CN101208041B - Radioactive ray camera and processing method of radioactive ray detection signal - Google Patents
Radioactive ray camera and processing method of radioactive ray detection signal Download PDFInfo
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Abstract
A radiographic imaging device comprising first, second, and third image processing units. The first image processing unit outputs a first image in response to a radiation detection signal. The second image processing unit carries out a second image processing including at least a processing of the first image the number of pixels of which is reduced according to a pixel arrangement map showing pixel arrangement information and outputs a second image. The third image processing unit outputs a third image used as a final radiographic image from the first image. Since the pixel arrangement map is created previously, the time required until the output of the second image can be shortened correspondingly to the pixel arrangement map. As a result, the time required until the output of an image for check can be reduced.
Description
Technical field
The present invention relates to a kind ofly shine subject, obtain the radiation-ray camera pick-up device and the radiation detection signal processing method of radiation image, especially relate to the output of the image after the Flame Image Process according to detected radiation detection signal.
Background technology
As the example of radiation-ray camera pick-up device, obtain in the camera head of radioscopic image detecting X ray, carry out following processing.That is, detect to subject irradiation X ray, by detector see through the X ray of subject after, to this detected signal carry out gamma curves conversion, with take processing such as the corresponding spatial frequency processing of parts, auto brightness adjustment.Through after these a plurality of Flame Image Process, in monitor, show, sinter film (film) into.
In the past,, used image intensifier (I.I), but in recent years, used plate type X-ray detector (brief description is " FPD ") as X-ray detector.Under the situation of FPD, before above-mentioned Flame Image Process, also must carry out revisals such as offset compensation, gain revisal, loss revisal and handle.
, have following technology: promptly after obtaining image, output shows does not implement the preview image that revisal is handled, this preview image is used for image to be confirmed, and after revisal obtains with image, the radiation image (for example, with reference to patent documentation 1) after the output revisal is handled.
Patent documentation 1: the spy opens 2003-325494 communique (the 5th～7 page, Fig. 1)
, in the Flame Image Process that comprises above-mentioned skew/gain/revisals such as loss revisal processing, need the processing time to a certain degree.Under the situation of senior machine, adopt this method: by the high arithmetic processing circuit of disposal ability is installed, will foreshorten to the degree of no problem the processing time, but under the situation of rudimentary machine or universal machine, owing to general arithmetic processing circuit has been installed, so be difficult to shorten the processing time.Therefore, for example cause location confirmation (position of subject or with the affirmation of the position of FPD relation) can need the problem of time before.If do not carry out location confirmation at once, then She Xiang shooting again etc. is taken time and energy.As a result, hinder the raising of checking efficiency, to the burden increase of subject.
Therefore, generally adopt this method: in the stage midway before the degree that enforcement Flame Image Process to executing location is confirmed, preview shows the image that obtains by Flame Image Process.But in the method, preview image keeps original picture size constant and comprise the Flame Image Process that revisal is handled.And a lot of situations are that the image in the moment before the processing that is implemented in spended time in the back segment is for example handled corresponding to the spatial frequency of taking the position uses as preview image.Therefore, processing itself is fairly simple, but understands how many spended times before the output preview image.
In addition, as above-mentioned patent documentation 1, the method of have except that the radiation image that finally obtains (the 2nd image in the patent documentation 1), also the preview image (the 1st image in the patent documentation 1) of revisal processing not being implemented in preparation by this method, can reduce the output preview image time before.And, can reduce the radiation image output time before that finally obtains.Except that the method as this patent documentation 1, also expectation can reduce the additive method of image output time before.
Therefore, consider following method: promptly, Flame Image Process is divided into the 1st～the 3rd Flame Image Process, at first, to detect the resulting x-ray detection signal of X ray that sees through subject by detector, carry out the 1st Flame Image Process, according to the 1st image of exporting after the 1st Flame Image Process, for exporting the 2nd image, carry out the 2nd Flame Image Process of the processing comprise the amount of pixels that is used to reduce the 1st image at least, after the output result of the 2nd image of after the 2nd Flame Image Process, exporting, according to the 1st image that is undertaken by the 1st Flame Image Process parts exporting after the 1st Flame Image Process, for importing the 3rd image, corresponding to the output result of the 2nd image, carry out the 3rd Flame Image Process with respect to the 1st image, the 3rd image is assumed to be the radiation image that finally obtains.
According to this method, if the 2nd above-mentioned image is assumed to be preview image, the output result of the 2nd image of then exporting after the 2nd Flame Image Process (being the output of preview image) afterwards, execution is to the 3rd Flame Image Process of the 1st image, output result (output of preview image) to should the 2nd image carries out the 3rd Flame Image Process.That is, in order to confirm the 3rd image, output is as the 2nd image of preview image earlier.So in order to export the 2nd image, the 2nd Flame Image Process owing to comprise at least is used to reduce the processing of the amount of pixels of the 1st image, so can make time decreased before output the 2nd image corresponding to the amount of pixels that reduces at least.As a result, can reduce affirmation and export the time before with image.
, both just above-mentioned method is sometimes because the kind difference of Flame Image Process also can need long time before confirming with image (at this moment being the 2nd image) output.For example, Flame Image Process is carried out by order such as above-mentioned offset compensation → gain revisal → loss revisal →--revisal of → leakage current →---wait, but with regard to the loss revisal, relatively spends the processing time.Therefore, preferably, the processing of loss before the revisal is made as the 1st Flame Image Process, the processing of loss revisal is made as the 2nd Flame Image Process of the processing that comprises the amount of pixels that is used to reduce the 1st image, at loss revisal stage output preview image.Then, preferably, the preview image that the loss revisal of corresponding amount of pixels by being used to reduce the 1st image is exported is carried out the 3rd Flame Image Process as the processing after the loss revisal., owing to both just reduce the amount of pixels of the 1st image in the loss revisal stage, loss revisal itself also spends the processing time, exports the time before so still can spend affirmation with image.Like this, be not limited to lose revisal, both just in other Flame Image Process, also expectation further reduced the time of confirming with before the image output.
Summary of the invention
The present invention makes in view of the above problems, and its purpose is to provide a kind of radiation-ray camera pick-up device and the radiation detection signal processing method of affirmation with the time before the image output that reduce.
The present invention adopts following structure for realizing this purpose.
That is, radiation-ray camera pick-up device of the present invention is the radiation-ray camera pick-up device that obtains radiation image according to radiation detection signal, it is characterized in that possessing: the radiation exposure parts, to subject irradiation lonizing radiation; The lonizing radiation detection part detects the lonizing radiation that seen through subject; The 1st Flame Image Process parts according to by the detected radiation detection signal of lonizing radiation detection part, for exporting the 1st image, are carried out the 1st Flame Image Process to radiation detection signal; The 2nd Flame Image Process parts, carry out the 1st image exported after the 1st Flame Image Process according to the pixel arrangement figure of expression pixel arrangement information and by the 1st Flame Image Process parts, for exporting the 2nd image, carry out the 2nd Flame Image Process of the processing that comprises the amount of pixels that is used to reduce the 1st image at least; With the 3rd Flame Image Process parts, after the output result of the 2nd image of after carrying out the 2nd Flame Image Process, exporting by the 2nd Flame Image Process parts, according to the 1st image that is undertaken by the 1st Flame Image Process parts exporting after the 1st Flame Image Process, for exporting the 3rd image, output result according to the 2nd image, the 1st image is carried out the 3rd Flame Image Process, and the 3rd image is made as the radiation image that finally obtains.
According to radiation-ray camera pick-up device of the present invention, based on by the detected radiation detection signal of lonizing radiation detection part, for exporting the 1st image, the 1st Flame Image Process parts are to carrying out the 1st Flame Image Process by the detected radiation detection signal of lonizing radiation detection part.According to the 1st image that is undertaken by the 1st Flame Image Process parts exporting after the 1st Flame Image Process, for exporting the 2nd image and the 3rd image, the 2nd Flame Image Process parts are carried out the 2nd Flame Image Process of the processing comprise the amount of pixels that is used to reduce the 1st image at least, simultaneously, the 3rd Flame Image Process parts are carried out the 3rd Flame Image Process to the 1st image, and the 3rd image is made as the radiation image that finally obtains.After the output result of the 2nd image of exporting after carrying out the 2nd Flame Image Process by the 2nd Flame Image Process parts, carry out the 3rd Flame Image Process to the 1st image that the 3rd Flame Image Process parts are carried out, the output result of corresponding the 2nd image carries out the 3rd Flame Image Process.That is,, export the 2nd image earlier for confirming the 3rd image.So for exporting the 2nd image, the 2nd Flame Image Process owing to comprise at least is used to reduce the processing of the amount of pixels of the 1st image, so can make time decreased before output the 2nd image corresponding to the amount of pixels that is reduced at least.As a result, can reduce affirmation and export the time before with image.
Here, in the 2nd Flame Image Process, except that the 1st above-mentioned image, also export the 2nd image according to pixel arrangement figure.This pixel arrangement illustrates the configuration information of pixel.Therefore, if compare when only exporting the 2nd image according to the 1st image in the 2nd Flame Image Process, the situation when both export the 2nd image according to the 1st image and pixel arrangement figure can further reduce the time before output the 2nd image.As a result, can reduce affirmation and export the time before with image.
In an example of radiation-ray camera pick-up device of the present invention, above-mentioned pixel arrangement figure is the corresponding related respectively configuration information of a plurality of locations of pixels information before making pixel value that the pixel after amount of pixels reduced should dispose and reducing based on amount of pixels, in the 2nd above-mentioned Flame Image Process, the composing images processing unit, be used to reduce the processing of the amount of pixels of the 1st image with execution, simultaneously according to corresponding related these pixel values separately of a plurality of locations of pixels information institute before the reducing of pixel arrangement figure, respectively to these pixel values of pixel arrangement after the amount of pixels minimizing based on amount of pixels.Promptly, in the 2nd Flame Image Process, be used to reduce the processing of the amount of pixels of the 1st image by execution, simultaneously according to these pixel values separately of the corresponding association of a plurality of locations of pixels information institute before the reducing of image configurations figure based on amount of pixels, these pixel values of pixel arrangement after respectively amount of pixels being reduced become the loss revisal that comprises the amount of pixels that is used to reduce the 1st image.With regard to common loss revisal, owing to relatively spend the processing time, so, can reduce the time before the 2nd image output that the loss revisal of the amount of pixels by reducing by the 1st image obtains by carrying out the 2nd Flame Image Process according to this pixel arrangement figure.
In addition, radiation detection signal processing method of the present invention is a radiation detection signal processing method of carrying out the signal processing that is used to obtain radiation image according to detected radiation detection signal behind the irradiation subject, it is characterized in that, described signal processing possesses: the 1st Flame Image Process operation, according to radiation detection signal, for exporting the 1st image, radiation detection signal is carried out the 1st Flame Image Process; The 2nd Flame Image Process operation, according to the 1st image that carries out in pixel arrangement figure that pixel arrangement information is shown and the 1st Flame Image Process operation exporting after the 1st Flame Image Process, for exporting the 2nd image, carry out the 2nd Flame Image Process of the processing that comprises the amount of pixels that is used to reduce the 1st image at least; With the 3rd Flame Image Process operation, after the output result of the 2nd image of exporting after in the 2nd Flame Image Process operation, carrying out the 2nd Flame Image Process, according to the 1st image that is undertaken by the 1st Flame Image Process parts exporting after the 1st Flame Image Process, for exporting the 3rd image, output result corresponding to the 2nd image, the 1st image is carried out the 3rd Flame Image Process, and the 3rd image is made as the radiation image that finally obtains.
In addition, according to radiation detection signal processing method of the present invention,,, in the 1st Flame Image Process operation, radiation detection signal is carried out the 1st Flame Image Process for exporting the 1st image based on radiation detection signal.According to the 1st image that carries out in the 1st Flame Image Process operation exporting after the 1st Flame Image Process, for exporting the 2nd image and the 3rd image, in the 2nd Flame Image Process operation, in the 2nd Flame Image Process of carrying out the processing comprised the amount of pixels that is used to reduce the 1st image at least, in the 3rd Flame Image Process operation, the 1st image is carried out the 3rd Flame Image Process, and the 3rd image is made as the radiation image that finally obtains.And, after the output result of the 2nd image of exporting after in the 2nd Flame Image Process operation, carrying out the 2nd Flame Image Process, carry out the 3rd Flame Image Process in the 3rd Flame Image Process operation to the 1st image, carry out the 3rd Flame Image Process according to the output result of the 2nd image.That is,, export the 2nd image earlier for confirming the 3rd image.So, be used to export the 2nd Flame Image Process of the 2nd image owing to comprise the processing of the amount of pixels that is used to reduce the 1st image at least, so can make time decreased before output the 2nd image corresponding to the amount of pixels that reduces at least.As a result, can reduce affirmation and export the time before with image.
Here, in the 2nd Flame Image Process operation, except that the 1st above-mentioned image, also export the 2nd image according to pixel arrangement figure.This pixel arrangement illustrates the configuration information of pixel.Therefore, if compare when only exporting the 2nd image according to the 1st image in the 2nd Flame Image Process, the situation when both export the 2nd image according to the 1st image and pixel arrangement figure can further reduce the time before output the 2nd image.As a result, can reduce affirmation and export the time before with image.
In an example of radiation detection signal processing method of the present invention, above-mentioned signal processing also possesses the pixel arrangement figure that is used to form above-mentioned pixel arrangement figure and forms operation.Be pre-formed pixel arrangement figure in the operation owing to forming, so can be included in the preparation of the 2nd Flame Image Process at pixel arrangement figure.
In addition, in an example of radiation detection signal processing method of the present invention, above-mentioned pixel arrangement figure is the corresponding respectively configuration informations after related of a plurality of locations of pixels information before making pixel value that the pixel after amount of pixels reduced should dispose and reducing based on amount of pixels, in the 2nd above-mentioned Flame Image Process operation, execution is used to reduce the processing of the amount of pixels of the 1st image, simultaneously, according to pixel arrangement figure with reduce based on amount of pixels before corresponding related these pixel values separately of a plurality of locations of pixels information institute, respectively to these pixel values of pixel arrangement after the amount of pixels minimizing.Promptly, in the 2nd Flame Image Process, be used to reduce the processing of the amount of pixels of the 1st image by execution, simultaneously according to pixel arrangement figure with reduce based on amount of pixels before a plurality of locations of pixels information corresponding related these pixel values separately, these pixel values of pixel arrangement after respectively amount of pixels being reduced become the loss revisal that comprises the amount of pixels that is used to reduce the 1st image.With regard to common loss revisal, owing to relatively spend the processing time, so, can reduce the time before the output of the 2nd image that the loss revisal by the amount of pixels that is used to reduce the 1st image obtains by carrying out the 2nd Flame Image Process based on this pixel arrangement figure.
The invention effect
According to radiation-ray camera pick-up device of the present invention and radiation detection signal processing method,,, radiation detection signal is carried out the 1st Flame Image Process for exporting the 1st image based on radiation detection signal.According to the 1st image that carries out exporting after the 1st Flame Image Process, for exporting the 2nd image and the 3rd image, in the 2nd Flame Image Process of carrying out the processing comprise the amount of pixels that is used to reduce the 1st image at least, the 1st image is carried out the 3rd Flame Image Process, and the 3rd image is made as the radiation image that finally obtains.And, after the output result of the 2nd image of after carrying out the 2nd Flame Image Process, exporting, carry out the 3rd Flame Image Process to the 1st image, carry out the 3rd Flame Image Process according to the output result of the 2nd image.That is,, export the 2nd image earlier for confirming the 3rd image.So, be used to export the 2nd Flame Image Process of the 2nd image owing to comprise the processing of the amount of pixels that is used to reduce the 1st image at least, so can make time decreased before output the 2nd image corresponding to the amount of pixels that reduces at least.As a result, can reduce affirmation and export the time before with image.Here, in the 2nd Flame Image Process, except that the 1st above-mentioned image, also export the 2nd image according to pixel arrangement figure.This pixel arrangement illustrates the configuration information of pixel.Therefore, if compare when only exporting the 2nd image according to the 1st image in the 2nd Flame Image Process, the situation when both export the 2nd image according to the 1st image and pixel arrangement figure can further reduce the time before output the 2nd image.As a result, can reduce affirmation and export the time before with image.
Description of drawings
Fig. 1 is the block diagram of the radioscopy photographic attachment of embodiment.
Fig. 2 is the equivalent circuit that is used for the plate type X-ray detector the side of radioscopy photographic attachment seen.
Fig. 3 is the equivalent circuit of the plate type X-ray detector seen of plane.
Fig. 4 is the block diagram of the data flow of the expression concrete structure of each image processing part and each image etc.
Fig. 5 is the flow chart that a series of signal of each image processing part execution of expression is handled.
Fig. 6 is that expression is used for the flow chart that a series of signal that the conventional images handling part of the comparison of Fig. 5 carries out is handled.
Fig. 7 is expression forms the flow process of loss revisal figure and pixel arrangement figure according to the uniform irradiation image a key diagram.
Fig. 8 is the key diagram of the loss pixel in the pattern ground expression uniform irradiation image.
Fig. 9 is the key diagram of the loss image in the pattern ground expression uniform irradiation image and the pixel that should dispose.
Figure 10 is the key diagram of pattern ground expression loss revisal figure.
Figure 11 is the key diagram of pattern ground expression configuration pixel map.
Figure 12 is the flow chart that expression comprises the series of preprocessing that forms pixel arrangement figure.
Figure 13 is the flow chart of loss revisal that is used to reduce amount of pixels of the step T1 of more specifically presentation graphs 5.
Symbol description
2, X-ray tube; 3, plate type X-ray detector (FPD); 9, image processing part; 9a, the 1st image processing part; 9b, the 2nd image processing part; 9c, the 3rd image processing part; C, pixel arrangement figure; D, loss pixel.
The specific embodiment
In radiation-ray camera pick-up device, the Flame Image Process parts are divided into the 1st Flame Image Process parts, the 2nd Flame Image Process parts and the 3rd Flame Image Process parts, according to by the detected radiation detection signal of lonizing radiation line detection part, for exporting the 1st image, the 1st Flame Image Process parts are to carrying out the 1st Flame Image Process by the detected radiation detection signal of lonizing radiation detection part.According to the 1st image that is undertaken by the 1st Flame Image Process parts exporting after the 1st Flame Image Process, for exporting the 2nd image and the 3rd image, the 2nd Flame Image Process parts are in the 2nd Flame Image Process of carrying out the processing comprise the amount of pixels that is used to reduce the 1st image at least, the 3rd Flame Image Process parts are carried out the 3rd Flame Image Process to the 1st image, and the 3rd image is made as the radiation image that finally obtains.If confirm the 3rd image output the 2nd image earlier, then be used to export the 2nd Flame Image Process of the 2nd image owing to comprise the processing of the amount of pixels that is used to reduce the 1st image at least, so can reduce affirmation with the time before the image output.And, in the 2nd Flame Image Process, because except that the 1st above-mentioned image, also the pixel arrangement figure according to the configuration information of representing pixel exports the 2nd image, so realize further reducing the purpose of confirming with the image output time before.
Embodiment
Below, with reference to the description of drawings embodiments of the invention.Fig. 1 is the block diagram of the radioscopy photographic attachment of embodiment, and Fig. 2 is the equivalent circuit that is used for the plate type X-ray detector the side of radioscopy photographic attachment seen, and Fig. 3 is the equivalent circuit of the plate type X-ray detector seen of plane.In the present embodiment, as the lonizing radiation detection part, (following suitably be called " FPD ") is example with the plate type X-ray detector, simultaneously, as radiographic equipment, is that example illustrates with the radioscopy photographic attachment.
The radioscopy photographic attachment of present embodiment as shown in Figure 1, possess the bed board 1 of mounting subject M, to the X-ray tube 2 of this subject M irradiation X ray, detect the FPD3 of the X ray that sees through subject M.X-ray tube 2 is equivalent to the radiation exposure parts among the present invention, and FPD3 is equivalent to the lonizing radiation detection part among the present invention.
The radioscopy photographic attachment also possesses: control bed board 1 lifting and the bed board control part 4 that moves horizontally; The FPD control part 5 of the scanning of control FPD3; Have and make X-ray tube 2 produce the X-ray tube control part 7 of the high voltage generating unit 6 of tube voltage or tube current; Make the A/D converter 8 that takes out behind the x-ray detection signal digitized from FPD3 as charge signal; According to x-ray detection signal, carry out the image processing part 9 of various processing from A/D converter 8 outputs; The controller 10 of unified this each component part; The storage part 11 of the image after the stores processor etc.; Operator import the input part 12 of setting; With monitor 13 of image after the display process etc. etc.
Bed board control part 4 is carried out following control etc., that is: or make bed board 1 move horizontally, subject M is held to the camera site; Or the set positions subject M that makes bed board 1 lifting, rotates and move horizontally, expecting; Or take while moving horizontally; Or after taking end, move horizontally, withdraw from from the camera site.FPD controller 5 carry out with based on or FPD3 moved horizontally or make it around the relevant control of the mobile scanning of being carried out of the axon axle center of subject M rotation etc.High voltage generating unit 6 produces tube voltage or the tube current that the irradiation X ray is used, and supply X-ray tube 2, X-ray tube control part 7 carry out with based on or X-ray tube 2 is moved horizontally, or make it the setting control etc. in the irradiation visual field that around the axon axle center of subject M rotation is moved the relevant control of the scanning carried out or carried out the collimator (omitting diagram) of X-ray tube 2 sides.In addition, when X-ray tube 2 or FPD3 scanning, X-ray tube 2 and FPD3 carry out moving separately, opposite one another so that FPD3 can detect the X ray that irradiates from X-ray tube 2.
In addition, image processing part 9 possesses: the 1st image processing part 9a, according to x-ray detection signal, for exporting the 1st image, carry out the 1st Flame Image Process to x-ray detection signal; The 2nd image processing part 9b, carry out the 1st image exported after the 1st Flame Image Process according to the pixel arrangement figure of the configuration information of expression pixel and by the 1st image processing part 9a, for exporting the 2nd image, carry out the 2nd Flame Image Process of the processing that comprises the amount of pixels that is used to reduce the 1st image at least; With the 3rd image processing part 9c,,, the 1st image is carried out the 3rd Flame Image Process (with reference to Fig. 1, Fig. 4) for exporting the 3rd image according to the 1st image that is undertaken by the 1st image processing part 9a exporting after the 1st Flame Image Process.In addition, handle with the concrete signal of Fig. 4, each image processing part 9a～9c of Fig. 5 aftermentioned.With Fig. 7～Figure 13 aftermentioned pixel arrangement figure.The 1st image processing part 9a is equivalent to the 1st Flame Image Process parts among the present invention, and the 2nd Flame Image Process parts 9b is equivalent to the 2nd Flame Image Process parts among the present invention, and the 3rd image processing part 9c is equivalent to the 3rd Flame Image Process parts among the present invention.
In addition, storage part 11 possesses: write the 1st image exported after the 1st Flame Image Process is carried out in back storage by the 1st image processing part 9a the 1st image storage part 11a; Become the uniform irradiation image of uniform irradiation image on basis of loss revisal figure described later or pixel arrangement figure with storage part 11b (with reference to Fig. 1, Fig. 4) with storage.And uniform irradiation image storage part 11b as shown in Figure 4, is made of with storage part 11B with the pixel arrangement figure of storage part 11A and storage pixel allocation plan the loss revisal figure that stores loss revisal figure.
FPD3 is made of with the thin film transistor (TFT) TFT that is formed on the glass substrate 31 glass substrate 31 as shown in Figure 2.With regard to thin film transistor (TFT) TFT, as Fig. 2, shown in Figure 3, form a plurality of switch elements 32 (for example, 3072 * 3072) with the rectangular arrangement of longitudinal and transverse formula 2 dimensions, on each carrier collecting electrode 33, be separated from each other and form switch element 32.That is, FPD3 still is 2 dimension array radiation detectors.
As shown in Figure 2, lamination forms X ray induction type quasiconductor 34 on carrier collecting electrode 33, and as Fig. 2, shown in Figure 3, carrier collecting electrode 33 is connected in the source S of switch element 32.When gate drivers 35 connects many grid bus 36, each grid bus 36 is connected in the grid G of switch element 32.On the other hand, as shown in Figure 3, many single data bus 39 when amplifier 38 is connected in the multiplexer 37 that is output as 1 signal after collecting charge signal, as Fig. 2, shown in Figure 3, is connected in each data/address bus 39 drain D of switch element 32.
To omitting under the state that illustrated public electrode applies bias voltage, by applying the voltage of (or becoming 0V) grid bus 36, make the grid ON (conducting) of switch element 32, carrier collecting electrode 33 will read into data/address bus 39 through the source S and the drain D of switch element 32 by the charge signal (carrier wave) of the X ray of injecting in the detection faces side after 34 conversions of X ray induction type quasiconductor.In addition, before making switch element ON, charge signal is by the temporary transient savings storage of capacitor (omitting diagram).Amplify the charge signal that reads into each data/address bus 39 by amplifier 38, export after collecting into 1 charge signal by multiplexer 37.Behind the charge signal digitized of A/D converter 8, export as x-ray detection signal with output.
Below, with reference to block diagram, Fig. 5, Fig. 6, the flow chart of Figure 12, Figure 13 and the key diagram of Fig. 7～Figure 11 of Fig. 4, illustrate that a series of signal of each image processing part 9a～9c of present embodiment is handled and pixel arrangement figure.Fig. 4 is the block diagram that the data flow of the concrete structure of each image processing part 9a～9c and each image etc. is shown, Fig. 5 is the flow chart of a series of signal processing that each image processing part 9a of expression～9c carries out, Fig. 6 is that expression is used for the flow chart that a series of signal that the conventional images handling part of the comparison of Fig. 5 carries out is handled, Fig. 7 is expression forms the flow process of loss revisal figure and pixel arrangement figure according to the uniform irradiation image a key diagram, Fig. 8 is the key diagram of the loss pixel in the pattern ground expression uniform irradiation image, Fig. 9 is the key diagram of the loss pixel in the pattern ground explanation uniform irradiation image and the pixel that should dispose, Figure 10 is the key diagram of pattern ground expression loss revisal figure, Figure 11 is the key diagram of pattern ground expression configuration pixel map, Figure 12 is the flow chart that expression comprises the series of preprocessing that forms pixel arrangement figure, and Figure 13 is the flow chart of loss revisal that is used to reduce amount of pixels of the step T1 of more specifically presentation graphs 5.In addition, in this processing, being that example illustrates by beginning after the detected x-ray detection signal of FPD3 from A/D converter 8 digitizeds.
At first, a series of signal processing (with reference to Fig. 6) that existing image processing part is carried out is described.
(step S101) offset compensation
Sometimes with not shine X ray irrelevant, because of dark current overlapping deviant on image.Therefore, obtain the X ray migrated image in non-when irradiation in advance.Execution deducts the offset compensation of above-mentioned migrated image from the original image based on x-ray detection signal.
(step S102) revisal that gains
At capacitor (omit diagram) or constitute in each detecting element of switch element 32 and have error in the accumulative quantity of electric charge, therefore, both just also there was error based on the signal level (pixel value) of the pixel of the x-ray detection signal of each detecting element.For reducing this error, for example regulate the gain of the amplifier (amplifier) 38 of each detecting element respectively, carry out the gain revisal that makes the outlet side unanimity.This gain revisal also is called " calibration (correction) ".Specifically, obtain the output after the amplification in advance, adjust gain so that its outlet side unanimity.
(step S103) loses revisal
Compare with signal level on every side by the signal level of the detected pixel of detecting element, have very high or low situation.Therefore, in this case, execution is replaced with pixel value on every side or is carried out the loss revisal of interpolation with the value that calculates according to pixel value on every side.
(step S104) various revisals are handled
Various revisals beyond execution in step S101～S103 are handled.Handle as concrete revisal, for example have; Be used for the leakage current revisal of revisal along the leakage current of data/address bus 39 generations; About the entire image/about the revisal of the signal level difference (luminance difference) that produces; The revisal of the time lag that the time delay of FPD3 causes; Revisal to the line noise of each grid bus 36 overlapping different value; Perhaps revisal of static noise etc.The individual diversitys of corresponding X ray induction type quasiconductor 34 or FPD3 etc. comprise the offset compensation of above-mentioned step S101, the gain revisal of step S102, the loss revisal of step S103, the kind difference that quantity that revisal is handled or revisal are handled.Therefore, the kind of the quantity of revisal processing or revisal processing limits especially.In addition, if do not need the revisal of step S104 to handle, but also skips steps S104.The revisal processing of step S101～S104 is the Flame Image Process about the characteristic of FPD3.And the processing after the step S105 described later is the Flame Image Process in order to diagnose easily.
(step S105) various Flame Image Process
Before the gamma conversion of step S106, carry out step S106 described later～S108 various Flame Image Process in addition.As concrete Flame Image Process, for example have double energy subtraction (デ ユ ア Le エ Na ジ-サ Block ト ラ Network シ, Application: dual energy subtraction) etc.Corresponding position or the diagnostic purpose taken comprises the gamma conversion of step S106 described later, the frequency processing of step S107, the auto brightness adjustment of step S108, the kind difference of the quantity of Flame Image Process or Flame Image Process.Therefore, the kind of the quantity of Flame Image Process or Flame Image Process does not limit especially.In addition, if do not need the Flame Image Process of step S105, but also skips steps S105.
The conversion of (step S106) gamma
Carry out the gamma curves conversion.Specifically, the contrast of nonlinearity that causes for the characteristic of image output devices such as revisal monitor or film developing machine or additional special brightness range and carry out the conversion process of signal intensity.
(step S107) frequency processing
Execution is handled corresponding to the spatial frequency of taking the position.Specifically, deep or light shade or shape shade are emphasized in equilibrium well for granularity is worsened, and carry out the processing of emphasizing or reduce specific frequency components.
The adjustment of (step S108) auto brightness
As the normal pixel that is not the loss pixel, under the situation that has great pixel value or minimum pixel value, for consistent, to remaining whole pixels with this pixel, the execution auto brightness is adjusted, and is used to be used for determining the calibration of the scope from maximum to minima.
Handle in (with reference to Fig. 6) at a series of signal that the existing image processing part that with above-mentioned step S101～S108 is representative is carried out, the image of having carried out as the auto brightness adjustment of Flame Image Process at last becomes the radioscopic image that finally obtains.Here, the image of certifiable image, exportable demonstration when carrying out location confirmation becomes and carried out the radioscopic image of handling in Overall Steps S101～S108.In other words, for location confirmation, Overall Steps S101～S108 can begin to confirm image after finishing.Therefore, in the present embodiment, as shown in Figure 4, output shows preview image.
As shown in Figure 4, image processing part 9 is divided into the 1st image processing part 9a, the 2nd image processing part 9b and the 3rd image processing part 9c, each Flame Image Process of above-mentioned existing step S101～S108 also conforms to each image processing part 9a～9c, is divided into the 1st Flame Image Process, the 2nd Flame Image Process and the 3rd Flame Image Process.Example at differentiating method concrete shown in the flow chart of Fig. 5.
According to by the detected x-ray detection signal of FPD3, for exporting the 1st image, the 1st image processing part 9a is to carrying out the 1st Flame Image Process by the detected x-ray detection signal of FPD3.To deliver to the 1st image storage part 11a of storage part 11 by the 1st image via controller 10 that the 1st image processing part 9a carries out exporting after the 1st Flame Image Process, temporarily be stored in the 1st image storage part 11a after writing the 1st image.Read the 1st image of storage, via controller 10 is delivered to the 2nd image processing part 9b or the 3rd image processing part 9c.According to the 1st image, for exporting the 2nd image and the 3rd image, the 2nd image processing part 9b is in the 2nd Flame Image Process of carrying out the processing that comprises the amount of pixels that is used to reduce the 1st image at least, and the 3rd image processing part 9c carries out the 3rd Flame Image Process to the 1st image.The 3rd image processing part 9c establishes the radioscopic image of the 3rd image for finally obtaining.Output shows the 2nd image and the 3rd image of this output in monitor 13.In addition, in case of necessity, with regard to the 2nd image and the 3rd image, also can be identical with the 1st image, temporarily be stored in the storage part 11.In addition, in case of necessity, with regard to the 1st image, also can be identical with the 2nd image and the 3rd image, output shows in monitor 13.
Here, in the 2nd Flame Image Process, except that the 1st above-mentioned image, also according to the uniform irradiation image of storage part 11 with the pixel arrangement figure of storage part 11b with the pixel arrangement figure that stores among the storage part 11B, export the 2nd image.This pixel arrangement figure represents the configuration information (with reference to Fig. 1) of pixel.
In the present embodiment, pixel arrangement figure makes pixel value that should dispose the pixel after the amount of pixels minimizing and the configuration information that reduces the preceding corresponding association of a plurality of locations of pixels information based on amount of pixels respectively, in the 2nd Flame Image Process, execution is used to reduce the processing of the amount of pixels of the 1st image, simultaneously according to corresponding related these pixel values separately of a plurality of locations of pixels information institute before the reducing of pixel arrangement figure, respectively to this pixel value of pixel arrangement after the amount of pixels minimizing based on amount of pixels.
Promptly, in the 2nd Flame Image Process, be used to reduce the processing of the amount of pixels of the 1st image by execution, simultaneously, these pixel values separately according to the corresponding association of a plurality of locations of pixels information institute before the reducing of pixel arrangement figure based on amount of pixels, these pixel values of pixel arrangement after respectively amount of pixels being reduced, making becomes the loss revisal that comprises the amount of pixels that is used to reduce the 1st image (with reference to the step T1 of Fig. 5 and each step W1 of Figure 13～W5).
In addition, as described later shown in the flow chart of Fig. 5, after the output result of the 2nd image of after carrying out the 2nd Flame Image Process, exporting by the 2nd image processing part 9b, carry out the 3rd Flame Image Process that the 3rd image processing part 9c carries out to the 1st image, the output result of corresponding the 2nd image carries out the 3rd Flame Image Process.That is,, export the 2nd image earlier for confirming the 3rd image.In the present embodiment, as an example of the way of output of the 2nd image, preview shows in monitor 13.
At first, a series of signal of key diagram 5 is handled.
(step S1) offset compensation
Since identical with existing step S101, so omit its explanation.
(step S2) revisal that gains
Since identical with existing step S102, so omit its explanation.But, establish step S1, S2 the 1st Flame Image Process that is treated to the 1st image processing part 9a execution before.Therefore, become the 1st image through the image that obtains after offset compensation, the gain revisal.The 1st image temporarily is stored in the 1st image with among the storage part 11a.Operation before this step S1, the S2 is equivalent to the 1st Flame Image Process operation among the present invention.As mentioned above, before the 3rd Flame Image Process, formerly carry out the 2nd Flame Image Process.
(step T1) reduces the loss revisal of amount of pixels
Execution is used to reduce the loss revisal of the amount of pixels of the 1st image.With regard to the loss revisal that reduces this amount of pixels, aftermentioned at length in Figure 13.In addition, by reducing amount of pixels, the image that output resolution ratio is low.In the present embodiment, whole the 1st image is arranged by 3072 * 3072 pixel values in length and breadth and is constituted, and by reducing the processing of amount of pixels, the image that constitutes is arranged in output by 768 * 768 pixel values.
(step T2) various revisals are handled
Except process object is not the image of 768 * 768 after original 3072 * 3072 image but amount of pixels reduce, since identical with existing step S104, so omit its explanation.
(step T3) Flame Image Process 1
With regard to the image of 768 * 768 after this amount of pixels reduces, different with original 3072 * 3072 image, only executing location is confirmed required processing.Here, as essential various Flame Image Process, only carries out image processing 1.In addition, with regard to the processing after the various Flame Image Process,, only carry out the gamma conversion of step T4 described later and the auto brightness adjustment of step T5 here as essential processing.Therefore, skip the frequency processing of existing step S10.
The conversion of (step T4) gamma
Except process object is not the image of 768 * 768 after original 3072 * 3072 image but amount of pixels reduce, since identical with existing step S106, so omit its explanation.
The adjustment of (step T5) auto brightness
Except process object is not the image of 768 * 768 after original 3072 * 3072 image but amount of pixels reduce, since identical with existing step S108, so omit its explanation.But, establish step T1～T5 the 2nd Flame Image Process that is treated to the 2nd image processing part 9b execution before.Therefore, become the 2nd image through the image that obtains after the loss revisal that reduces amount of pixels, various revisal processing, Flame Image Process 1, gamma conversion, the auto brightness adjustment.Operation before this step T1～T5 is equivalent to the 2nd Flame Image Process operation among the present invention.
(step M1) preview shows
Show the 2nd image by output in monitor 13, carry out the preview demonstration that is used to confirm the 3rd image.After the output result of the 2nd image, carry out the step U1～U6 of the 3rd Flame Image Process that is equivalent to the 3rd image processing part 9c execution.In addition, in step U1 described later～U6, the 1st picture specification with 3072 * 3072 is as process object.
(step U1) loses revisal
Since identical with existing step S103, so omit its explanation.
(step U2) various revisals are handled
Since identical with existing step S104, so omit its explanation.
(step U3) various Flame Image Process
Since identical with existing step S105, so omit its explanation.
The conversion of (step U4) gamma
Since identical with existing step S106, so omit its explanation.
(step U5) frequency processing
Since identical with existing step S107, so omit its explanation.
The adjustment of (step U6) auto brightness
Since identical with existing step S108, so omit its explanation.But, establish step U1～U6 the 3rd Flame Image Process that is treated to the 3rd image processing part 9c execution before.Therefore, become the 3rd image through the image that obtains after loss revisal, various revisal processing, various Flame Image Process, gamma conversion, frequency processing, the auto brightness adjustment.Operation before this step U1～U6 is equivalent to the 3rd Flame Image Process operation among the present invention.
Below, with reference to the loss revisal of the minimizing amount of pixels of Fig. 7～Figure 13 pixels illustrated allocation plan or above-mentioned step T1.
(step V1) obtains the uniform irradiation image
Shown in the flow chart of Figure 12, ask the uniform irradiation image.As shown in Figure 7, the symbol with this uniform irradiation image is made as A.Before handling, a series of signal that each image processing part 9a～9c of Fig. 5 carries out obtains the uniform irradiation image A in advance in advance.The uniform irradiation image A be not with subject M mounting on bed board 1 and whole FPD3 is shone the resulting image of X ray equably.This uniform irradiation image is stored in the uniform irradiation image with among the storage part 11a.
(step V2) searches the coordinate of loss pixel
As mentioned above, the signal level of pixel is compared with signal level on every side, has very high or low situation.In this case, establish have very high or low signal level (being pixel value) pixel for the loss pixel.When detecting very high or low pixel value, set predetermined setting (threshold value) or prescribed limit, obtaining becomes the poor of object pixels value and pixel value on every side, surpass threshold value or outside prescribed limit the time in this difference, become the object pixels value compare with pixel value on every side very high or low, and be configured to this object pixels for the loss pixel.As shown in Figure 8, the symbol of establishing this loss pixel is D, and the coordinate of establishing certain loss pixel D is (x
d, y
d).
If as coordinate (x
d, y
d) search the coordinate of other loss pixel D like that, then, as shown in Figure 7, form loss revisal figure B and pixel arrangement figure C according to the coordinate of these loss pixels D.Loss revisal figure B becomes figure as shown in figure 10.
In the present embodiment, as shown in Figure 9, establish in length and breadth 1 group that is arranged as of 4 * 4 pixel value, in this group, establishing loss pixel D (is coordinate (x here
d, y
d) the loss pixel) be top left pixel.That is, when establishing top left pixel,, the loss pixel D as top left pixel carried out lose revisal according to a plurality of (among Fig. 9 the being 15) pixel around in this group for the benchmark of loss pixel D.In the present embodiment, replace to the coordinate that loses pixel, carry out the loss revisal by pixel value with 1 pixel in the surrounding pixel.In Fig. 9, in the loss pixel D of shadow representation, become the pixel (promptly should be configured in the pixel among the loss pixel D) in replacement source in the shadow representation loss revisal with left oblique line as top left pixel with right oblique line.In addition, in Fig. 9, the coordinate of establishing the pixel that should dispose is (x
D+1, y
D+1).
So loss revisal figure B illustrates the coordinate (x that should be disposed at loss pixel D as shown in figure 10
d, y
d) on the coordinate (x of pixel
D+1, y
D+1) (with reference to the shade of the left oblique line among Figure 10).And, by having coordinate (x
D+1, y
D+1) the pixel value that should dispose be configured in the coordinate (x of loss pixel D
d, y), the pixel value of loss pixel D is replaced to the pixel value that should dispose, carry out the loss revisal of above-mentioned step U1.In addition, in the loss revisal figure of Figure 10 B, to not meeting the normal pixel of loss pixel D, use " ,-" and expression.This loss revisal figure B is stored in the uniform irradiation image uses the loss revisal figure of storage part 11a with among the storage part 11A.With regard to coordinate (x
d, y
d) in addition loss pixel D, by reading and with reference to being stored in the loss revisal figure B of loss revisal figure with storage part 11A, the loss revisal of execution in step U1.
This loss revisal figure B is made of the arrangement of the pixel value identical with 3072 * 3072 original images, but then, the image that is made of the arrangement of 768 * 768 pixel value is in length and breadth told in processing by deducting amount of pixels from 3072 * 3072 image (below be called " telling ").
(step V3) tells top left pixel
When telling like this, simultaneously per in length and breadth 4 pixel decimations form.As shown in Figure 9, as if being that benchmark is told, then become pixel arrangement figure C shown in Figure 11 with the top left pixel.Specifically, be not limited to lose pixel D, with regard to other normal pixel, also establish in length and breadth 1 group that is arranged as of 4 * 4 pixel value, in this group, only tell the pixel value and the coordinate thereof of top left pixel, cut on the same group around pixel.Therefore, as shown in figure 11,, tell 1 in transverse direction (x direction),---, x
D-4, x
d, x
D+4,---, 3069 totally 768 x coordinates.And, as shown in figure 11,, tell 1 in longitudinal direction (y direction),---, y
D-4, y
d, y
D+4,---, 3069 totally 768 y coordinates.
Is (step V4) top left pixel lost?
When this a series of telling, judge whether top left pixel is loss pixel D.If normal pixel then advances to step V5.If loss pixel D then advances to step V6.
(step V5) selects top left pixel
If top left pixel is normal pixel, then select this top left pixel, in pixel arrangement figure C, write the coordinate of top left pixel.
(step V6) selects the pixel beyond it
If top left pixel is loss pixel D, then select its normal pixel in addition, in pixel arrangement figure C, write the coordinate of this pixel.For example, as shown in Figure 9, has coordinate (x
d, y
d) loss pixel D be under the situation of top left pixel, in the group identical, from coordinate (x with this loss pixel D
d, y
d) in addition around pixel in, select 1 normal pixel.In Fig. 9, for example select to have coordinate (x
D+1, y
D+1) the pixel that should dispose, with this coordinate (x
D+1, y
D+1) write the coordinate (x of the loss pixel D of loss revisal figure B
d, y
d) the position.So, as shown in figure 11, in the pixel of telling, only write the coordinate (with reference to the shade of the left oblique line among Figure 11) of pixel on every side in position corresponding to loss pixel D.
(step V7) forms pixel arrangement figure
Like this, with regard to other pixel,, form pixel arrangement figure C by writing with same steps as among the pixel arrangement figure C.This pixel arrangement figure C is stored in the uniform irradiation image uses the pixel arrangement figure of storage part 11a with among the storage part 11B.By reading and, carrying out the loss revisal of the minimizing amount of pixels of above-mentioned steps T1 with reference to being stored in pixel arrangement figure with the pixel arrangement figure C among the storage part 11B.Be equivalent to pixel arrangement figure of the present invention in the operation of this step V7 and form operation.
According to the pixel arrangement figure C of such formation, carry out the loss revisal of the minimizing amount of pixels of following step T1.
(step W1) tells top left pixel
Shown in the flow chart of Figure 13, from 3072 * 3072 original images, tell 768 * 768 images.The method of telling is as described in the step V1, and simultaneously per in length and breadth 4 pixel decimations form.As a result, the visual field size of image is identical with original 3072 * 3072 image, and the low image of resolution is told.
(step W2) reference pixels allocation plan C
With reference to above-mentioned pixel arrangement figure C.
(step W3) disposes pixel value
Each pixel of 768 * 768 images of telling corresponds respectively to each pixel of pixel arrangement figure C corresponding to top left pixel.Therefore, the pixel value of pixel arrangement figure C is disposed in the pixel (being the pixel after amount of pixels reduces) after telling.At this moment, with regard to the loss pixel D (being the loss pixel after amount of pixels reduces) that tells, by being configured in the pixel value of the pixel (promptly should be configured in the pixel on the loss pixel D) that becomes the replacement source among the pixel arrangement figure C, carry out the processing that reduces amount of pixels, carry out the loss revisal simultaneously.
Like this, pixel arrangement figure C be make after the amount of pixels of telling into 768 * 768 images reduces pixel with reduce based on amount of pixels before 3072 * 3072 images in by the corresponding related respectively configuration informations of 16 (with reference to Fig. 9) locations of pixels information of 4 * 4 image constructions.Especially, in the present embodiment, in top left pixel is not under the situation of loss pixel D but normal pixel, make the normal pixel after amount of pixels reduces corresponding related respectively with the top left pixel that amount of pixels reduces in 16 preceding pixels, simultaneously, under the situation of top left pixel, make the loss pixel D after amount of pixels reduces corresponding related respectively, thereby constitute pixel arrangement figure C with the normal pixel that amount of pixels reduces in 16 preceding pixels for loss pixel D.And, reduce preceding normal pixel, the loss revisal of the minimizing amount of pixels of execution in step T1 by loss pixel D configuration and replacement pixel amount after amount of pixels is reduced.
According to the present embodiment that as above constitutes, both be as rudimentary machine or universal machine, to have installed under the situation of general-purpose operation treatment circuit, be used to export the 2nd Flame Image Process of the 2nd image, so can make output the 2nd image time decreased before corresponding to the amount of pixels that reduces at least owing to comprise the processing of the amount of pixels that reduces by the 1st image at least.As a result, for example, can reduce the image output time before of confirming usefulness.Thus, for example also can reduce the location confirmation time before.As a result, also can seek to improve checking efficiency, reduce burden subject M.
Here, in the 2nd Flame Image Process, except that the 1st above-mentioned image, also export the 2nd image according to pixel arrangement figure C.This pixel arrangement figure C illustrates the configuration information of pixel as shown in figure 11.Therefore, in the 2nd Flame Image Process, compare when only exporting the 2nd image according to the 1st image, the situation when both export the 2nd image according to the 1st image and location of pixels figure C can further reduce the time before output the 2nd image.As a result, can reduce the image output time before of confirming usefulness.
In the present embodiment, pixel arrangement figure C makes the pixel value of the pixel arrangement after the reply amount of pixels reduces and reduces the corresponding related respectively configuration information of preceding a plurality of locations of pixels information based on amount of pixels, in the 2nd above-mentioned Flame Image Process, carry out to reduce the processing (with reference to telling of the top left pixel of step W1) of the amount of pixels of the 1st image, simultaneously according to corresponding related these pixel values separately (with reference to " the reference pixels allocation plan " of step W2) of a plurality of locations of pixels information institute before the reducing of pixel arrangement figure C, respectively to these pixel values of pixel arrangement (with reference to step W3) after the amount of pixels minimizing based on amount of pixels.Promptly, in the 2nd Flame Image Process, by carrying out the processing (with reference to step T1) of the amount of pixels that reduces by the 1st image, simultaneously according to these pixel values separately of the corresponding association of a plurality of locations of pixels information institute before the reducing of pixel arrangement figure C based on amount of pixels, these pixel values of pixel arrangement after respectively amount of pixels being reduced, the feasible loss revisal (step T1) that comprises the amount of pixels that reduces by the 1st image.With regard to common loss revisal, owing to relatively spend the processing time, so, can reduce the time before resulting the 2nd image output of loss revisal of the amount of pixels by being used to reduce the 1st image by carrying out the 2nd Flame Image Process according to this pixel arrangement figure C.
In addition, in the present embodiment, as the flow chart of Figure 12, be pre-formed pixel arrangement figure C before, can in the preparation of the 2nd Flame Image Process, possess by flow chart (a series of signal that each image processing part 9a～9c carries out is handled) at Fig. 5.
The invention is not restricted to above-mentioned embodiment, can following such enforcement of being out of shape.
(1) in the above-described embodiments, be that example illustrates with radioscopy photographic attachment shown in Figure 1, but the present invention for example also go for being provided in the radioscopy photographic attachment on the C type arm.In addition, the present invention is also applicable to X ray CT device.
(2) in the above-described embodiments, be that example illustrates with plate type X-ray detector (FPD) 3, if but normally used X ray detection part, then the present invention is also applicable.
(3) in the above-described embodiments, X-ray detector with the detection X ray is that example illustrates, but the present invention as detections such as ECT (Emission Computed Tomography) devices from example the gamma-ray gamma-ray detector that the subject that drops into radiosiotope (RI) radiates, if detect the radiation detector of lonizing radiation, then do not limit especially.In the same manner, the present invention is as example in the above-mentioned ECT device, if by detecting the device that lonizing radiation are taken, then do not limit especially.
(4) in the above-described embodiments, FPD3 be possess lonizing radiation (among the embodiment for X ray) induction type semi-conductive, by lonizing radiation induction type quasiconductor incident lonizing radiation are directly changed into the detector of the direct conversion type of charge signal, but also can be possess possess when photoinduction type quasiconductor substitutes the lonizing radiation induction type flasher, by flasher incident lonizing radiation are converted to light, detector that light after will changing by photoinduction type quasiconductor converts the indirect conversion type of charge signal to.
(5) in the above-described embodiments, in the stage midway of Flame Image Process, temporarily being stored in this image of handling with storage part 11 grades midway is the medium of representative, if the Flame Image Process midway before the stage is the 1st Flame Image Process, but the Flame Image Process that also can establish before the stage that is stored in before or after the medium is the 1st Flame Image Process.In addition, do not need a stage midway that fixes on Flame Image Process temporarily to be stored in the medium.
(6) in the above-described embodiments, output shows the output of the 2nd image in monitor 13, carries out preview and shows, still, with regard to the way of output of the 2nd image, the preview that is not limited in the monitor 13 shows.For example also be output to printer.
(7) in the above-described embodiments, as the processing of the amount of pixels that is used to reduce the 1st image, be that example illustrates to tell, but, for example,, then do not limit especially if be used to reduce the processing of amount of pixels by reading carrier wave simultaneously or specifying the localized area to reduce amount of pixels etc.
(8) in the above-described embodiments, in the 2nd Flame Image Process, comprise the loss revisal of the amount of pixels that is used to reduce the 1st image at least, if handle but in the 2nd Flame Image Process, comprise the amount of pixels that reduces by the 1st image at least, then with regard to the processing of the amount of pixels that reduces by the 1st image, be not limited to lose revisal.For example, reduce the also time lag revisal of processing of the amount of pixels of the 1st image.In this case, in the 2nd Flame Image Process, comprise the time lag revisal of the amount of pixels that reduces by the 1st image at least.In addition, corresponding to the contents processing of the amount of pixels that reduces by the 1st image, the mode of pixel arrangement figure that is used for this processing is also different.
(9) in the above-described embodiments, in the 2nd Flame Image Process, also comprise other processing (processing that the step T2 of Fig. 5 is later) except that the loss revisal of the amount of pixels that reduces by the 1st image, but also can after the loss revisal of only having carried out the amount of pixels that reduces by the 1st image, export as the 2nd image.
(10) in the above-described embodiments,, carry out the loss revisal of the amount of pixels that has reduced by the 1st image, but also can carry out by carrying out interpolation with the value that calculates according to pixel value on every side by replacing with pixel value on every side.Carrying out under the situation of interpolation with the value that calculates according to pixel value on every side, for example, preferably, by using the computing relevant to come interpolation with the statistic of on every side pixel value, with meansigma methods interpolation, with the median interpolation of pixel value on every side with pixel value on every side
(11) in the above-described embodiments, in order to reduce the amount of pixels of the 1st image, per 4 pixel decimations simultaneously in length and breadth, but also can to outside each pixel decimation.For example, also can be in length and breadth per 8 pixel decimations simultaneously, also can indulge per 8 pixels, horizontal per 4 pixel decimations.
(12) in the above-described embodiments,, make top left pixel become the benchmark of loss pixel, but pixel that also can be in addition is as the benchmark that loses pixel in the loss revisal of the amount of pixels that is used for reducing the 1st image.For example, also can make center pixel become the benchmark of loss pixel.
(13) in the above-described embodiments, loss revisal in the amount of pixels that is used for reducing the 1st image, select 1 normal pixel in group to replace, but under 1 situation about also not having of the normal pixel in this group, the normal pixel that also can be chosen in the most approaching loss pixel in the group is in addition replaced.The situation of losing revisal by interpolation is also identical.
Utilizability on the industry
As mentioned above, the present invention be applicable to the radioactive ray that the general-purpose operation treatment circuit has been installed as rudimentary machine or universal machine penetrate the picture device.
Claims (5)
1. a radiation-ray camera pick-up device obtains radiation image according to radiation detection signal, it is characterized in that possessing:
The radiation exposure parts are to subject irradiation lonizing radiation;
The lonizing radiation detection part detects the lonizing radiation that seen through subject;
The 1st Flame Image Process parts according to by the detected radiation detection signal of lonizing radiation detection part, for exporting the 1st image, are carried out the 1st Flame Image Process to radiation detection signal;
The 2nd Flame Image Process parts, carry out the 1st image exported after the 1st Flame Image Process according to the pixel arrangement figure of expression pixel arrangement information and by the 1st Flame Image Process parts, for exporting the 2nd image, carry out the 2nd Flame Image Process of the processing that comprises the amount of pixels that is used to reduce the 1st image at least; With
The 3rd Flame Image Process parts, after the output result of the 2nd image of after carrying out the 2nd Flame Image Process, exporting by the 2nd Flame Image Process parts, according to the 1st image that is undertaken by the 1st Flame Image Process parts exporting after the 1st Flame Image Process, for exporting the 3rd image, output result according to the 2nd image, the 1st image is carried out the 3rd Flame Image Process, and the 3rd image is made as the radiation image that finally obtains.
2. radiation-ray camera pick-up device according to claim 1 is characterized in that:
Described pixel arrangement figure is the corresponding respectively configuration informations after related of a plurality of locations of pixels information before making pixel value that the pixel after amount of pixels reduced should dispose and reducing based on amount of pixels, constitute the described second Flame Image Process parts, make in described the 2nd Flame Image Process, execution is used to reduce the processing of the amount of pixels of described the 1st image, simultaneously according to the corresponding related described pixel value separately of a plurality of locations of pixels information institute before the reducing of pixel arrangement figure, respectively to these pixel values of pixel arrangement after the amount of pixels minimizing based on amount of pixels.
3. a radiation detection signal processing method according to detected radiation detection signal behind the irradiation subject, is carried out the signal processing that obtains radiation image, it is characterized in that described signal processing possesses:
The 1st Flame Image Process operation according to radiation detection signal, for exporting the 1st image, is carried out the 1st Flame Image Process to radiation detection signal;
The 2nd Flame Image Process operation, according to the 1st image of exporting after the 1st Flame Image Process in pixel arrangement figure that represents pixel arrangement information and the 1st Flame Image Process operation, for exporting the 2nd image, carry out the 2nd Flame Image Process of the processing that comprises the amount of pixels that is used to reduce the 1st image at least; With
The 3rd Flame Image Process operation, after the output result of the 2nd image of in the 2nd Flame Image Process operation, exporting after the 2nd Flame Image Process, according to the 1st image of exporting after the 1st Flame Image Process in the 1st Flame Image Process operation, for exporting the 3rd image, output result corresponding to the 2nd image, the 1st image is carried out the 3rd Flame Image Process, and the 3rd image is made as the radiation image that finally obtains.
4. radiation detection signal processing method according to claim 3 is characterized in that:
Described signal processing also possesses the pixel arrangement figure that is used to form described pixel arrangement figure and forms operation.
5. according to claim 3 or 4 described radiation detection signal processing methods, it is characterized in that:
Described pixel arrangement figure is the corresponding respectively configuration informations after related of a plurality of locations of pixels information before making pixel value that the pixel after amount of pixels reduced should dispose and reducing based on amount of pixels, in described the 2nd Flame Image Process operation, carry out the processing of the amount of pixels that reduces described the 1st image, simultaneously according to the corresponding related described pixel value separately of a plurality of locations of pixels information institute before the reducing of pixel arrangement figure, respectively to these pixel values of pixel arrangement after the amount of pixels minimizing based on amount of pixels.
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| PCT/JP2005/019793 WO2007049348A1 (en) | 2005-10-27 | 2005-10-27 | Radiographic imaging device and radiation detection signal processing method |
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| JP5429029B2 (en) * | 2010-04-30 | 2014-02-26 | 株式会社島津製作所 | Radiation imaging device |
| JP2013126530A (en) * | 2011-11-15 | 2013-06-27 | Toshiba Corp | Image processing device and method |
| CN104224126A (en) * | 2014-09-17 | 2014-12-24 | 中国人民解放军空军总医院 | Device and system for diagnosing skin symptoms |
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| EP0487243B1 (en) * | 1990-11-19 | 1998-02-25 | General Electric Company | Computed tomography |
| CN1572251A (en) * | 2003-06-20 | 2005-02-02 | 株式会社岛津制作所 | Radiographic apparatus |
| CN1627099A (en) * | 2003-10-08 | 2005-06-15 | 株式会社岛津制作所 | Radiographic apparatus and radiation detection signal processing method |
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| JP3805421B2 (en) * | 1996-03-01 | 2006-08-02 | オリンパス株式会社 | Pixel defect correction device |
| JP2002248095A (en) * | 2000-12-20 | 2002-09-03 | Canon Inc | X-ray digital photographing instrument |
| JP2005205086A (en) * | 2004-01-26 | 2005-08-04 | Hitachi Medical Corp | X-ray diagnosis apparatus |
| JP4574181B2 (en) * | 2004-01-30 | 2010-11-04 | キヤノン株式会社 | Image processing method and apparatus |
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| EP0487243B1 (en) * | 1990-11-19 | 1998-02-25 | General Electric Company | Computed tomography |
| CN1572251A (en) * | 2003-06-20 | 2005-02-02 | 株式会社岛津制作所 | Radiographic apparatus |
| CN1627099A (en) * | 2003-10-08 | 2005-06-15 | 株式会社岛津制作所 | Radiographic apparatus and radiation detection signal processing method |
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