CN106419958A - Method for wireless palmtop color ultrasound rapid compression and transmission - Google Patents

Abstract

The invention discloses a method for wireless palmtop color ultrasound rapid compression and transmission. Specifically, the method comprises the following steps: S1, conducting image reconstruction by virtue of an ARM chip so as to achieve a color 3D function, specifically, calling OpenGL ES2.0 and OpenVG 1.1 hardware accelerators which are integrated to the ARM chip, multi-format HD720p video decoder and video coder hardware engines, a high-quality hardware video de-interleaving unit, [alpha] mixing and color space converter, image and video size adjusting, reversing and rotating hardware and a system hardware coder to process a color image, and then compress the ultrasonic image in accordance with an H.264 standard; and S2, transmitting compressed data to an external host by virtue of a WIFI module and a WIFI antenna, so as to process and display the compressed data. The method provided by the invention, which adopts the ARM chip, can achieve hardware coding and decoding on the image and the video, so that the capacity of the system to process and compress the ultrasonic image is greatly improved, and the processed ultrasonic image is transmitted to a display terminal by virtue of the WIFI module.

Description

A kind of method of wireless hand-held color ultrasound Fast Compression transmission

Technical field

The present invention relates to ultrasonic technique field, more specifically, pass particularly to a kind of wireless hand-held color ultrasound Fast Compression Defeated method.

Background technology

Ultrasonic Diagnosis mainly utilizes ultrasonic good directive property and the reflection similar to light, scattering, decay and Doppler's effect Physical characteristic should be waited, by ultrasound emission into the human body, when the ultrasonic interface propagated in vivo and encounter the formation of different tissues density Reflection can be produced and scatter, echo signal is received, after in addition detection etc. is processed, it is possible to obtain tissue and blood flow cross-section figure As.The section of tissue is shown with black white image, and blood circumstance, according to Doppler effect, represents blood flow with different colors Speed and direction, referred to as color ultrasound.

Color ultrasound system is towards portable, hand held development.Because palm color ultrasound needs to process substantial amounts of image information, and Image information needs to transmit between color ultrasound and processing terminal (mobile phone, flat board and computer etc.) by wireless (WiFi), and transmission is not Compressed image can take massive band width and disposal ability, constitutes very big pressure to equipment and wireless (WiFi) network, therefore Existing wireless hand-held ultrasonic device does not enable coloured image function.

Content of the invention

It is an object of the invention to provide a kind of method of the convenient wireless hand-held color ultrasound Fast Compression transmission of data transfer.

In order to achieve the above object, the technical solution used in the present invention is as follows：

A kind of method of wireless hand-held color ultrasound Fast Compression transmission, the method is based on ultrasonic chip, ARM chip, WIFI mould Block and display terminal are realized, and described ARM chip is connected with ultrasonic chip, and described WIFI module is connected with ARM chip, described display Terminal and WIFI module network connection, the method specifically includes following steps,

S1, it is to call ARM integrated chip to image reconstruction to realize colored 3D function, concrete grammar by ARM chip OpenGL ES2.0 and OpenVG 1.1 hardware accelerator, multi-format HD720p Video Decoder and video encoder hardware draw Hold up, high-quality hardware video deinterleaver, α mixing and color space are changed, image and video size adjustment, reversion and rotation are hard Part, system hardware encoder processes to coloured image, then ultrasonoscopy is pressed H.264 standard compression；

S2, by compression after data send by WIFI module and WIFI antenna carry out to outside main frame process show Show.

Further, the concrete grammar of described step S1 is,

S11, each frame of video is separated into the block being made up of pixel；

Some original blocks of frame of video are carried out spatial prediction, conversion, optimize and entropy by S12, the method adopting spatial redundancy Coding；

S13, the different masses to successive frame are deposited using the method deposited temporarily；

S14, adopt remaining space redundancy, the residual block in frame of video is encoded；

S15, by residual block in the block deposited in step S13 and step S14 temporarily according to H.264 standard compression；

S16, by step 15 compress after data display terminal is sent to using 802.11n agreement by WIFI module.

Further, in described step S2, picture signal is carried out spatial domain image sharpening, frequency area image by display terminal Sharpening, Pseudo Col ored Image, color transformation, and shown.

Compared with prior art, it is an advantage of the current invention that：The present invention adopts ARM chip, achievable image and video Hardware encoding and decoding, the system that is greatly improved, to the process of ultrasonoscopy and compressed capability, is passed by WIFI module after the completion of process Deliver to display terminal.

Brief description

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is the frame diagram of wireless hand-held color ultrasound of the present invention.

Fig. 2 is the functional framework figure of ARM chip in wireless hand-held color ultrasound of the present invention.

Fig. 3 is the flow chart that in wireless hand-held color ultrasound of the present invention, ARM chip is processed.

Fig. 4 is the flow chart H.264 encoding in wireless hand-held color ultrasound of the present invention and decoding.

Fig. 5 is the circuit diagram of WIFI module in wireless hand-held color ultrasound of the present invention.

Specific embodiment

Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clearly defining.

Refering to shown in Fig. 1-Fig. 5, the present invention provides a kind of method of wireless hand-held color ultrasound Fast Compression transmission, the method base Realize in ultrasonic chip, ARM chip, WIFI module and display terminal, described ARM chip is connected with ultrasonic chip, described WIFI Module is connected with ARM chip, described display terminal and WIFI module network connection.

The method of wireless hand-held color ultrasound Fast Compression transmission of the present invention specifically includes following steps：

The first step, it is to call ARM integrated chip to image reconstruction to realize colored 3D function, concrete grammar by ARM chip OpenGL ES2.0 and OpenVG 1.1 hardware accelerator, multi-format HD720p Video Decoder and video encoder hardware draw Hold up, high-quality hardware video deinterleaver, α mixing and color space are changed, image and video size adjustment, reversion and rotation are hard Part, system hardware encoder processes to coloured image, then ultrasonoscopy is pressed H.264 standard compression；It concretely comprises the following steps：

S11, each frame of video is separated into the block being made up of pixel, the therefore process of the coded treatment of frame of video can reach Rank to block；

Some original blocks of frame of video are carried out spatial prediction, conversion, optimize and entropy by S12, the method adopting spatial redundancy Coding (Variable Length Code)；

S13, the different masses to successive frame are deposited using the method deposited temporarily, so, only need to have change in successive frame Part encoded.This algorithm to be completed using motion prediction and motion compensation.To some specific blocks, one or more The frame execution having been carried out encoding searches for determine the motion vector of block, and thus prediction master in coding below and decoding Block；

S14, adopt remaining space redundancy, the residual block in frame of video is encoded, for example：For source block and phase Answer the difference of prediction block, again using conversion, optimization and entropy code；

S15, by residual block in the block deposited in step S13 and step S14 temporarily according to H.264 standard compression；

S16, by step 15 compress after data display terminal is sent to using 802.11n agreement by WIFI module, So 300Mbps can be brought up to the data transmission capabilities of WIFI module from 150Mbps.

In a particular application, the order of each step above-mentioned is not strictly to execute by this, depending on ultrasonic signal and view data Need flexible arrangement

Second step, the data after compression is sent by WIFI module and WIFI antenna and processed to outside main frame Display.Picture signal can be carried out spatial domain image sharpening, frequency domain image sharpening, Pseudo Col ored Image, colored change by display terminal Change, and shown.

It is an advantage of the current invention that：The present invention increases ARM core, using the integrated OpenGL ES.0 of ARM core and OpenVG1.1 hardware accelerator；Multi-format HD720p Video Decoder and video encoder hardware engine；High-quality hardware video Deinterleaver；α mixing and color space conversion；Image and video size adjustment, reversion and rotating hardware；System hardware decodes Device, to changing the way that all ultrasonoscopys will be realized by software algorithm in the past, by the coding of image, decodes, image is inserted Value, the work such as image enhaucament transfers to ARM hardware core to process, and on the basis of accelerating signal transacting efficiency, substantially reduces every frame The size of data of ultrasonoscopy.

The present invention utilizes the hardware coder of ARM chip, hardware decoder, by ultrasonoscopy and video format by originally surpassing What sound algorithm generated MPEG, MPEG-2, MPEG-4 form is changed to H.264 form；On the basis improving video and picture quality On, the compression ratio of image is greatly improved；Compare with compress techniques such as MPEG2 with MPEG4ASP, under equal picture quality, adopt H.264 the data volume after technique compresses only has the 1/3 of 1/8, the MPEG4 of MPEG2.

Although being described in conjunction with the accompanying embodiments of the present invention, patent owner can be in claims Within the scope of make various modifications or modification, as long as less than the present invention the protection domain described by claim, all should Within protection scope of the present invention.

Claims (3)

1. a kind of transmission of wireless hand-held color ultrasound Fast Compression method it is characterised in that：The method is based on ultrasonic chip, ARM core Piece, WIFI module and display terminal are realized, and described ARM chip is connected with ultrasonic chip, and described WIFI module is with ARM chip even Connect, described display terminal and WIFI module network connection, the method specifically includes following steps,

S1, it is to call the OpenGL of ARM integrated chip to image reconstruction to realize colored 3D function, concrete grammar by ARM chip ES2.0 and OpenVG 1.1 hardware accelerator, multi-format HD720p Video Decoder and video encoder hardware engine, high-quality Hardware video deinterleaver, α mixing and color space conversion, image and video size adjustment, reversion and rotating hardware, system is hard Part encoder processes to coloured image, then ultrasonoscopy is pressed H.264 standard compression；

S2, by compression after data send by WIFI module and WIFI antenna carry out to outside display terminal process show Show.

2. wireless hand-held color ultrasound Fast Compression according to claim 1 transmission method it is characterised in that：Described step S1 Concrete grammar be,

S11, each frame of video is separated into the block being made up of pixel；

Some original blocks of frame of video are carried out spatial prediction, conversion, optimize and entropy volume by S12, the method adopting spatial redundancy Code；

S13, the different masses to successive frame are deposited using the method deposited temporarily；

S14, adopt remaining space redundancy, the residual block in frame of video is encoded；

S15, by residual block in the block deposited in step S13 and step S14 temporarily according to H.264 standard compression；

S16, by step 15 compress after data display terminal is sent to using 802.11n agreement by WIFI module.

3. wireless hand-held color ultrasound Fast Compression according to claim 1 transmission method it is characterised in that：Described step S2 In, picture signal is carried out spatial domain image sharpening, frequency domain image sharpening, Pseudo Col ored Image, color transformation by display terminal, and Shown.