CN101912274B - Method and corresponding device for pseudo-color conversion of all-digital ultrasonic image - Google Patents
Method and corresponding device for pseudo-color conversion of all-digital ultrasonic image Download PDFInfo
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Abstract
The invention is suitable for the technical field of ultrasonic imaging and provides a method and a corresponding device for pseudo-color conversion of an all-digital ultrasonic image. In the embodiment of the invention, a pseudo-color mapping table is generated, the imported pseudo-color mapping table is received through an import interface and black and white image data can be converted into pseudo-color image data by a table lookup method so as to more flexibly load various gray scale mapping curves comprising linear mapping curves and also load nonlinear mapping curves to make pseudo-color effect richer. When the pseudo-color mapping table is generated, a black and white image is processed by image processing software so as to achieve the target pseudo-color effect and the corresponding pseudo-color mapping table is calculated according to the target pseudo-color effect. For example, the pseudo-color mapping table can be generated by utilizing combined treatment of Photoshop software and matlab software, so that the pseudo-color mapping table is generated and better pseudo-color effect is achieved.
Description
Technical field
The invention belongs to and relate to the ultrasonic imaging technique field, relate in particular to a kind of method and related device of pseudo-color conversion of all-digital ultrasonic image.
Background technology
In the black-and-white B appearance, use image pseudo-color conversion technology can improve the discrimination ability of image.The principle of pseudo-color conversion is to be transformed into different colour codes to each different tonal gradations of gray level image according to mapping function, and image is shown with color mode, makes image level clearly demarcated, is convenient to identification.According to the colorimetry principle; Any color can be synthesized in different ratios by the red, green, blue three primary colours; Therefore; The pseudo-color functional relationship that will set three primary colours of red, green, blue earlier of handling of image makes each corresponding function that corresponding red, green, blue output all arranged, afterwards the synthetic a kind of pseudo-colours of three.In portable black-and-white B, pseudo-color the variation generally realized on hardware.The different gray levels mapping curve can produce different pseudo-color effects.
The pseudo-color conversion method that prior art is used always is: multiply each other view data with the three primary colours weight coefficient respectively, change the pseudo-color color of image through changing three cie system of color representation cie numerical value then.This scheme has in fact only adopted the linear function conversion, can only carry out Linear Mapping to three primary colours, and can not carry out nonlinear mapping, and is as shown in Figure 1.Therefore, existing scheme can not produce has the nonlinear pseudo-color effect of GTG, thereby has limited the multiformity of pseudo-coloured silk.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method of pseudo-color conversion of all-digital ultrasonic image, is intended to solve prior art and can not produces and have the nonlinear pseudo-color effect of GTG, thereby limited the multifarious problem of pseudo-coloured silk.
The embodiment of the invention is achieved in that a kind of device of pseudo-color conversion of all-digital ultrasonic image, and said device comprises:
Pseudo-color mapping table generation unit is used for calculating the color mapping table of corresponding puppet according to the pseudo-color effect of target;
Pseudo-color mapping table data importing interface is used to receive the pseudo-color mapping table data of importing;
The pseudo-color conversion unit is used for according to the color mapping table data of puppet, becomes pcolor as data the black white image data conversion of importing;
Microprocessor controller is used for the color mapping table data storage of said puppet accessing pseudo-color mapping table data to memorizer and receiving pseudo-color conversion when instruction, triggers the said pseudo-color conversion of control unit;
The display driver unit is used for driving display and shows that pcolor is as data.
Further, said pseudo-color conversion unit and display driver unit realize that through same FPGA said FPGA comprises dual port RAM, and the Lvds module that links to each other with said dual port RAM.
Further, said pseudo-color conversion unit also comprises:
R shines upon computing module, is used for after the input of black white image data, carrying out the mapping of tabling look-up of R, and obtains the value of R;
G shines upon computing module, is used for after the input of black white image data, carrying out the mapping of tabling look-up of G, and obtains the value of G;
B shines upon computing module, is used for after the input of black white image data, carrying out the mapping of tabling look-up of B, and obtains the value of B.
Further, the color mapping table generation unit of said puppet also comprises:
Logging modle is used to utilize Photoshop software that the black-and-white B Flame Image Process is become the pseudo-color effect of expection, and writes down the settings that each goes on foot Photoshop software when handling;
Black and white gray scale image generation module is used to utilize Matlab to produce a width of cloth black and white gray scale image, and said image has only delegation, 256 pixels, and the gray value of each pixel is equal with pixel address;
The new images generation module is used for importing to Photoshop to the black-white-gray figure that Matlab generates, successively according to before the settings noted, generate a width of cloth new images;
Separation module is used for importing to Matlab to said new images, from view data, isolates R, the G of image, three picture content compositions of B, and said three components have been formed pseudo-color mapping table.
Another purpose of the embodiment of the invention is to provide a kind of method of pseudo-color conversion of all-digital ultrasonic image, said method comprising the steps of:
According to the pseudo-color effect of target, calculate the color mapping table of corresponding puppet;
Obtain pseudo-color mapping table;
According to the color mapping table of said puppet, become pcolor as data the black white image data conversion that receives;
As data, driving display shows the pcolor picture according to said pcolor.
Further, after the said step of obtaining pseudo-color mapping table, also comprise step:
The color mapping table of said puppet is stored in the memorizer, when receiving the pseudo-color conversion instruction, transfer the color mapping table of said puppet again.
Further, said according to the color mapping table of said puppet, become pcolor also to comprise the black white image data conversion that receives as the step of data:
After the input of black white image data, carry out the mapping of tabling look-up of R, obtain the value of R;
After the input of black white image data, carry out the mapping of tabling look-up of G, obtain the value of G;
After the input of black white image data, carry out the mapping of tabling look-up of B, obtain the value of B.
Further, said according to the pseudo-color effect of target, calculate the color mapping table of corresponding puppet and specifically comprise:
Utilize Photoshop software that the black-and-white B Flame Image Process is become the pseudo-color effect of expection, and write down the settings that each goes on foot Photoshop software when handling;
Utilize Matlab to produce a width of cloth black and white gray scale image, said image has only delegation, 256 pixels, and the gray value of each pixel is equal with pixel address;
The black-white-gray figure that generates Matlab imports to Photoshop, successively according to before the settings noted, generate a width of cloth new images;
Import to said new images among the Matlab, from view data, isolate R, the G of image, three picture content compositions of B, said three components have been formed pseudo-color mapping table
In embodiments of the present invention, generate pseudo-color mapping table, receive the pseudo-color mapping table that imports through introducting interface; And adopt the method table look-up; Can become pcolor as data the black white image data transaction, thereby can load various GTG mapping curves more neatly, comprise linear mapping curve; Simultaneously also can load nonlinear mapping curve, make pseudo-color effect abundanter.When generating pseudo-color mapping table, utilize image processing software that black white image is processed into the pseudo-color effect of target, and, calculate the color mapping table of corresponding puppet according to the pseudo-color effect of target.For example, can utilize Photoshop software and matlab software Combined Treatment, generate pseudo-color mapping table.Like this, facilitate the generation of pseudo-color mapping table, and pseudo-color effect is better.
Description of drawings
Fig. 1 is the Linear Mapping curve synoptic diagram that pseudo-color conversion adopted that prior art provides;
Fig. 2 is the scheme block diagram of the device of the pseudo-color conversion of all-digital ultrasonic image that provides of the embodiment of the invention;
Fig. 3 is the practical implementation structure chart of the device of the pseudo-color conversion of all-digital ultrasonic image that provides of the embodiment of the invention;
Fig. 4 is the flow chart of the method for the ultrasonoscopy pseudo-color conversion that provides of the embodiment of the invention;
Fig. 5 be this bright embodiment provide according to the pseudo-color effect of target, calculate the method flow diagram of the color mapping table of corresponding puppet;
Fig. 6 is the sketch map of the pseudo-color mapping curve that provides of the embodiment of the invention.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Consult Fig. 2, show the structure of the device of the pseudo-color conversion of all-digital ultrasonic image that the embodiment of the invention provides.This all-digital ultrasonic image device not only comprises display 27, memorizer 24, also comprises: pseudo-color mapping table generation unit 21, pseudo-color mapping table data importing interface 22, pseudo-color conversion unit 25, microprocessor controller 23, display driver unit 26.
The color mapping table generation unit 21 of this puppet calculates the color mapping table of corresponding puppet according to the pseudo-color effect of target.Every kind of corresponding R of pseudo-color effect, G, the last mapping table of B.Each mapping table has 256 values, successively the mapping value of correspondence 0,1,2...255 GTG.Pseudo-color mapping table data importing interface 22 receives the pseudo-color mapping table data that import, and pseudo-color conversion unit 25 becomes pcolor as data the black white image data conversion of importing according to the color mapping table data of puppet; Microprocessor controller 23 in memorizer 24 and when receiving the pseudo-color conversion instruction, accesses pseudo-color mapping table data with the color mapping table data storage of said puppet from memorizer 24, trigger the said pseudo-color conversion of control unit 25.Display driver unit 26 driving displays 27 show that pcolor is as data.
As embodiments of the invention; After importing the color mapping table data of a plurality of puppets; Microprocessor controller 23 is stored in the pseudo-color mapping table curing of difference in the memorizer 24; The user sends the pseudo-color conversion instruction through button as required, after microprocessor controller 23 receives instruction, in the color mapping table of a plurality of puppets, selects to pass to pseudo-color conversion unit 25 under the corresponding pseudo-color mapping table.In this embodiment, the pseudo-color conversion instruction contains selection information, like this, when importing, just can import the color mapping table data of a plurality of puppets.
In order to carry out pseudo-color conversion more apace, as embodiments of the invention, this pseudo-color conversion unit 25 comprises that further R mapping computing module 251, G mapping computing module 252, B shine upon computing module 253.After the black white image data inputs, data get into this R mapping computing module 251, G mapping computing module 252, B respectively and shine upon computing module 253, carry out R, G, the B mapping of tabling look-up respectively, obtain the value of R, G, B respectively.According to the value of this R, G, B, display driver unit 26 just can show by driving display 27.
As embodiments of the invention, can adopt Photoshop software, in conjunction with Matlab software, Combined Treatment, thereby generate pseudo-color mapping table, its process can for:
Logging modle 211 utilizes Photoshop software the black-and-white B Flame Image Process to be become the pseudo-color effect of expection; And write down the settings that each goes on foot Photoshop software when handling, and black and white gray scale image generation module 212 utilizes Matlab to produce a width of cloth black and white gray scale image, and said image has only delegation; 256 pixels; And the gray value of each pixel and pixel address equate that new images generation module 213 imports to Photoshop to the black-white-gray figure that Matlab generates, successively according to before the settings noted; Generate a width of cloth new images; Separation module 214 imports to said new images among the Matlab, from view data, isolates R, the G of image, three picture content compositions of B, and said three components have been formed pseudo-color mapping table.
Consult Fig. 3, the practical implementation structure of the device of the pseudo-color conversion of all-digital ultrasonic image that provides for the embodiment of the invention, microprocessor controller adopts the arm chip, and memorizer adopts flash.The processing procedure of microprocessor controller is: behind the pseudo-color mapping table that imports each good different-effect, its curing is stored in the flash memorizer.When receiving the pseudo-color conversion instruction, the arm chip passes to the pseudo-color conversion unit to corresponding three the color mapping table data of puppet R (7downto 0), G (7downto 0), B (7downto 0) through address arm_addr.
This pseudo-color conversion unit adopts FPGA to realize, logical design adopts VHDL language to realize.The inner concrete circuit of realizing of FPGA can be consulted Fig. 4, and pseudo-color conversion cell processing process is: call the inner dual port RAM of FPGA as the mapping search part, three dual port RAMs are the blockram type.Bit wide 8bit, the degree of depth is 256.When receiving the pseudo-color conversion instruction, the arm chip is written to R primary colours table, G primary colours table, B primary colours table correspondence in three inner dual port RAMs of FPGA respectively.Black white image is read dual port RAM with its data pixel_da (7downto 0) as the dual port RAM address data; Promptly accomplish to dual port RAM addressing and table look-up, thus the R after obtaining shining upon, G, B three primary colours data R_da (7downto 0), G_da (7downto 0), B_da (7downto 0).
In the present embodiment, pseudo-color conversion unit and display driver unit all are to realize through same FPGA, and this display driver unit adopts the Lvds module to realize.After R after will shining upon, G, B three primary colours data were input in the Lvds module, the Lvds module was carried out after display timing generator handles, and resembled pcolor to be transferred to LCD display and to show.As embodiments of the invention,, be used to import the pseudo-color conversion instruction through keyboard being set as input equipment.
Fig. 5 shows the flow process of the method for the ultrasonoscopy pseudo-color conversion that the embodiment of the invention provides, and details are as follows:
In step S101,, calculate the color mapping table of corresponding puppet according to the pseudo-color effect of target.
In step S102, obtain pseudo-color mapping table.Can obtain pseudo-color mapping table through the method that interface imports data.
In step S103,, become pcolor as data the black white image data conversion that receives according to the color mapping table of this puppet.
To the transferring of the color mapping table of puppet, can when receiving the pseudo-color conversion instruction, transfer the color mapping table of this puppet more for ease earlier with storing in the memorizer by the color mapping table of puppet.Then, black-and-white image is tabled look-up in real time, obtain the value of R, G, B, accomplish pseudo-color conversion.
In step S104, as data, driving display shows the pcolor picture according to said pcolor.
Fig. 6 show that this bright embodiment provides according to the pseudo-color effect of target; Calculate the method flow of the color mapping table of corresponding puppet; In the present embodiment, mainly utilize Photoshop software and matlab software Combined Treatment to accomplish and generate pseudo-color mapping table, details are as follows:
In step S1011, utilize Photoshop software that the black-and-white B Flame Image Process is become the pseudo-color effect of expection, and write down the settings that each goes on foot Photoshop software when handling.
In step S1012, utilize Matlab to produce a width of cloth black and white gray scale image, said image has only delegation, 256 pixels, and the gray value of each pixel is equal with pixel address.
In step S1013, the black-white-gray figure that generates Matlab imports to Photoshop, successively according to before the settings noted, generate a width of cloth new images.
In step S1014, import to said new images among the Matlab, from view data, isolate R, the G of image, three picture content compositions of B, said three components have been formed pseudo-color mapping table.The curve chart that plots is as shown in Figure 6.
In sum, in embodiments of the present invention, generate pseudo-color mapping table; Receive the pseudo-color mapping table that imports through introducting interface, and adopt the method for tabling look-up, can become pcolor as data the black white image data transaction; Thereby can load various GTG mapping curves more neatly; Comprise linear mapping curve, also can load nonlinear mapping curve simultaneously, make pseudo-color effect abundanter.When generating pseudo-color mapping table, utilize image processing software that black white image is processed into the pseudo-color effect of target, and, calculate the color mapping table of corresponding puppet according to the pseudo-color effect of target.For example, can utilize Photoshop software and matlab software Combined Treatment, generate pseudo-color mapping table.Like this, facilitate the generation of pseudo-color mapping table, and pseudo-color effect is better.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. the device of a pseudo-color conversion of all-digital ultrasonic image is characterized in that, said device comprises:
Pseudo-color mapping table generation unit is used for calculating the color mapping table of corresponding puppet according to the pseudo-color effect of target;
Pseudo-color mapping table data importing interface is used to receive the pseudo-color mapping table data of importing;
The pseudo-color conversion unit is used for according to the color mapping table data of puppet, becomes pcolor as data the black white image data conversion of importing;
Microprocessor controller is used for the color mapping table data storage of said puppet accessing pseudo-color mapping table data to memorizer and receiving pseudo-color conversion when instruction, triggers the said pseudo-color conversion of control unit;
The display driver unit is used for driving display and shows pcolor as data,
The color mapping table generation unit of said puppet comprises:
Logging modle is used to utilize Photoshop software that the black-and-white B Flame Image Process is become the pseudo-color effect of expection, and writes down the settings that each goes on foot Photoshop software when handling;
Black and white gray scale image generation module is used to utilize Matlab to produce a width of cloth black and white gray scale image, and said black and white gray scale image has only delegation, 256 pixels, and the gray value of each pixel is equal with pixel address;
The new images generation module is used for importing to Photoshop to the black-white-gray figure that Matlab generates, successively according to before the settings noted, generate a width of cloth new images;
Separation module is used for importing to Matlab to said new images, from view data, isolates R, the G of image, three picture content compositions of B, and said three picture contents have been formed pseudo-color mapping table.
2
.Device according to claim 1 is characterized in that, said pseudo-color conversion unit and display driver unit realize that through same FPGA said FPGA comprises dual port RAM, and the Lvds module that links to each other with said dual port RAM.
3
.Device according to claim 1 is characterized in that, said pseudo-color conversion unit also comprises:
R shines upon computing module, is used for after the input of black white image data, carrying out the mapping of tabling look-up of R, and obtains the value of R;
G shines upon computing module, is used for after the input of black white image data, carrying out the mapping of tabling look-up of G, and obtains the value of G;
B shines upon computing module, is used for after the input of black white image data, carrying out the mapping of tabling look-up of B, and obtains the value of B.
4
.A kind of method of pseudo-color conversion of all-digital ultrasonic image is characterized in that, said method comprising the steps of:
According to the pseudo-color effect of target, calculate the color mapping table of corresponding puppet;
Obtain pseudo-color mapping table;
According to the color mapping table of said puppet, become pcolor as data the black white image data conversion that receives;
As data, driving display shows the pcolor picture according to said pcolor,
Said according to the pseudo-color effect of target, calculate the color mapping table of corresponding puppet and specifically comprise:
Utilize Photoshop software that the black-and-white B Flame Image Process is become the pseudo-color effect of expection, and write down the settings that each goes on foot Photoshop software when handling;
Utilize Matlab to produce a width of cloth black and white gray scale image, said black and white gray scale image has only delegation, 256 pixels, and the gray value of each pixel is equal with pixel address;
The black-white-gray figure that generates Matlab imports to Photoshop, successively according to before the settings noted, generate a width of cloth new images;
Import to said new images among the Matlab, from view data, isolate R, the G of image, three picture content compositions of B, said three picture contents have been formed pseudo-color mapping table.
5
.Method according to claim 4 is characterized in that, after the said step of obtaining pseudo-color mapping table, also comprises step:
The color mapping table of said puppet is stored in the memorizer, when receiving the pseudo-color conversion instruction, transfer the color mapping table of said puppet again.
6
.Method according to claim 4 is characterized in that, and is said according to the color mapping table of said puppet, becomes pcolor also to comprise as the step of data the black white image data conversion that receives:
After the input of black white image data, carry out the mapping of tabling look-up of R, obtain the value of R;
After the input of black white image data, carry out the mapping of tabling look-up of G, obtain the value of G;
After the input of black white image data, carry out the mapping of tabling look-up of B, obtain the value of B.
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| CN107578381B (en) * | 2017-08-09 | 2020-12-08 | 天津恒宇医疗科技有限公司 | Endoscopic light interference tomography color mapping method |
| US20190269380A1 (en) * | 2018-03-05 | 2019-09-05 | Edan Instruments, Inc | Blood flow displaying method, apparatus and device for ultrasonic system |
| CN111754595A (en) * | 2020-05-18 | 2020-10-09 | 成都慧视光电技术有限公司 | Method for generating specific chromaticity diagram or pseudo color mapping function according to input picture |
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| CN1504963A (en) * | 2002-11-29 | 2004-06-16 | 英华达(上海)电子有限公司 | Color display method for black and white pictures |
| CN101080024A (en) * | 2007-05-09 | 2007-11-28 | 宁波大学 | A method of processing pseudo color of medical gray image signals |
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| EP1744181B8 (en) * | 2005-07-15 | 2014-04-09 | Kabushiki Kaisha Toshiba | Ultrasonic diagnostic apparatus and ultrasonic image processing method |
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| CN1504963A (en) * | 2002-11-29 | 2004-06-16 | 英华达(上海)电子有限公司 | Color display method for black and white pictures |
| CN101080024A (en) * | 2007-05-09 | 2007-11-28 | 宁波大学 | A method of processing pseudo color of medical gray image signals |
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