each display area of display screen, according to ambient light illumination range pair
The grade answered determines that the ambient light illumination grade of which display area is changed compared with last time gets, with regard to basis
The corresponding relationship of ambient light illumination range and backlight illumination carries out backlight illumination adjustment to the changed display area, so
The gray-scale intensity of each pixel of the display image of the display area is calibrated according to backlight illumination adjusted afterwards, from
And automatic adjustment brightness of display screen is realized, and be operated manually without using person, to reduce to display operation
Complexity.In addition, the brightness of adjust automatically display screen, is divided into multiple display areas especially by by display screen, according to not
It is different with the ambient light illumination of display area, the backlight illumination of display screen can be adjusted with subregion and shows each pixel of image
Gray-scale intensity, ensure that the brightness of display meets dicom standard, reach the best visual effect.
Preferably, the device of above-mentioned control brightness of display screen further includes determination unit:
Determination unit, for bright according to above-mentioned display area backlight illumination adjusted and pre-set minimum gray
Degree determines the corresponding DICOM brightness of grayscale of each pixel of the display image of the display area；
Adjustment unit 203 is also used to, and the gray-scale intensity of each pixel of the display image of the display area is adjusted separately
For the corresponding DICOM brightness of grayscale of each pixel.
Preferably, the device of above-mentioned control brightness of display screen further includes determination unit:
Determination unit determines that this is aobvious for searching the corresponding display look-up table of display area backlight illumination adjusted
Show the corresponding Digital imaging in medicine normal brightness of grayscale of each pixel of the display image in region；
Adjustment unit, for the gray-scale intensity of each pixel of the display image of the display area to be adjusted to each pixel
The corresponding Digital imaging in medicine communication standard brightness of grayscale；The display look-up table is the ambient light illumination institute obtained according to this
The corresponding backlight illumination of ambient light illumination range and pre-set minimum gray brightness it is predetermined.
Details are not described herein with content duplicate in embodiment of the method in apparatus of the present invention embodiment.
Based on inventive concept same as embodiment of the method, the present invention also provides a kind of medical displays, such as Fig. 3 institute
Show, which includes display screen 301, which includes display panel and backlight module, display panel and back
Box is arranged in optical mode group.Display panel is divided into N number of display area, and backlight module includes corresponding with N number of display area
N number of luminescence component, i.e. the display screen is divided into N number of part.N number of illumination is provided in the front housing 302 of the display screen 301 to pass
Sensor 303(N >=2), wherein each display area is correspondingly arranged an illuminance transducer 303, is detected by illuminance transducer 303
The ambient light illumination of corresponding display area.The front housing 302 of display screen 301, refers to for encapsulated liquid crystal panel and backlight module
A pair of of shell in, close to liquid crystal display panel side shell.Medical display further includes central processing control module 304, backlight
Mould group drive module 305 and display panel drive module 306.Wherein, central processing control module 304 can be by the scene FPGA(
Gate array can be write) it realizes, can also be by SoC(system on chip) realize, the device of above-mentioned control display brightness can be in
Processing and control module 304 is entreated to realize.
Central processing control module 304 is the control centre of entire medical display, is responsible for obtaining N number of illuminance transducer
303 ambient light illuminations detected judge the ambient light illumination and last time that this gets for each display area respectively
Whether the ambient light illumination got is within the scope of same ambient light illumination.
The ambient light illumination and the last ambient light illumination sent got for this is in same ambient light illumination model
Enclose interior display area, the corresponding grayscale of each pixel of the display image of the backlight illumination and display area of the display area
Brightness remains unchanged.
The ambient light illumination that the ambient light illumination and last time got for this is got is not in an ambient light illumination
Display area in range, the ambient lighting where the ambient light illumination that central processing control module 304 is got according to this
The corresponding backlight illumination of range is spent, and sends first to backlight module drive module 305 by backlight module drive module 305
Signal is controlled, which is used to indicate backlight module drive module 305 corresponding luminous group to above-mentioned display area
Part outputting drive voltage.Backlight module drive module 305 passes through the analysis control signal after receiving the first control signal, really
Orient the voltage value that the corresponding luminescence component in above-mentioned display area needs to export.And to the corresponding luminescence component in above-mentioned display area
Corresponding voltage is exported, the backlight illumination of above-mentioned display area is controlled using the voltage；Central processing control module 304 is determined
The corresponding DICOM brightness of grayscale of each pixel of display image in the display area, and to controlling the display panel driving mould
Block 306 sends second control signal, which is used to indicate display panel drive module 306 on the display panel
Corresponding display area outputting drive voltage.Display panel drive module 306 passes through analysis after receiving the second control signal
The control signal determines the pixel and the display area for needing to adjust the corresponding display panel in display area of gray-scale intensity
It shows the corresponding DICOM brightness of grayscale of each pixel of image, determines and need to the corresponding display panel in the display area
The voltage value of each pixel output, and corresponding load is exported to each pixel of the corresponding display panel in the display area
Voltage makes display panel show corresponding DICOM brightness in the corresponding pixel in display area for needing to adjust gray-scale intensity, and
So that display panel is remained unchanged in the gray-scale intensity of the image of other display areas.
Preferably, above-mentioned display panel is liquid crystal display panel.Preferably, display screen is directly-down liquid crystal display screen.
Based on above-mentioned any medical display embodiment, preferably, above-mentioned backlight module drive module setting has and shines
The one-to-one output interface of component.So backlight module drive module receives the first control that central processing control module is sent
After signal processed, the first control signal is analyzed, determines the voltage value for needing to export to the corresponding luminescence component in above-mentioned display area.
And corresponding voltage is exported to the corresponding luminescence component in above-mentioned display area by the corresponding output interface of the luminescence component.
Preferably, central processing control module 304 determines the ash of each pixel of the display image in the display area
The corresponding DICOM brightness of rank specifically but is not limited only to include following two implementation:
The first implementation:
According to the backlight illumination adjusted of the display area and pre-set minimum gray brightness, it is based on medical digital
Imaging communication standard determines the corresponding DICOM brightness of gray-scale intensity of each pixel of the display image of the display area；Preferably
, the minimum gray brightness that the display screen of the medical display can be shown can be set when medical display dispatches from the factory.
Second of implementation:
The corresponding display look-up table (LUT, look-up-table) of display area backlight illumination adjusted is searched, really
Determine the corresponding DICOM brightness of grayscale of each pixel of the display image of display area, LUT is the environment got according to this
The corresponding backlight illumination of ambient light illumination range and pre-set minimum gray brightness where illuminance is predetermined.
Preferably, the minimum gray brightness that the medical display can be shown can be set when medical display dispatches from the factory.
For identical part in the content and method embodiment in medical display embodiment, the embodiment of the present invention is herein
It repeats no more.
Below with reference to specific example, embodiments of the present invention is further illustrated.
Six illuminance transducers are set in medical display.LED display is divided into six display areas simultaneously, often
The corresponding illuminance transducer in a display area, can indicate the corresponding relationship between them with number.The display of display screen is bright
Adjusting range is spent in 300cd/m2To 500cd/m2, then from 300cd/m2To 500cd/m2Determine 11 display brightness grades,
300cd/m2For minimum display brightness grade, every 20cd/m2One display brightness grade, 500cd/m are set2It is shown for highest
Brightness degree.It is 11 grades that ambient light illumination range, which is also divided into, be less than the lux 100lx() ambient light illumination range
Corresponding to 300cd/m2Display brightness, ambient light illumination range 100-200lx correspond to 320cd/m2Display brightness, according to this
Analogize, ambient light illumination range 900-1000lx corresponds to 480cd/m2Display brightness, the ambient light illumination greater than 1000lx
Range corresponds to 500cd/m2Display brightness, be shown in Table 1.
It can be set at regular intervals, central processing control module can obtain primary each illuminance transducer and detect
Ambient light illumination, such as 30 minutes.Rate range locating for each display area ambient light illumination that calculating is got, and for
The ambient light illumination that each display area gets this is compared with the ambient light illumination that last time gets, and judgement is each
Whether the ambient light illumination of display area has occurred the variation of crossgrade range, for the viewing area of crossgrade variation has occurred
Domain, the ambient light illumination that this can be received, which stores, to be used standby next time, and adjusts the backlight illumination of the display area
It is calibrated with the gray-scale intensity of each pixel of the display image to the display area, for the aobvious of crossgrade variation does not occur
Show region, the gray-scale intensity of each pixel of the backlight illumination and display image of the display area remains unchanged, if judgement is all
Crossgrade variation does not occur for the ambient light illumination of display area, then is directly entered next waiting period, obtains after waiting 30 minutes
Remove the ambient light illumination that primary each illuminance transducer detects each display area.
Table 1
| Ambient light illumination (X) | X < 100 | 100≤X < 200 | 200≤X < 300 | 300≤X < 400 |
| Display brightness (Y) | 300 | 320 | 340 | 360 |
| Ambient light illumination (X) | 400≤X < 500 | 500≤X < 600 | 600≤X < 700 | 700≤X < 800 |
| Display brightness (Y) | 380 | 400 | 420 | 440 |
| Ambient light illumination (X) | 800≤X < 900 | 900≤X < 1000 | X≥1000 | — |
| Display brightness (Y) | 460 | 480 | 500 | — |
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (5)
1. a kind of method for the brightness of display screen for controlling medical display characterized by comprising
The ambient light illumination of each display area of display screen is obtained, the display screen is divided at least two display areas；
For each display area, the ambient light illumination and the last ambient light illumination got that this gets are judged respectively
Whether within the scope of same ambient light illumination；
The ambient light illumination and the last ambient light illumination got got for this be not in same ambient light illumination model
Enclose interior display area, the environment backlight illumination of the display area being adjusted to where the ambient light illumination that this gets
The corresponding backlight illumination of illuminance range, and each of image is shown to the display area according to backlight illumination adjusted
The gray-scale intensity of pixel is calibrated；
Wherein, it is described according to backlight illumination adjusted to the display area display image each pixel gray-scale intensity
It is calibrated, is specifically included:
According to display area backlight illumination adjusted and pre-set minimum gray brightness, the display area is determined
Display image each pixel the corresponding Digital imaging in medicine communication standard brightness of grayscale；By the display of the display area
The gray-scale intensity of each pixel of image adjust separately for the corresponding Digital imaging in medicine communication standard of grayscale of each pixel it is bright
Degree；Or
The corresponding display look-up table of display area backlight illumination adjusted is searched, determines the display image of display area
The corresponding Digital imaging in medicine normal brightness of the grayscale of each pixel, by each pixel of the display image of the display area
Gray-scale intensity is adjusted to the corresponding Digital imaging in medicine communication standard brightness of grayscale of each pixel；The display look-up table is root
The corresponding backlight illumination of ambient light illumination and pre-set minimum gray where the ambient light illumination got according to this is bright
It spends predetermined.
2. a kind of device for the brightness of display screen for controlling medical display characterized by comprising
Acquiring unit, the ambient light illumination of each display area for obtaining display screen, the display screen are divided at least two
A display area；
Judging unit, for judging that the ambient light illumination that this is detected is detected with the last time respectively for each display area
Ambient light illumination whether within the scope of same ambient light illumination；
Adjustment unit, the ambient light illumination that the ambient light illumination for getting for this is got with the last time is not same
The backlight illumination of the display area is adjusted to this ambient lighting got by the display area within the scope of ambient light illumination
The corresponding backlight illumination of ambient light illumination range where spending；And the display area is shown according to backlight illumination adjusted
The gray-scale intensity of each pixel of diagram picture is calibrated；
Determination unit is used for according to display area backlight illumination adjusted and pre-set minimum gray brightness, really
The corresponding medical imaging communication standard brightness of grayscale of each pixel of the display image of the fixed display area；By the display
The gray-scale intensity of each pixel of the display image in region adjusts separately the corresponding Digital imaging in medicine of grayscale for each pixel
Communication standard brightness；Or for searching the corresponding display look-up table of display area backlight illumination adjusted, determine display
The corresponding Digital imaging in medicine normal brightness of grayscale of each pixel of the display image in region；By the display of the display area
The gray-scale intensity of each pixel of image is adjusted to the corresponding Digital imaging in medicine communication standard brightness of grayscale of each pixel；Institute
State display look-up table be the corresponding backlight illumination of ambient light illumination range where the ambient light illumination got according to this and
Pre-set minimum gray brightness is predetermined.
3. a kind of medical display characterized by comprising
Display screen, the display screen include display panel and backlight module；The display panel is divided at least two displays
Region；The backlight module includes and the one-to-one luminescence component in the display area；
Display panel drive module is used for the display panel outputting drive voltage, to control the display panel display figure
Picture；
Backlight module drive module, for respectively to each luminescence component outputting drive voltage, with control each luminescence component to
Corresponding display area projects bias light；
The illuminance transducer being arranged in a one-to-one correspondence with each display area, for measuring the ambient lighting of corresponding display area
Degree；
Central processing control module, the ambient light illumination measured for obtaining each illuminance transducer, and judge each illumination
Whether the ambient light illumination that this ambient light illumination got of sensor is got with the last time is in same ambient light illumination model
In enclosing；The ambient light illumination and the last ambient light illumination got got for this be not in same ambient light illumination model
The interior corresponding display area of illuminance transducer is enclosed, Xiang Suoshu backlight module drive module exports first control signal, indicates institute
Backlight module drive module is stated to the corresponding luminescence component outputting drive voltage in the display area, projects the luminescence component
It is corresponding that backlight illumination to the display area is adjusted to the ambient light illumination range where the ambient light illumination that this gets
Backlight illumination, and to the display panel drive module export second control signal, indicate the display panel drive module
To the display area outputting drive voltage of the display panel, so that each pixel of the display image of the display area
Gray-scale intensity calibrated.
4. medical display according to claim 3, it is characterised in that:
The display panel is liquid crystal display panel.
5. medical display according to claim 3 or 4, which is characterized in that the backlight module drive module setting has
With the one-to-one output interface of luminescence component.
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| CN105825836B (en) * | 2016-02-26 | 2018-11-30 | 维沃移动通信有限公司 | A kind of automatic backlight adjusting method and mobile terminal |
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