CN101779965A - Digital scanning conversion method of ultrasonic data and device thereof - Google Patents
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Abstract
The invention discloses a digital scanning conversion method of ultrasonic data and a device thereof. The scanning conversion device comprises a digital signal processor (DSP), a field programmable gate array (FPGA) and a storage device, wherein the DSP is used for zoning ultrasonic echo data and finishing initialization calculation of interpolation information and a coordinate conversion mapping relationship from a right angle coordinate to a polar coordinate in each zone, the FPGA reads the ultrasonic echo data, realizes interpolation calculation of the ultrasonic echo data of each zone according to the interpolation information of the ultrasonic echo data and sends interruption signals to the DSP after interpolation is finished on all data in a zone, the DSP responds to the interruption signals, receives interpolation data and maps the interpolation data to a corresponding position in the right angle coordinate according to the coordinate mapping relationship, thereby finishing the coordinate mapping relationship of the interpolation data. The method avoids complex trigonometric function operation and coordinated rotation digital computer (CORDIC) algorithm operation, lowers the cost of a hardware system and the system resource consumption and enhances the real-time performance of an ultrasonic image system.
Description
Technical field
The invention belongs to the ultrasonic imaging technique field, what be specifically related to is a kind of digital scanning conversion method and device thereof of ultrasound data.
Background technology
In the digital ultrasound image system, the ultrasonic echo data of reception is arranged with the linear formula of polar coordinate scanner, and the display format that need be translated into rectangular coordinate could video picture on display, and this just needs to use the digital scan conversion technology.This technology comprises echo data storage, coordinate transform, three parts of interpolation calculation.
As publication number is the Chinese invention patent Shen Qing Publication description of CN101317775A, a kind of ultrasound medical imaging method of wherein openly knowing clearly based on the DSC algorithm, and to coordinate transform in the imaging system, interpolation calculation adopts the DSC algorithm; Publication number is that the patent of invention of CN101390756A has pointed out that the scanning interpolation method adopts B spline method interpolation in the ultrasonic image-forming system, has adopted the DSC chip system in the patent specification.If use special DSC chip to realize, the system cost costliness, and need buffer memory one frame ultrasonic echo data usually, and the expansion of peripheral components is also more loaded down with trivial details, and calculating process need consume great amount of hardware resources; Another cordic algorithm of the prior art can avoid the complex calculation of evolution and trigonometric function to realize coordinate transform, but this algorithm needs buffer memory one frame ultrasonic echo data, and huge initial data makes this algorithm still need to consume more hardware resource and outer extension memory resource.
Summary of the invention
In view of this, in order to address the above problem, the present invention proposes a kind of digital scanning conversion method of ultrasound data, make full use of the ability of FPGA (field programmable gate array) parallel computation and processing and the technical advantage of DSP (digital signal processor) flexible programming, algorithm is simple, has reduced the consumption of hardware resource.
The digital scanning conversion method of ultrasound data of the present invention comprises the steps:
1) the digital signal processor module is according to ultrasonography size and ultrasonic echo line, ultrasonography under the rectangular coordinate system is carried out Region Segmentation, calculate successively rectangular coordinate in each zone put polar coordinate point interpolation information, coordinate transform mapping relations information and should the zone in interpolation point quantity, and the first address and the interpolation point quantity of the interpolation information that each is regional, each REGION INTERPOLATION information store in the corresponding interpolation relevant information memory module;
2) the field programmable gate array module comprises a ultrasound echo data sub module stored, and described field programmable gate array module receives ultrasound echo data, and ultrasound echo data is stored in the ultrasound echo data sub module stored;
3) the field programmable gate array module reads ultrasound echo data, according to the area distribution of ultrasound echo data in rectangular coordinate system, in interpolation relevant information memory module, search corresponding interpolation information, and according to interpolation information, finish interpolation arithmetic, send interrupt signal to the digital signal processor module then the ultrasound echo data in a zone;
4) the digital signal processor module responds is interrupted and receiving step 2) ultrasound echo data after the interpolation in the zone of gained, according to the coordinate transform map information, be stored to the respective point of rectangular coordinate;
5) described step 2), after having stored N bundle and N+1 bundle ultrasound echo data, startup is to the storage of N+2 bundle ultrasound echo data, setting up procedure 3 simultaneously), the ultrasound echo data in N bundle and N+1 bundle echo angle zone is carried out interpolation arithmetic; Setting up procedure 4 then) this regional ultrasound echo data is carried out coordinate transform;
After the storage of N+2 bundle ultrasound echo data is finished, startup is to the storage of N+3 bundle ultrasound echo data, cover N bundle ultrasound echo data with N+3 bundle ultrasound echo data, while setting up procedure 3), the ultrasound echo data in N+1 bundle and N+2 bundle echo angle zone is carried out interpolation arithmetic; Setting up procedure 4 then) this regional ultrasound echo data is carried out coordinate transform;
As cocycle, up to interpolation and the mapping finished a frame ultrasound echo data.
Further, described step 2) in, the odd point data in each bundle ultrasound echo data are separated with the even number point data, store dual port random access memorizeies different in the ultrasound echo data sub module stored respectively into;
Further, described interpolation relevant information memory module comprises first memory, second memory and the 3rd memorizer; In the described step 1), store interpolation information into first memory, store each REGION INTERPOLATION information into second memory at the first address of first memory, the interpolation point quantity that each is regional stores the 3rd memorizer into, and coordinate transform mapping relations information stores in the digital signal processor internal storage;
Further, described interpolation information comprises that current interpolation point need read the ordinal number of echo data, and current interpolation point required vertically and the weighted information of lateral interpolation; Described interpolation information is represented that by 16bit the ordinal number that wherein needs to read echo data is represented that by high 10bit the required weighted information vertical and lateral interpolation of current interpolation point is represented with low 6bit;
Further, in the step 1), be that Region Segmentation is carried out to the ultrasonography under the rectangular coordinate system in the demarcation line with the ultrasonic echo line, every adjacent 2 bundle ultrasonic echo wire clamp angular zones are a zone.
The present invention also provides a kind of digital scan converter that is used to realize the ultrasound data of said method, comprises
The digital signal processor module, ultrasonography under the rectangular coordinate system is carried out Region Segmentation, calculate successively rectangular coordinate in every adjacent 2 bundle ultrasonic echo wire clamp angular zones put the interpolation information of polar coordinate point, coordinate transform mapping relations information and should the zone in interpolation point quantity, and interpolation information, coordinate transform mapping relations information and interpolation point quantity stored in the corresponding memory module;
The field programmable gate array module, comprise the ultrasound echo data sub module stored, described field programmable gate array module receives ultrasound echo data, ultrasound echo data is stored in the ultrasound echo data sub module stored, according to the area distribution of ultrasound echo data in rectangular coordinate system, in interpolation relevant information memory module, search corresponding interpolation information, and, finish interpolation successively each regional ultrasound echo data according to interpolation information; And
Interpolation relevant information memory module is in order to the required related data of storage interpolation.
Further, described interpolation relevant information memory module comprises the first dual port random access memorizer, the second dual port random access memorizer, static RAM and digital signal processor internal storage, described static RAM is used to deposit interpolation information, the first dual port random access memorizer is used for depositing the first address of each REGION INTERPOLATION information at static RAM, the second dual port random access memorizer is used to deposit the interpolation point quantity in each interpolation zone, and the digital signal processor internal storage is used for storing coordinate transformed mappings relation information;
Further, the memorizer that carries for the field programmable gate array module of the described first dual port random access memorizer, the second dual port random access memorizer; Described static RAM is the memorizer of peripheral hardware;
Further, described field programmable gate array module also comprises a data storage controller, ultrasound echo data is carried out echo separates, and after the storage of N+1 ultrasound echo data is finished, notify the field programmable gate array module, the field programmable gate array module is according to the interpolation arithmetic of this notice startup to the ultrasound echo data in N bundle and N+1 bundle echo angle zone;
Described ultrasound echo data sub module stored comprises 3 odd point dual port random access memorizeies and 3 even number point dual port random access memorizeies; Wherein each is respectively applied for the odd point data and the even number point data of a branch of ultrasound echo data of storage to odd point dual port random access memorizer and even number point dual port random access memorizer.
The invention has the advantages that: make full use of the ability of FPGA parallel computation and processing and the technical advantage of DSP flexible programming, adopt FPGA to carry out real-time interpolation arithmetic, DSP finishes the initialization and the coordinate transform of interpolation information, avoided complicated trigonometric function operation and cordic algorithm computing, greatly reduce the cost of hardware system, and, realized the coordinate scan conversion of ultrasound echo data efficiently with this real-time that has improved the conversion of ultrasound data interpolation; Adopt the odd even of beam splitting to separate storage to ultrasound echo data, make FPGA interpolation calculation module can disposablely obtain 4 required ultrasound datas of interpolation arithmetic one time, thereby improved the real-time that data interpolating calculates; Do bridge by dsp chip, realized the seamless link of data between the coordinate transform of echo data and the ultrasonoscopy post processing cleverly; Owing to only need the memory space of 3 scanning lines of design can satisfy the interpolation requirement, the static RAM that therefore only need extend out a 512K * 16 is separately deposited interpolation information, remaining ultrasound echo data and interpolation information all can be stored in the memorizer that field programmable gate array carries, make digital scan converter hardware configuration of the present invention simple, the FPGA resource of consumption is also less.
Other advantages of the present invention, target, to set forth in the following description to a certain extent with feature, and to a certain extent,, perhaps can obtain instruction from the practice of the present invention based on being conspicuous to those skilled in the art to investigating hereinafter.Target of the present invention and other advantages can be by following description, claims, and the specifically noted structure realizes and obtains in the accompanying drawing.
Description of drawings
Fig. 1 shows the structure and the principle schematic of the digital scan converter of ultrasound data;
Fig. 2 shows the sketch map that ultrasound echo data is separated storage;
Fig. 3 shows the sketch map of P point interpolation in the ultrasound echo data;
Fig. 4 shows the mapping relations sketch map between ultrasound echo data rectangular coordinate and the polar coordinate.
The specific embodiment
Below with reference to accompanying drawing, the specific embodiment of the present invention is described.
Referring to Fig. 1, the digital scan converter of the ultrasound data of present embodiment comprises digital signal processor module, field programmable gate array module, interpolation relevant information memory module and ultrasound echo data memory module.
Described digital signal processor module is made up of DSP and peripheral circuit thereof, being used for the ultrasonography under the rectangular coordinate system is that Region Segmentation is carried out in the boundary line with the ultrasonic echo line, calculate successively rectangular coordinate in every adjacent 2 bundle ultrasonic echo wire clamp angular zones put the interpolation information of polar coordinate point, coordinate transform map information and should the zone in interpolation point quantity, and interpolation information, coordinate transform map information and interpolation point quantity stored in the corresponding memory module; And the ultrasound echo data after field programmable gate array module interpolation finished is carried out Coordinate Conversion.
Described field programmable gate array module is made up of FPGA and peripheral circuit thereof, be used for according to the area distribution of ultrasound echo data in rectangular coordinate system, in interpolation relevant information memory module, search corresponding interpolation information, and, finish interpolation successively to each regional ultrasound echo data according to interpolation information;
The field programmable gate array module has built-in memorizer, wherein the first dual port random access memory RAM 7 is used for depositing the first address of each interpolation REGION INTERPOLATION information at static RAM, the second dual port random access memory RAM 8 is used to deposit the interpolation point quantity in each interpolation zone; Referring to Fig. 1, Fig. 2, the field programmable gate array module has built-in memorizer also to comprise 3 odd point dual port random access memory RAM 1, RAM3, RAM5 and 3 even number point dual port random access memory RAM 2, RAM4, RAM6; Also comprise the data storage controller of forming by wave beam storage controlled state machine and echo data storage control at the scene in the programmable gate array module, described echo data storage control carries out echo to ultrasound echo data to be separated, and after the storage of N+1 ultrasound echo data is finished, store controlled state machine notification data interpolation state controller by wave beam, described data interpolating state controller starts the interpolation arithmetic of the ultrasound echo data in N bundle and N+1 bundle echo angle zone according to this notice; Wherein each is respectively applied for the odd point data and the even number point data of a branch of ultrasound echo data of storage to odd point dual port random access memorizer and even number point dual port random access memorizer.
Described interpolation relevant information memory module, in order to the required related data of storage interpolation, described interpolation relevant information memory module comprises the first dual port random access memory RAM 7 that is arranged in the field programmable gate array module, the second dual port random access memory RAM 8, the static RAM SRAM and the digital signal processor internal storage of the 512K of peripheral hardware * 16, described static RAM SRAM is used to deposit interpolation information, RAM7 is used for depositing the first address of each REGION INTERPOLATION information at static RAM, RAM8 is used to deposit each regional interpolation point quantity, and the digital signal processor internal storage is used for storing coordinate transformed mappings relation information.
Also be provided with 4 point data interpolation submodules in the field programmable gate array module, described 4 point data interpolation submodules are made up of data interpolating controlled state machine, 4 point interpolation data reading controllers and 4 point data weighted interpolation modules
Collection stores processor for ultrasound echo data, need 2 synchronous identification signals, one is the frame enable signal, represent the beginning of a frame image data, another is the echo data enable signal, under the effect of these two signals, wave beam storage controlled state machine can each bundle echo data of accurate recognition, and corresponding echo data is handled;
Wave beam storage controlled state machine is worked under frame enable signal and the combined effect of echo data enable signal.The frame enable signal tells the echo data of wave beam storage controlled state machine one frame new images to begin, under the effect of echo data enable signal, pass through internal counter, export corresponding stored information: line_counter[7..0] which bundle ultrasound echo data line of signal indication, data_counter[8..0] expression a branch of ultrasound echo data in which echo data, the echo data storage control stores echo data in the corresponding dual port random access memorizer into according to above-mentioned stored information.
Adopt this method storage to guarantee:
A. in the interpolation arithmetic process,, adopt above-mentioned storage organization, increased bus and read width, can once read 4 interpolated data a read cycle and offer interpolating module, thereby greatly improve interpolation efficiency because relate to 4 point interpolation computings.
B. for the interpolation algorithm of a ultrasonoscopy,, only need the polar data of N and two echo scanning lines of N+1, promptly carry out the interpolation conversion of polar coordinate to rectangular coordinate by 4 point interpolation algorithms for the image values interpolation of n-quadrant.So, in this patent, only need the memory space of 3 scanning lines of design can satisfy the interpolation requirement in order to make full use of storage resources.When the N bar, when the storage of N+1 bar echo data finishes, start the storage of N+2 bar echo data immediately, meanwhile, log-on data interpolation controlled state machine according to the interpolation information of N and N+1 bar ultrasonic echo data, can be finished the interpolation arithmetic operation of n-quadrant from polar coordinate to the rectangular coordinate.
The interpolation arithmetic operation of ultrasonic echo data is finished by data interpolating controlled state machine.When N bundle and the storage of N+1 bundle echo data finish, wave beam storage controlled state machine produces interrupt signal notification data interpolation controlled state machine, the response of data interpolating controlled state machine is interrupted, store the identification code that the controlled state machine is sent according to wave beam, start the interpolation of n-quadrant ultrasonic echo data immediately, interpolation method adopts 4 point data interpolation.
4 point data interpolation as shown in Figure 3.Ultrasonic echo data is that the form with rectangular coordinate shows in computer, when carrying out conversion, the point of rectangular coordinate need be mapped to polar point, because rectangular coordinate point is when being mapped to polar coordinate point, exhausted most point all can not be polar point just, all need to carry out the normalization interpolation arithmetic of polar coordinate numerical point according to echo data, which 2 echo line corresponding 4 echo datas of ABCD of each interpolation P point that calculate in the rectangular coordinate are, and noting is which point of echo data, and 8 equal portions that 4 of ABCD carry out horizontal longitudinal direction are quantized, calculate the immediate quantization areas of interpolation P point, thereby obtain the interpolation information that P is ordered.
For carrying out the interpolation that P is ordered in 4 regional ABCD, at first according to wave beam storage controlled state machine, data interpolating controlled state machine is determined which Shu Huibo line that the A point is the whole ultrasonic image memory region, secondly determine that according to interpolation information the A point is which point of this bundle echo data, for 4 zones of ABCD, carry out horizontal vertical 8 equal portions and quantize.Carry out interpolation for the ultrasonic signal in 4 zones, this patent is supported 64 (8 * 8) point interpolation at most, and this precision can satisfy the demand of engineering practical application fully.
For the interpolation that P is ordered, need know A, B, C, numerical value that D is 4 and P point be in the quantized values in these 4 zones, and promptly the AF section is eight of an AD section/several, and the AE section is eight of an AB section/several.Carry out linear interpolation by ABCD four point value then, calculate the numerical value that P is ordered.So when calculating the P point value, relevant interpolation information has been carried out following storage arrangement: the beginning memory address of every echo scanning line interpolation stored information of dual port RAM 7 storages, each corresponding interpolated data number in interpolation zone of dual port RAM 8 storages.The SRAM storage of 512K * 16 be whole ultrasonic image detailed interpolation information from polar coordinate to the rectangular coordinates transformation.Above-mentioned interpolation information is finished by DSP (TMS320DM642AGNZ7) initialization, because whole ultrasonic image detailed interpolation quantity of information from polar coordinate to the rectangular coordinates transformation is very big, has adopted the SRAM that extends out 512K * 16 in the present invention.DSP is by I/O mouth control bus change-over switch, realizes the SRAM of 512K * 16 is carried out the initialization of interpolation information, switches bus switch by I/O then, carries out reading of interpolation information by data interpolating controlled state machine.
The digital scanning conversion method of the ultrasound data of present embodiment comprises the steps:
1) referring to Fig. 4, the digital signal processor module is according to ultrasonography size and ultrasonic echo line, ultrasonography under the rectangular coordinate system is carried out Region Segmentation, in general, with the ultrasonic echo line is that Region Segmentation is carried out to the ultrasonography under the rectangular coordinate system in the demarcation line, every adjacent 2 bundle ultrasonic echo wire clamp angular zones are a zone, be boundary promptly with M bundle ultrasonic echo line, ultrasonography under the rectangular coordinate is divided into the M-1 equal portions, calculate the interior rectangular coordinate of every adjacent 2 bundle ultrasonic echo wire clamp angular zones successively and put the interpolation information of polar coordinate point, coordinate transform mapping relations information and should the zone in interpolation point quantity, the interpolation information that each is regional stores static RAM SRAM into, store the storage first address of interpolation information in static RAM into RAM7, the interpolation point quantity that each is regional stores among the RAM8; Referring to Fig. 1, in 16 the interpolation information, the current interpolation point of high 10 bit representations need read which data of corresponding echo data, is used for control and reads ABCD 4 point interpolation data from the corresponding address of dual port RAM 1-RAM6.Low 68 minute weighted informations such as grade of representing horizontal and vertical interpolation that interpolation P point is required respectively; Coordinate transform mapping relations information is then deposited in the memory module of digital signal processor inside modules
2) the odd point data in each bundle ultrasound echo data are separated with the even number point data, store into respectively among the dual port random access memory RAM 1-RAM6 different in the ultrasound echo data memory module; Referring to Fig. 2, concrete, RAM1-RAM6 is divided into three pairs, a pair of odd point dual port random access memorizer and even number point dual port random access memorizer are used to store a branch of ultrasound echo data, for a branch of ultrasound echo data, with wherein the 1st, 3,5, the data storage of odd point such as 7...... is to odd point dual port random access memorizer, the 2nd, 4,6, the data storage of even number point such as 8...... is to even number point dual port random access memorizer;
3) the field programmable gate array module is according to the notice of ultrasound echo data memory module, reading the corresponding interpolation in current interpolation zone from dual port RAM 8 counts, from dual port RAM 7, read the memory address of the corresponding ultrasound data in current interpolation zone, from SRAM, read the corresponding interpolation information of each interpolation point then successively, read 4 corresponding ultrasound echo data from the ultrasound echo data memory module and carry out interpolation arithmetic, and interpolation result is deposited in the dual port RAM of two 4K words, in the storing process of data, the dual port RAM of two 4K words carries out the storage of ping-pong as relief area, behind the interpolation arithmetic of finishing the ultrasound echo data in a zone, send interrupt signal to the digital signal processor module;
4) the digital signal processor module responds is interrupted and receiving step 2) ultrasound echo data behind the interpolation arithmetic in the zone of gained, according to the coordinate transform map information, be stored to the respective point of rectangular coordinate;
5) described step 2), after having stored N bundle and N+1 bundle ultrasound echo data, startup is to the storage of N+2 bundle ultrasound echo data, simultaneously send an interpolation_start signalisation data interpolating controlled state machine by wave beam storage controlled state machine and begin interpolation, the wave beam memory state machine is sent a line_counter[7..0] to tell data interpolating controlled state machine current be N+2 bundle echo data to signal; The data interpolating state controller of notice field programmable gate array module, described data interpolating state controller basis is promptly according to interpolation_start signal and line_counter[7..0] signal enabling field programmable gate array module execution in step 3), ultrasound echo data to N bundle and N+1 bundle echo angle zone is carried out interpolation arithmetic, and setting up procedure 4 after interpolation arithmetic was finished) this regional ultrasound echo data is carried out coordinate transform;
After the storage of N+2 bundle ultrasound echo data is finished, startup is to the storage of N+3 bundle ultrasound echo data, cover N bundle ultrasound echo data with N+3 bundle ultrasound echo data, notify the data interpolating state controller of field programmable gate array module simultaneously by wave beam storage controlled state machine, described data interpolating state controller starts field programmable gate array module execution in step 3 according to this notice), the ultrasound echo data in N+1 bundle and N+2 bundle echo angle zone is carried out interpolation arithmetic; Setting up procedure 4 after interpolation arithmetic was finished) this regional ultrasound echo data is carried out coordinate transform;
As cocycle, up to finishing the data transaction when a width of cloth ultrasonoscopy, afterwards, DSP can use these data to carry out the post processing work of image, thereby realized the seamless link between coordinate transform and the post processing of image data, improved the program operational efficiency greatly.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. the digital scanning conversion method of ultrasound data is characterized in that: comprise the steps:
1) the digital signal processor module is according to ultrasonography size and ultrasonic echo line, ultrasonography under the rectangular coordinate system is carried out Region Segmentation, calculate successively rectangular coordinate in each zone put polar coordinate point interpolation information, coordinate transform mapping relations information and should the zone in interpolation point quantity, and the first address and the interpolation point quantity of the interpolation information that each is regional, each REGION INTERPOLATION information store in the corresponding interpolation relevant information memory module;
2) the field programmable gate array module comprises a ultrasound echo data sub module stored, and described field programmable gate array module receives ultrasound echo data, and ultrasound echo data is stored in the ultrasound echo data sub module stored;
3) the field programmable gate array module reads ultrasound echo data, according to the area distribution of ultrasound echo data in rectangular coordinate system, in interpolation relevant information memory module, search corresponding interpolation information, and according to interpolation information, finish interpolation arithmetic, send interrupt signal to the digital signal processor module then the ultrasound echo data in a zone;
4) the digital signal processor module responds is interrupted and receiving step 3) ultrasound echo data after the interpolation in the zone of gained, according to the coordinate transform map information, be stored to the respective point of rectangular coordinate;
5) described step 2), after having stored N bundle and N+1 bundle ultrasound echo data, startup is to the storage of N+2 bundle ultrasound echo data, setting up procedure 3 simultaneously), the ultrasound echo data in N bundle and N+1 bundle echo angle zone is carried out interpolation arithmetic; Setting up procedure 4 then) this regional ultrasound echo data is carried out coordinate transform;
After the storage of N+2 bundle ultrasound echo data is finished, startup is to the storage of N+3 bundle ultrasound echo data, cover N bundle ultrasound echo data with N+3 bundle ultrasound echo data, while setting up procedure 3), the ultrasound echo data in N+1 bundle and N+2 bundle echo angle zone is carried out interpolation arithmetic; Setting up procedure 4 then) this regional ultrasound echo data is carried out coordinate transform;
As cocycle, up to the interpolation of finishing a frame ultrasound echo data and mapping.
2. the digital scanning conversion method of ultrasound data as claimed in claim 1, it is characterized in that: described step 2), odd point data in each bundle ultrasound echo data are separated with the even number point data, store dual port random access memorizeies different in the ultrasound echo data sub module stored respectively into.
3. the digital scanning conversion method of ultrasound data as claimed in claim 1, it is characterized in that: described interpolation relevant information memory module comprises first memory, second memory and the 3rd memorizer; In the described step 1), store interpolation information into first memory, store each REGION INTERPOLATION information into second memory at the first address of first memory, the interpolation point quantity that each is regional stores the 3rd memorizer into, and coordinate transform mapping relations information stores in the digital signal processor internal storage.
4. the digital scanning conversion method of ultrasound data as claimed in claim 1, it is characterized in that: described interpolation information comprises that current interpolation point need read the ordinal number of echo data, and current interpolation point required vertically and the weighted information of lateral interpolation; The interpolation information of described each interpolation point is represented that by 16bit the ordinal number that wherein needs to read echo data is represented that by high 10bit the required weighted information vertical and lateral interpolation of current interpolation point is represented with low 6bit.
5. the digital scanning conversion method of ultrasound data as claimed in claim 1, it is characterized in that: in the step 1), with the ultrasonic echo line is that Region Segmentation is carried out to the ultrasonography under the rectangular coordinate system in the demarcation line, and every adjacent 2 bundle ultrasonic echo wire clamp angular zones are an interpolation domain transformation.
6. the digital scan converter of ultrasound data is characterized in that: comprise
The digital signal processor module, ultrasonography under the rectangular coordinate system is carried out Region Segmentation, calculate successively rectangular coordinate in each zone put polar coordinate point interpolation information, coordinate transform mapping relations information and should the zone in interpolation point quantity, and first address and interpolation point quantity that the interpolation information that each is regional, each REGION INTERPOLATION information are stored store in the interpolation relevant information memory module;
The field programmable gate array module, comprise the ultrasound echo data sub module stored, described field programmable gate array module receives ultrasound echo data, ultrasound echo data is stored in the ultrasound echo data sub module stored, according to the area distribution of ultrasound echo data in rectangular coordinate system, in search corresponding interpolation information, and, finish interpolation successively to each regional ultrasound echo data according to interpolation information; And
Interpolation relevant information memory module is in order to the required related data of storage interpolation.
7. the digital scan converter of ultrasound data as claimed in claim 6, it is characterized in that: described interpolation relevant information memory module comprises the first dual port random access memorizer, the second dual port random access memorizer, static RAM and digital signal processor internal storage, described static RAM is used to deposit interpolation information, the first dual port random access memorizer is used for depositing the first address of each REGION INTERPOLATION information at static RAM, the second dual port random access memorizer is used to deposit the interpolation point quantity in each interpolation zone, and the digital signal processor internal storage is used for storing coordinate transformed mappings relation information.
8. the digital scan converter of ultrasound data as claimed in claim 7 is characterized in that: the memorizer that the described first dual port random access memorizer, the second dual port random access memorizer carry for the field programmable gate array module; Described static RAM is the memorizer of peripheral hardware.
9. the digital scan converter of ultrasound data as claimed in claim 7, it is characterized in that: described field programmable gate array module also comprises a data storage controller, ultrasound echo data is carried out echo separates, and after finishing, the storage of N+1 ultrasound echo data notifies the field programmable gate array module, the field programmable gate array module starts according to this notice restraints the interpolation arithmetic of the ultrasound echo data in echo angle zone to N bundle and N+1, starts the storage work of N+2 bundle echo data simultaneously;
Described ultrasound echo data sub module stored comprises 3 odd point dual port random access memorizeies and 3 even number point dual port random access memorizeies; Wherein each is respectively applied for the odd point data and the even number point data of a branch of ultrasound echo data of storage to odd point dual port random access memorizer and even number point dual port random access memorizer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109116353A (en) * | 2018-07-19 | 2019-01-01 | 中国科学院电子学研究所 | The method and FPGA system of stolt interpolation are realized with FPGA |
| CN110767304A (en) * | 2019-09-25 | 2020-02-07 | 广东宝莱特医用科技股份有限公司 | Method and device for circularly storing data for hemodialysis device |
| CN113647976A (en) * | 2021-08-17 | 2021-11-16 | 逸超科技(北京)有限公司 | Echo data packaging method, device, equipment and readable storage medium |
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| JPS6024429B2 (en) * | 1977-08-15 | 1985-06-12 | 沖電気工業株式会社 | Digital scan conversion method |
| CN101380237B (en) * | 2007-09-04 | 2012-03-21 | 深圳迈瑞生物医疗电子股份有限公司 | Scanning transform method and device for ultrasonic image-forming |
| CN101396281B (en) * | 2007-09-27 | 2012-11-14 | 深圳迈瑞生物医疗电子股份有限公司 | Scanning transform method and device for color ultrasound image-forming |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109116353A (en) * | 2018-07-19 | 2019-01-01 | 中国科学院电子学研究所 | The method and FPGA system of stolt interpolation are realized with FPGA |
| CN110767304A (en) * | 2019-09-25 | 2020-02-07 | 广东宝莱特医用科技股份有限公司 | Method and device for circularly storing data for hemodialysis device |
| CN113647976A (en) * | 2021-08-17 | 2021-11-16 | 逸超科技(北京)有限公司 | Echo data packaging method, device, equipment and readable storage medium |
| CN113647976B (en) * | 2021-08-17 | 2023-08-15 | 逸超科技(武汉)有限公司 | Echo data encapsulation method, device, equipment and readable storage medium |
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