CN105844597B - The setting contrast method and system of image - Google Patents
The setting contrast method and system of image Download PDFInfo
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- CN105844597B CN105844597B CN201610195909.6A CN201610195909A CN105844597B CN 105844597 B CN105844597 B CN 105844597B CN 201610195909 A CN201610195909 A CN 201610195909A CN 105844597 B CN105844597 B CN 105844597B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/73—Deblurring; Sharpening
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10116—X-ray image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10132—Ultrasound image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
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Abstract
The invention discloses a kind of setting contrast method and system of image.According to the method, the system is based on preset gamma value, the gray value of acquired each pixel of image information is carried out gamma transformation, and transformed gamma intensity profile is shown in display area；Based on region shared by the adjustable window being obtained from the display area, the parts of images that gray value transformed in described image information falls into the adjustable window is shown.The present invention can provide the solution that image grayscale can be adjusted flexibly for operator, and clear image can not be provided for the problem that different lesions positions for doctor by thus solving operator.
Description
Technical field
The present embodiments relate to a kind of setting contrast method of image data processing technique more particularly to image and it is
System.
Background technique
Obtain inside of human body image using ray/ultrasonic device, be doctor determine lesion, check the state of an illness conventional means it
One.In order to clearly show image, the processing equipment being connected with ray/ultrasonic device can carry out enhancing contrast to image
Processing.Currently, operator need to be according to the requirement of doctor, operation ray/super in order to improve ray/ultrasonic device utilization rate
Acoustic equipment takes pictures to the different parts of patient.Processing equipment is according to unified enhancing processing technique to acquired image
Carry out enhancing contrast processing.
However in practical applications, each not phase of influence of position, body fat, the bone density etc. of taking pictures to image definition
Together.This makes different images after unified enhancing processing technique processing, it would still be possible to can not clearly show the disease that doctor wants to see
Stove image, to affect the diagnosis of doctor.Therefore, it in order to meet the different demands of doctor, needs to change the prior art
Into.
Summary of the invention
The present invention provides a kind of setting contrast method and system of image, and figure can not be adjusted flexibly to solve processing equipment
The problem of image contrast.
In a first aspect, the embodiment of the invention provides a kind of setting contrast methods of image, comprising: be based on preset gal
The gray value of acquired each pixel of image information is carried out gamma transformation by horse value, and by transformed gamma intensity profile
It is shown in display area；It, will be in described image information based on region shared by the adjustable window being obtained from the display area
The parts of images that transformed gray value falls into the adjustable window is shown.
Second aspect, the embodiment of the invention also provides a kind of setting contrast systems of image, comprising: gamma transformation mould
The gray value of acquired each pixel of image information is carried out gamma transformation, and will become for being based on preset gamma value by block
Gamma intensity profile after changing is shown in display area；Display module, for based on be obtained from the display area can
Region shared by window is adjusted, the parts of images that gray value transformed in described image information falls into the adjustable window is shown
Show.
The present invention by the setting contrast method and system of image, by provided for operator adjust window width and window position,
The man-machine interaction modes such as gamma value provide the solution that image grayscale can be adjusted flexibly for operator, thus solve
Operator can not provide clear image for the problem that different lesions positions for doctor.
Detailed description of the invention
Fig. 1 is the flow chart of the setting contrast method of the image in the embodiment of the present invention one；
Fig. 2 is the flow chart that step S110 is operated in the setting contrast method of the image in the embodiment of the present invention two；
Fig. 3 is the structural schematic diagram of the setting contrast system of the image in the embodiment of the present invention three；
Fig. 4 is the structural representation of gamma transformation module in the setting contrast system of the image in the embodiment of the present invention three
Figure.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is the flow chart of the setting contrast method for the image that the embodiment of the present invention one provides, and the present embodiment is applicable
In for doctor's very high the case where image grayscale is adjusted flexibly, this method can by with ray/ultrasonic device connection or communicate
The processing equipment of connection executes, wherein the processing equipment includes but is not limited to: computer equipment etc..The processing equipment
In adjustment system is installed.The adjustment system executes the display methods by executing following steps.
Step S110, it is based on preset gamma value, the gray value of acquired each pixel of image information is subjected to gamma
Transformation, and transformed gamma intensity profile is shown in display area.
Here, being preset with gamma transformation function in the adjustment system:Wherein, γ is preset
Gamma value, I are the gray value of pixel in image information, ImaxFor the maximum gradation value in image information.
The gamma value can be preset fixed value.The adjustment system will acquire and penetrate certainly according to preset gamma value
The gray scale of each pixel in line/ultrasonic device image information substitutes into above-mentioned gamma transformation function one by one, and obtains transformed
Gray value counts transformed gray value, obtains gamma intensity profile, and the gamma gray scale of described image information is divided
Cloth is shown in preset display area.Wherein, the display area can be located at the lower zone at entire interface.Wherein, described
Adjustment system can show obtained gamma intensity profile in display area according to the form of histogram.Wherein, the gal
The formula of horse curve isThe maximum of pixel number corresponding to same gray value in c representative image information
Value, ImaxIt is the maximum value gray scale of each pixel in image information, i is gray scale variable in image information, and γ is preset gamma
Value.
In a kind of preferred embodiment, the gamma value can also be manually adjusted by operator, for this purpose, the adjustment system exists
It is additionally provided with the adjustment section of the gamma value of prompt user's adjustment in the display area, corresponding gamma is obtained based on user's operation
Value, and using acquired gamma value as preset gamma value.
Specifically, the adjustment system can first according to preset gamma value obtain image information gamma intensity profile and
Gamma curve, and in different colors, and/or overlapping be shown in the display area.Operator is using mouse/touch screen in institute
It states and adjusts preset gamma value in the adjustment region of display area, then the adjustment system obtains gamma value adjusted, and presses
Gamma transformation is carried out to each gray value of image information again according to acquired gamma value, and updates shown gamma gray scale point
Cloth.
Here, the adjustment region can be the slider bar plug-in unit at the left side side frame of the display area,
The adjustment system presets the adjustable extent of the adjustment region and the corresponding of gamma value section is closed according to preset precision
System, when operator adjusts the sliding block on slider bar plug-in unit, after the adjustment system determines adjustment according to preset corresponding relationship
Gamma value, according still further to the transformed gamma intensity profile of above-mentioned gamma transformation formula real-time update image information.In this way, energy
Gamma value is adjusted for the actual conditions (such as take pictures position, fat) of different shooting human bodies and human body convenient for operator,
And then obtain different gamma intensity profile.
While showing gamma intensity profile, the adjustment system can also be by original image information and through gamma transformation
Image information ratio afterwards is opposite to be shown in the display area.For example, the adjustment system shows two images information side by side
Show in the image display area above the display area.
It step S120, will be in described image information based on region shared by the adjustable window being obtained from the display area
The parts of images that transformed gray value falls into the adjustable window is shown.
Here, when obtaining gamma intensity profile, it is wide to obtain the occupied gray scale of gamma intensity profile for the adjustment system
Degree, and adjustable window is set according to acquired gray scale width, it take acquired gray scale width as the window width and window of adjustable window
Position, the display by the image information after gamma transformation without omission is in image display area.
The slider bar of the also default window width and window position there are two for adjusting the adjustable window of the adjustment system.Operation
Member can adjust two slider bars according to actual photographed image.The adjustment system can according to determined by the two slider bars
Adjust window window width and window position, by be less than the adjustable window gamma gray value be set as minimum gray value, will be greater than it is described can
The gamma gray value of window is adjusted to be set as gray scale maximum value.Then, the adjustment system will be fallen into described image information it is described can
The parts of images of window is adjusted to be shown with the gray value in the gamma intensity profile.
For example, the minimum gray value of the adjustment systemic presupposition is 0, gray scale maximum value is 255.The adjustment system
According to operator adjustable window adjusted window width and window position, retain pixel in image information after gamma transformation
It is less than the adjustable window in the gray value of the adjustable window, and by the gray value of pixel in transformed image information
It is adjusted to 0, will be greater than the adjustable window is adjusted to 255, and transformed image information display is shown in image
In region.
The technical solution of the present embodiment, by providing the adjustment human-computer interactions side such as window width and window position, gamma value for operator
Formula, the solution that image grayscale can be adjusted flexibly is provided for operator, and thus solving operator can not be for difference
Lesions position, the problem of providing clear image for doctor.
Embodiment two
Fig. 2 is the flow chart of step S110 operation in the setting contrast method of image provided by Embodiment 2 of the present invention.
Unlike foregoing embodiments, in order to reduce each grey scale pixel value of image information gamma transformation calculation amount, the step
Rapid S110 includes: S111, S112.
In step S111, the original gradation distribution of acquired each pixel of image information is counted.
Here, the mode of grey level histogram can be used in the adjustment system, by each pixel of the image information counted
Original gradation distribution is shown in the display area, and two intensity profile are compared so that operator is subsequent, meanwhile, it is based on
Obtained original gradation distribution, executes step S112.
In step S112, it is based on preset gamma value, each gray value in the original gradation counted distribution is carried out
Gamma transformation, and transformed gamma intensity profile is shown in display area.
Specifically, the adjustment system is not to carry out gamma transformation to the gray value of each pixel in image information,
But gamma transformation is carried out according to the corresponding gray value of original gradation distribution, and obtain corresponding gamma intensity profile.Here,
The adjustment system in such a way that the corresponding gray value of original gradation distribution carries out gamma transformation with foregoing embodiments institute
The mapping mode stated is identical, and this will not be detailed here.
In a preferred embodiment, the step S112 further include: step S1121, S1122.(being unillustrated)
Step S1121, it is based on preset gamma value, all gamma gray values after calculating all gray values and gamma transformation
Between discrete contrast table.
Here, the adjustment systemic presupposition has discrete grey's value of full tonal range, and according to preset gamma value, to from
Scattered gray value carries out gamma transformation one by one, obtains gamma gray value, and accepted or rejected according to default precision, so obtains for complete
Discrete contrast table in tonal range between all discrete grey's values and all gamma gray values.Believe when getting piece image
Breath, and determine that the adjustment system executes step S1122 using the discrete contrast table when presetting gamma value.
Step S1122, according to the discrete contrast table, each gray value in the original gradation counted distribution is subjected to gal
Horse transformation, and transformed gamma intensity profile is shown in display area.
Specifically, the adjustment system by the original gradation counted distribution in each gray value one by one with it is described discrete right
It is matched according to each gray value in table, to obtain corresponding gamma gray value, and corresponding gamma intensity profile is shown
In display area.
Here, the adjustment system can be according to the corresponding relationship in preset each original gradation section and discrete contrast table, really
Gamma gray value corresponding to each gray value in fixed counted original gradation distribution, then corresponding gamma intensity profile is shown
Show in display area.
For example, the adjustment system is according to formula:Calculate current gamma value
Under, original gray value-gamma gray value discrete contrast table of full tonal range.Wherein h is original histogram, and h' is after converting
Histogram.
Then, the adjustment system is according to above-mentioned formula, by formula:WithIt is repaired
Change, obtain:Wherein, Lut (j)=i.
Then, adjustment mode of the adjustment system according to operator in the display area, to each picture of image information
The gray value of vegetarian refreshments is adjusted, to achieve the purpose that flexible, good to provide fluoroscopy images for doctor.
Embodiment three
Fig. 3 show the structural schematic diagram of the setting contrast system of the image of the offer of the embodiment of the present invention three.This implementation
Example was applicable to as doctor's very high the case where image grayscale is adjusted flexibly, which may be mounted at sets with ray/ultrasound
In the processing equipment of reserve line connection or communication connection.Wherein, the processing equipment includes but is not limited to: computer equipment etc..
The adjustment system 1 includes: gamma transformation module 11, display module 12.
The gamma transformation module 11 is used to be based on preset gamma value, by the ash of acquired each pixel of image information
Angle value carries out gamma transformation, and transformed gamma intensity profile is shown in display area.
Here, being preset with gamma transformation function in the gamma transformation module 11:Wherein, γ is
Preset gamma value, I are the gray value of pixel in image information, ImaxFor the maximum gradation value in image information.
The gamma value can be preset fixed value.The gamma transformation module 11 will be obtained according to preset gamma value
The gray scale for each pixel being derived from ray/ultrasonic device image information substitutes into above-mentioned gamma transformation function one by one, and is become
Gray value after changing counts transformed gray value, obtains gamma intensity profile, and by the gamma of described image information
Intensity profile is shown in preset display area.Wherein, the display area can be located at the lower zone at entire interface.Its
In, the gamma transformation module 11 can show obtained gamma intensity profile in display area according to the form of histogram
In.Wherein, the formula of the gamma curve isIn c representative image information corresponding to same gray value
The maximum value of pixel number, ImaxIt is the maximum value gray scale of each pixel in image information, i is gray scale variable in image information, γ
For preset gamma value.
In a kind of preferred embodiment, the gamma value can also be manually adjusted by operator, for this purpose, the gamma transformation mould
Block 11 is additionally provided with the adjustment section of the gamma value of prompt user's adjustment in the display area, is obtained and is corresponded to based on user's operation
Gamma value, and using acquired gamma value as preset gamma value.
Specifically, the gamma transformation module 11 first can obtain the gamma gray scale of image information according to preset gamma value
Distribution and gamma curve, and in different colors, and/or overlapping be shown in the display area.Operator utilizes mouse/touching
Screen adjusts preset gamma value in the adjustment region of the display area, then the gamma transformation module 11 obtains adjusted
Gamma value, and gamma transformation is carried out to each gray value of image information again according to acquired gamma value, and shown by update
Gamma intensity profile.
Here, the adjustment region can be the slider bar plug-in unit at the left side side frame of the display area,
The gamma transformation module 11 presets adjustable extent and the gamma value section of the adjustment region according to preset precision
Corresponding relationship, when operator adjusts the sliding block on slider bar plug-in unit, the gamma transformation module 11 is according to preset corresponding pass
System determines gamma value adjusted, according still further to the transformed gamma gray scale of above-mentioned gamma transformation formula real-time update image information
Distribution.In this way, can be convenient for operator for the actual conditions (such as take pictures position, fat) of different shooting human bodies and human body
Gamma value is adjusted, and then obtains different gamma intensity profile.
While showing gamma intensity profile, the gamma transformation module 11 can also be by original image information and through gal
The transformed image information ratio of horse is opposite to be shown in the display area.For example, the gamma transformation module 11 is by two width figures
It is displayed side by side in the image display area above the display area as information.
The display module 12 is used for based on region shared by the adjustable window being obtained from the display area, by the figure
As the parts of images that gray value transformed in information falls into the adjustable window is shown.
Here, the display module 12 when obtaining gamma intensity profile, obtains the occupied gray scale of gamma intensity profile
Width, and adjustable window is set according to acquired gray scale width, with window width that acquired gray scale width is adjustable window and
Window position, the display by the image information after gamma transformation without omission is in image display area.
The slider bar of the also default window width and window position there are two for adjusting the adjustable window of the display module 12.Behaviour
Work person can adjust two slider bars according to actual photographed image.The display module 12 is determined according to the two slider bars
Adjustable window window width and window position, by be less than the adjustable window gamma gray value be set as minimum gray value, will be greater than institute
The gamma gray value for stating adjustable window is set as gray scale maximum value.Then, the display module 12 will be fallen into described image information
The parts of images of the adjustable window is shown with the gray value in the gamma intensity profile.
For example, the preset minimum gray value of display module 12 is 0, gray scale maximum value is 255.The display mould
Block 12 according to operator adjustable window adjusted window width and window position, retain picture in image information after gamma transformation
Vegetarian refreshments the adjustable window gray value, and by the gray value of pixel in transformed image information be less than the adjustable window
Mouth is adjusted to 0, and will be greater than the adjustable window is adjusted to 255, and by transformed image information display in image
In display area.
The technical solution of the present embodiment, by providing the adjustment human-computer interactions side such as window width and window position, gamma value for operator
Formula, the solution that image grayscale can be adjusted flexibly is provided for operator, and thus solving operator can not be for difference
Lesions position, the problem of providing clear image for doctor.
Example IV
Fig. 4 is the structure of gamma transformation module 11 in the setting contrast system 1 for the image that the embodiment of the present invention four provides
Schematic diagram.Unlike foregoing embodiments, in order to reduce each grey scale pixel value of image information gamma transformation calculation amount,
The gamma transformation module 11 includes: statistic submodule 111, gamma transformation submodule 112.
The statistic submodule 111 is used to count the original gradation distribution of acquired each pixel of image information.
Here, the mode of grey level histogram can be used in the statistic submodule 111, by each pixel of the image information counted
The original gradation distribution of point is shown in the display area, and two intensity profile are compared so that operator is subsequent, meanwhile,
It is distributed based on obtained original gradation, executes gamma transformation submodule 112.
The gamma transformation submodule 112 is used to be based on preset gamma value, will be in the original gradation that counted distribution
Each gray value carries out gamma transformation, and transformed gamma intensity profile is shown in display area.
Specifically, the gamma transformation submodule 112 is not to carry out to the gray value of each pixel in image information
Gamma transformation, but gamma transformation is carried out according to the corresponding gray value of original gradation distribution, and obtain corresponding gamma gray scale
Distribution.Here, the gamma transformation submodule 112 carries out the side of gamma transformation according to the corresponding gray value of original gradation distribution
Formula is identical as mapping mode described in foregoing embodiments, and this will not be detailed here.
In a preferred embodiment, the gamma transformation submodule 112 is used to be based on preset gamma value, calculates all ashes
The discrete contrast table between all gamma gray values after angle value and gamma transformation；And be used for according to the discrete contrast table,
Each gray value in the original gradation counted distribution is subjected to gamma transformation, and transformed gamma intensity profile is shown
In display area.
Here, the gamma transformation submodule 112 is preset with discrete grey's value of full tonal range, and according to preset gal
Horse value carries out gamma transformation to discrete grey's value one by one, obtains gamma gray value, and accepted or rejected according to default precision, so
It obtains for the discrete contrast table in full tonal range between all discrete grey's values and all gamma gray values.When getting one
Width image information, and determine that the gamma transformation submodule 112 will be united according to the discrete contrast table when presetting gamma value
Each gray value in the original gradation distribution of meter carries out gamma transformation, and transformed gamma intensity profile is shown in viewing area
In domain.
Specifically, in the original gradation distribution that the gamma transformation submodule 112 is counted the statistic submodule 111
Each gray value matched one by one with each gray value in the discrete contrast table, to obtain corresponding gamma gray value, and
Corresponding gamma intensity profile is shown in display area.
Here, the gamma transformation submodule 112 can be according to pair in preset each original gradation section and discrete contrast table
It should be related to, determine gamma gray value corresponding to each gray value in counted original gradation distribution, then by corresponding gamma
Intensity profile is shown in display area.
For example, the gamma transformation submodule 112 is according to formula:Calculating is worked as
Under preceding gamma value, original gray value-gamma gray value discrete contrast table of full tonal range.Wherein h is original histogram, h'
For transformed histogram.
Then, the gamma transformation submodule 112 is according to above-mentioned formula, by formula:WithIt modifies, obtains:Wherein, Lut (j)=i.
Then, adjustment mode of the display module 12 according to operator in the display area, it is each to image information
The gray value of pixel is adjusted, to achieve the purpose that flexible, good to provide fluoroscopy images for doctor.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (8)
1. a kind of setting contrast method of image characterized by comprising
Based on preset gamma value, the gray value of acquired each pixel of image information is subjected to gamma transformation, and will transformation
Gamma intensity profile afterwards is shown in display area；
It is described to be based on preset gamma value, the gray value of acquired each pixel of image information is subjected to gamma transformation, and will
Transformed gamma intensity profile, which is shown in display area, includes:
The original gradation distribution of the acquired each pixel of image information of statistics；
Based on preset gamma value, each gray value in the original gradation counted distribution is subjected to gamma transformation, and will transformation
Gamma intensity profile afterwards is shown in display area；
Based on region shared by the adjustable window being obtained from the display area, by gray value transformed in described image information
The parts of images for falling into the adjustable window is shown.
2. the setting contrast method of image according to claim 1, which is characterized in that described to be based on preset gamma
The gray value of acquired each pixel of image information is carried out gamma transformation, and transformed gamma intensity profile is shown by value
Show in display area and includes:
It is equipped with the adjustment section of the gamma value of prompt user's adjustment in the display area, is obtained based on user's operation corresponding
Gamma value, and using acquired gamma value as preset gamma value.
3. the setting contrast method of image according to claim 1 or 2, which is characterized in that described to be based on preset gal
Each gray value in the original gradation counted distribution is carried out gamma transformation by horse value, and by transformed gamma intensity profile
It is shown in display area and includes:
The discrete contrast between all gamma gray values based on preset gamma value, after calculating all gray values and gamma transformation
Table；
According to the discrete contrast table, each gray value in the original gradation counted distribution is subjected to gamma transformation, and will become
Gamma intensity profile after changing is shown in display area.
4. the setting contrast method of image according to claim 1, which is characterized in that described described aobvious based on being obtained from
Show region shared by the adjustable window in region, gray value transformed in described image information is fallen into the portion of the adjustable window
Partial image is shown that the parts of images for including: the adjustable window will be fallen into described image information is divided with the gamma gray scale
Gray value in cloth is shown.
5. a kind of setting contrast system of image characterized by comprising
Gamma transformation module carries out the gray value of acquired each pixel of image information for being based on preset gamma value
Gamma transformation, and transformed gamma intensity profile is shown in display area；
The gamma transformation module, for being based on preset gamma value, by the gray value of acquired each pixel of image information
Gamma transformation is carried out, and transformed gamma intensity profile is shown in display area and includes:
Statistic submodule, for counting the original gradation distribution of acquired each pixel of image information；
Gamma transformation submodule, for be based on preset gamma value, by the original gradation counted distribution in each gray value into
Row gamma transformation, and transformed gamma intensity profile is shown in display area；
Display module will be in described image information for based on region shared by the adjustable window being obtained from the display area
The parts of images that transformed gray value falls into the adjustable window is shown.
6. the setting contrast system of image according to claim 5, which is characterized in that the gamma transformation module is used for
It is equipped with the adjustment section of the gamma value of prompt user's adjustment in the display area, corresponding gamma is obtained based on user's operation
Value, and using acquired gamma value as preset gamma value.
7. the setting contrast system of image according to claim 5 or 6, which is characterized in that the gamma transformation submodule
Block is used to be based on preset gamma value, discrete right between all gamma gray values after calculating all gray values and gamma transformation
According to table；According to the discrete contrast table, each gray value in the original gradation counted distribution is subjected to gamma transformation, and will become
Gamma intensity profile after changing is shown in display area.
8. the setting contrast system of image according to claim 5, which is characterized in that the display module is used for institute
It states and falls into the parts of images of the adjustable window in image information and shown with the gray value in the gamma intensity profile.
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| CN106485652A (en) * | 2016-10-12 | 2017-03-08 | 青岛海信电器股份有限公司 | Setting contrast method and device |
| CN109993159B (en) * | 2018-01-02 | 2023-07-25 | 上海西门子医疗器械有限公司 | Window setting method and device for image diagnosis system |
| CN108965645B (en) * | 2018-08-27 | 2020-11-10 | 沈阳火炬北泰数码科技有限责任公司 | Automatic gamma matching display method and device |
| CN109350109B (en) * | 2018-12-06 | 2022-03-04 | 北京锐视康科技发展有限公司 | Multifunctional dental scanning system |
| CN112884659B (en) * | 2019-11-29 | 2024-09-06 | 深圳市万普拉斯科技有限公司 | Image contrast enhancement method, device and display device |
| CN119494790A (en) * | 2021-11-23 | 2025-02-21 | 深圳北芯生命科技股份有限公司 | Processing method and image processing system for improving contrast of vascular ultrasound image |
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