Summary of the invention
The object of the present invention is to provide a kind of LCD display effect pick-up unit and method, defective such as effectively solve that existing manual detection LCD display effect workload is big, labour intensity is big, accuracy of detection is limited and efficient is low.
To achieve these goals, the invention provides a kind of LCD display effect pick-up unit, comprising:
Acquisition module is used for gathering from display screen the light signal of picture to be measured, this light signal is converted into electric signal and sends;
Detection module, be connected with described acquisition module, be used for the brightness and the colourity of described picture pixel to be measured being analyzed and being handled, for exceeding luminance deviation and/or the chromaticity distortion output pixel abnormal information that preestablishes threshold range according to described electric signal.
Also comprise: signal output module, described signal output module is connected with detection module, is used for sending picture signal to be measured to described display screen.
To achieve these goals, the present invention also provides a kind of LCD display effect detection method, comprising:
Step 100, gather the light signal of picture to be measured, this light signal is converted to electric signal and sends from display screen;
Step 200, extract the brightness and the chrominance information of pixel and handle, obtain luminance deviation and chromaticity distortion, for exceeding luminance deviation and/or the chromaticity distortion that preestablishes threshold range, output pixel abnormal information according to described electric signal.
Also comprise before the described step 100: export picture signal to be measured to described display screen.
Described step 200 is specially:
Extract the brightness and the chrominance information of pixel according to described electric signal;
The brightness and the chrominance information that contrast each pixel obtain luminance deviation and chromaticity distortion;
To exceeding luminance deviation and/or the chromaticity distortion that preestablishes threshold range, output pixel abnormal information; To not exceeding luminance deviation and/or the chromaticity distortion that preestablishes threshold range, output pixel normal information.
Also comprise after the described step 200:
Historical data in step 300, the luminance deviation that will exceed threshold range and/or chromaticity distortion and the database contrasts, if record is arranged, then carries out diagnostic process according to corresponding diagnostic message in the described database; If no record, then execution in step 310;
Step 310, the abnormal pixel that luminance deviation and/or chromaticity distortion are exceeded threshold range are analyzed, and definite diagnostic message, execution in step 330;
Step 320, the abnormal data and the diagnostic message of described abnormal pixel correspondence stored in the database;
Step 330, end.
Big at existing manual detection LCD picture quality workload, labour intensity is big, defective such as the limited and efficient of accuracy of detection is low, the invention provides a kind of LCD display effect pick-up unit and method, by gathering the light signal of picture to be measured, this light signal is converted into electric signal, and extract the brightness and the chrominance information of pixel according to this electric signal, the brightness of each pixel and chrominance information handled obtain chromaticity distortion and luminance deviation, whether exceed the setting threshold scope according to chromaticity distortion and/or luminance deviation and judge whether pixel is normal, thereby reach the purpose that detects picture quality.The present invention is easy to realize to the detection automaticity height of picture quality, the accuracy of detection height, and the efficient height has reduced labour intensity, has guaranteed product quality.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Embodiment
Fig. 1 is a LCD display effect pick-up unit structural representation of the present invention, as shown in Figure 1, LCD display effect pick-up unit of the present invention comprises charge-coupled image sensor 1 as acquisition module (Charge CoupledDevice is called for short CCD), detection module 2 and as the signal source 3 of signal output module.Charge-coupled image sensor 1 places the top of LCD display display screen 4, is used for gathering the light signal of display screen 4 pictures to be measured, and this light signal is converted into electric signal; Detection module 2 is connected with charge-coupled image sensor 1, receive electric signal, extract the brightness and the chrominance information of pixel then according to electric signal, and the brightness of pixel and chrominance information handled obtain luminance deviation and chromaticity distortion, whether exceed the judgement of setting threshold scope display quality, the i.e. quality of display effect according to luminance deviation and chromaticity distortion.Signal source 3 connection detection module 2 and display screen 4, the opening and closing of control display screen 4, and picture signal to be measured exported to display screen 4.
Big at existing manual detection LCD picture quality workload, labour intensity is big, defective such as the limited and efficient of accuracy of detection is low, the invention provides a kind of LCD display effect pick-up unit, by acquisition module is set, the light signal of the picture to be measured that collects is converted into electric signal and sends to detection module, detection module extract according to this electric signal picture to be measured pixel brightness and chrominance information and handle and obtain luminance deviation and chromaticity distortion, whether exceed the setting threshold scope according to luminance deviation and/or chromaticity distortion and judge whether pixel is normal, thereby reach the purpose that detects picture quality.The present invention is easy to realize to the detection automaticity height of picture quality, the accuracy of detection height, and the efficient height has reduced labour intensity, has guaranteed product quality.
Before implementing the present invention, at first set up database.Store the monochrome information and the chrominance information of pixel under each picture to be measured of normal condition in the database, and normal brightness deviation between the pixel and standard colorimetric deviation, and established standards luminance deviation and the standard colorimetric deviation variation range of allowing, i.e. setting threshold scope.In addition, also according to historical experience, unusual luminance deviation and unusual chromaticity distortion in database under the rule of thumb known various abnormal conditions of storage between the unusual monochrome information of pixel and unusual chrominance information and abnormal pixel and the abnormal pixel, between abnormal pixel and the normal pixel, and with every kind of diagnostic message that abnormal conditions are corresponding.
In the present embodiment, signal source 3 control display screen 4 are opened, and picture to be measured is exported to display screen 4, and display screen 4 shows picture to be measured.Charge-coupled image sensor 1 begins to gather the light signal of picture to be measured, this light signal is converted to electric signal, and this electric signal exported to detection module 2, detection module 2 receives electric signal, extracts the brightness and the chrominance information of each pixel of display screen 4 according to this electric signal.Detection module 2 is selected a certain pixel, contrast the monochrome information and the chrominance information of this pixel and each pixel around it, obtain luminance deviation and chromaticity distortion, judge then whether luminance deviation and chromaticity distortion exceed threshold range, if do not exceed threshold range, then the output pixel normal information detects next pixel; When whole pixels all finish after testing, detect next picture to be measured according to actual needs, perhaps detect next LCD panel.If exceed threshold range, output pixel abnormal information then, and unusual luminance deviation in luminance deviation and chromaticity distortion and the database and unusual chromaticity distortion contrast, as if record is arranged, then according in the database accordingly diagnostic message abnormal pixel is carried out diagnostic process; If no record, then abnormal pixel is analyzed, and definite diagnostic message, the abnormal data and the diagnostic message of this abnormal pixel correspondence stored in the database.Each pixel of 2 pairs of pictures to be measured of detection module compares successively, detects, judges.
In technique scheme, the way of contrast of monochrome information and chrominance information can contrast for each pixel around each single pixel and its between the pixel, also can be to compare successively between the pixel of horizontal ordinate or ordinate unanimity, perhaps all pixels in certain zone compare etc., or the combination of these way of contrast.
The present invention is easy to realize to the detection automaticity height of picture quality, the accuracy of detection height, and the efficient height has reduced labour intensity, has guaranteed product quality.
Fig. 2 is a LCD display effect detection method process flow diagram of the present invention, and concrete steps are:
Step 100, gather the light signal of picture to be measured, this light signal is converted to electric signal and sends from display screen;
Step 200, extract the brightness and the chrominance information of pixel according to electric signal, the brightness and the chrominance information that contrast each pixel obtain luminance deviation and chromaticity distortion; When described luminance deviation and/or chromaticity distortion do not exceed threshold range, the output pixel normal information; When described luminance deviation and/or chromaticity distortion exceed threshold range, the output pixel abnormal information.
The present invention is converted into electric signal by the light signal of the picture to be measured that will collect, extract according to this electric signal picture to be measured pixel brightness and chrominance information and handle and obtain luminance deviation and chromaticity distortion, whether exceed the setting threshold scope according to luminance deviation and/or chromaticity distortion and judge whether pixel is normal, thereby reach the purpose that detects picture quality.The present invention is easy to realize to the detection automaticity height of picture quality, the accuracy of detection height, and the efficient height has reduced labour intensity, has guaranteed product quality.
In technique scheme, also comprise after the step 200:
Step 300, the luminance deviation of abnormal pixel and/or the historical data in chromaticity distortion and the database are contrasted,, then carry out diagnostic process according to corresponding diagnostic message in the database if record is arranged; If no record, then execution in step 310;
Step 310, abnormal pixel is analyzed, and definite diagnostic message;
Step 320, the abnormal data and the diagnostic message of abnormal pixel correspondence stored in the database.
Before implementing the present invention, at first set up database.Store the monochrome information and the chrominance information of pixel under each picture to be checked of normal condition in the database, and normal brightness deviation between the pixel and standard colorimetric deviation, and established standards luminance deviation and the standard colorimetric deviation variation range of allowing, i.e. setting threshold scope.In addition, also according to historical experience, unusual luminance deviation and unusual chromaticity distortion in database under the rule of thumb known various abnormal conditions of storage between the unusual monochrome information of pixel and unusual chrominance information and abnormal pixel and the abnormal pixel, between abnormal pixel and the normal pixel, and with every kind of diagnostic message that abnormal conditions are corresponding.
In the present embodiment, export picture signal to be measured, show picture to be measured, gather the light signal of picture to be measured, this light signal is converted to electric signal, and, can obtain the brightness and the chrominance information of each pixel according to this electric signal this electric signal output to display screen.Select a certain pixel, contrast the monochrome information and the chrominance information of this pixel and each pixel around it, obtain luminance deviation and chromaticity distortion.Judge then whether luminance deviation and chromaticity distortion exceed threshold range, if do not exceed threshold range, then the output pixel normal information detects next pixel; When whole pixels all finish after testing, detect next picture to be measured according to actual needs, perhaps detect next LCD panel.If exceed threshold range, output pixel abnormal information then, unusual luminance deviation in luminance deviation and chromaticity distortion and the database and unusual chromaticity distortion are contrasted,, then abnormal pixel is carried out diagnostic process according to corresponding diagnostic message in the database if record is arranged; If no record, then abnormal pixel is analyzed, and definite diagnostic message, the abnormal data and the diagnostic message of this abnormal pixel correspondence stored in the database.Each pixel to picture to be measured compares successively, detects.
In technique scheme, the way of contrast of monochrome information and chrominance information can contrast for each pixel around each single pixel and its between the pixel, also can be to compare successively between the pixel of horizontal ordinate or ordinate unanimity, perhaps all pixels in certain zone compare etc., or the combination of these way of contrast.
The present invention is easy to realize to the detection automaticity height of picture quality, the accuracy of detection height, and the efficient height has reduced labour intensity, has guaranteed product quality.
Fig. 3 is a LCD display effect detection method embodiment process flow diagram of the present invention, as shown in Figure 3, specifically comprises:
Step 510, export picture signal to be measured to display screen;
Step 520, display screen reception also show picture to be measured;
The light signal of step 530, collection picture to be measured is converted into electric signal and transmission with this light signal;
Step 540, extract the brightness and the chrominance information of pixel according to electric signal;
Step 550, each pixel around single pixel and its is contrasted monochrome information and chrominance information successively, obtain luminance deviation and chromaticity distortion;
Step 560, judge whether luminance deviation and chromaticity distortion exceed threshold range, are, then execution in step 570, otherwise execution in step 561;
Step 561, output pixel normal information, execution in step 550;
Step 570, output pixel abnormal information;
Step 580, the abnormal data of abnormal pixel correspondence and the historical data in the database are contrasted;
In step 590, the judgment data storehouse whether respective record being arranged, is execution in step 591 then, otherwise execution in step 600;
Step 591, according to corresponding diagnostic message in the database abnormal pixel is carried out diagnostic process, execution in step 592 disposes;
Step 592, end;
Step 600, these pixel abnormal conditions are carried out diagnostic process;
Step 610, the abnormal data and the diagnostic message of this abnormal pixel correspondence all recorded in the database.
Finished product LCD panel after present embodiment finishes with module technology is an example.Before implementing the present invention, at first set up database.The monochrome information and the chrominance information of pixel under the storage normal condition in the database, and normal brightness difference between the pixel and standard colorimetric difference, and established standards luminance difference and the standard colorimetric difference variation range of allowing, i.e. setting threshold scope.In addition, also according to historical experience, unusual luminance difference and unusual colourity difference in database under the rule of thumb known various abnormal conditions of storage between the unusual monochrome information of pixel and unusual chrominance information and abnormal pixel and the abnormal pixel, between abnormal pixel and the normal pixel, and with every kind of diagnostic message that abnormal conditions are corresponding.
In the present embodiment, export picture to be measured, show picture to be measured, begin to gather the light signal of picture to be measured, this light signal is converted to electric signal, can obtain the brightness and the chrominance information of each pixel of LCD display display screen according to this electric signal to display screen.Select a certain pixel, contrast the monochrome information and the chrominance information of this pixel and each pixel around it, obtain luminance deviation and chromaticity distortion, judge then whether luminance deviation and chromaticity distortion exceed threshold range, if do not exceed threshold range, then the output pixel normal information detects next pixel; When all pixels of picture to be measured all detect when finishing, detect next picture to be measured according to actual needs, perhaps detect next LCD panel.If exceed threshold range, output pixel abnormal information then, and unusual luminance deviation in luminance deviation and chromaticity distortion and the database and unusual chromaticity distortion contrast, as if record is arranged, then according in the database accordingly diagnostic message abnormal pixel is carried out diagnostic process; If no record, then abnormal pixel is analyzed, and definite diagnostic message, the abnormal data and the diagnostic message of this abnormal pixel correspondence stored in the database.Each pixel to picture to be measured compares successively, detects.
In technique scheme, the way of contrast of monochrome information and chrominance information can contrast for each pixel around each single pixel and its between the pixel, also can be to compare successively between the pixel of horizontal ordinate or ordinate unanimity, perhaps all pixels in certain zone compare etc., or the combination of these way of contrast.
Semi-manufacture LCD panel after the present invention also can finish the cell operation carries out the detection of image quality, needs during enforcement to install polaroid additional between LCD display to be checked and acquisition module.
The present invention is easy to realize to the detection automaticity height of picture quality, the accuracy of detection height, and the efficient height has reduced labour intensity, has guaranteed product quality.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of embodiment of the invention technical scheme.