CN104483103A - Method for testing resolution of display screen - Google Patents
Method for testing resolution of display screen Download PDFInfo
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- CN104483103A CN104483103A CN201410806185.5A CN201410806185A CN104483103A CN 104483103 A CN104483103 A CN 104483103A CN 201410806185 A CN201410806185 A CN 201410806185A CN 104483103 A CN104483103 A CN 104483103A
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Abstract
The invention provides a method for testing resolution of a display screen. Test tools comprise a resolution test card and a microscope, and mark points are marked in a plurality of different standard resolution point positions and on long and wide sides of the resolution test card. The method comprises specific steps as follows: the resolution test card is opened based on the actual size, and the resolution of the resolution test card is higher than that of the display screen; the upper left corner of the resolution test card is flush with the upper left corner of the display screen, and the number of pixels between the closest mark point on the resolution test card and the edge of the display screen is calculated one by one by the microscope; and the sum obtained by adding the pixel value of the closest mark point to the pixel value between the mark point and the edge of the display screen is the pixel value of the current resolution of the display screen. According to the method for testing the resolution of the display screen, a plurality of marking areas where different colors are filled and the mark points are marked are arranged, so that the resolution of the display screen of tested equipment is rapidly approached by a tester, the resolution test efficiency is improved, the test accuracy of the resolution of the display screen is guaranteed simultaneously, and the test accuracy reaches the pixel level.
Description
Technical field
The present invention relates to a kind of resolution test method, particularly relate to a kind of method of testing of display resolution.
Background technology
Along with the development of display screen technology, the size of display screen is increasing, and resolution is more and more higher, and display density increases increasingly, and red, green, blue three primary colours dot matrix display technique does not change.The display resolution of some businessmans oneself product of publicity can reach certain concrete numerical value, but whether the resolution of its display screen can reach the concrete numerical value in publicity, whether error meets relevant criterion, needs the resolution to display screen (referring generally to ultimate resolution) to test;
Traditional resolution test method mainly contains two kinds: a kind of lower mainly for resolution, the display screen that display density is larger, and after usually being amplified by microscope or magnifier, the mode of individual element counting obtains the exact value of resolution; The second normally counts the pixel count of unit length by microscope, thus calculates the display point distance of display screen, then measures the display size of display screen, calculates the resolution obtaining display screen.
Although first method is accurate, but when the pixel value of single direction is greater than certain numerical value (as 100), the mode counted one by one is easily made a fault, and significantly increases the workload of tester simultaneously, and this method is not suitable for the development trend in nowadays display screen height Qinghua; Although second method is convenient and swift compared with first method, owing to introducing twice measurement of length, increase measuring error greatly, thus cause result precision not high.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide a kind of fast, the method for testing of display resolution accurately, the resolution of display screen can be obtained in the very short time, be accurate to the method for testing of the display resolution of Pixel-level simultaneously.
For achieving the above object, the invention provides a kind of method of testing of display resolution, comprise the microscope that the resolution chart of the rectangle of picture format and maximum amplification are more than or equal to 100 times, on the long limit of described resolution chart, from left to right there is gauge point in direction at the some position of multiple different standard resolution mark successively, on the broadside of described resolution chart, there is gauge point in direction at the some position of multiple different standard resolution mark successively from top to bottom, and the horizontal pixel value method of testing of tested display screen comprises the steps:
By the described resolution chart importing equipment under test of resolution higher than the current resolution of described display screen, described resolution chart is opened with actual size;
Resolution chart broadside is alignd with the broadside of display screen, described microscopical enlargement factor is adjusted to the pixel seeing described display screen clearly, to count one by one near described display screen near the gauge point in the upper right corner to the pixel count between the described display screen upper right corner with described microscope;
Add that the pixel value between described gauge point to the described display screen upper right corner is the horizontal pixel value of the current resolution of described display screen by near described display screen near the pixel value of the described gauge point in the upper right corner.
Preferably, align with the upper left corner of described display screen in the upper left corner of described resolution chart, and the vertical pixel value method of testing of described display screen comprises the steps:
Gauge point near the described display screen lower left corner is counted one by one to the pixel count between the described display screen lower left corner with described microscope;
The pixel value of the gauge point near the described display screen lower left corner is added the pixel value between described gauge point to the described display screen lower left corner is the vertical pixel value of the current resolution of described display screen.
Preferably, there is gauge point on the long limit of described resolution chart at the some position of multiple different standard resolution mark in direction from right to left successively, the gauge point of the long limit of described resolution chart from left to right direction and direction mark from right to left uses different colours mark, the gauge point that reverse direction subscript is focused on closing uses the third color mark being different from above-mentioned color, and the left and right end points of described resolution chart upper end is the gauge point of rightabout mark;
When from left to right direction being greater than the horizontal range near the gauge point in the described display screen upper right corner and the described display screen upper right corner on direction from right to left near the gauge point in the described display screen upper right corner and the horizontal range in the described display screen upper right corner, the pixel value that the right-hand member end points that the horizontal pixel value of described display screen equals the long limit of described resolution chart marks on from left to right direction deducts on direction from right to left and adds the pixel count between described gauge point to the described display screen upper right corner near the pixel value of the gauge point in the described display screen upper right corner.
Preferably, the broadside of described resolution chart has gauge point at the some position of multiple different standard resolution mark in direction from top to bottom successively, the gauge point of the broadside of described resolution chart direction and direction mark from top to bottom from top to bottom uses different colours mark, the gauge point that reverse direction subscript is focused on closing uses the third color mark being different from above-mentioned color, and the upper and lower end points of described resolution chart left end is the gauge point of rightabout mark;
When direction is from top to bottom greater than the vertical range from bottom to top near the gauge point in the described display screen lower left corner and the described display screen lower left corner near the gauge point in the described display screen lower left corner and the vertical range in the described display screen lower left corner, the pixel value that the lower end end points that the vertical pixel value of described display screen equals the broadside of described resolution chart marks on direction from top to bottom deducts and adds the pixel count between described gauge point to the described display screen lower left corner near the pixel value of the gauge point in the described display screen lower left corner from bottom to top.
Preferably, described resolution chart is provided with multiple tab area, described tab area is that the end points place, the upper left corner of resolution chart extends to form multiple rectangular area to the long limit of described resolution chart and broadside, the length of side of multiple described rectangular area on described long limit is arranged in order from small to large, the length of side of multiple described rectangular areas on described broadside is arranged in order from small to large, multiple described rectangular area has a common vertex, and described common vertex is the top left corner apex of described resolution chart;
Described first tab area is the first rectangular area;
Described second tab area is region remaining after the second rectangular area removes the first rectangular area;
Described N tab area is region remaining after N rectangular area removes N-1 rectangular area;
Tab area described in tab area described in odd number and even number adopts different colours to fill.
Preferably, be 100 to 500 times by described microscopical enlargement factor of observing when counting pixel.
Preferably, described gauge point is the color lump of 3*3 pixel, and the upper left corner of described resolution chart does not mark, and the upper right corner of described resolution chart is the color lump of 2*3 pixel.
Preferably, the pixel set of described standard resolution is
{ 128,200,240,256,320,480,512,576,600,640,720,768,800,816,852,864,900,960,1024,1050,1080,1152,1200,1280,1360,1366,1400,1440,1600,1680,1920,1980,2048,2160,2560,3840}, described resolution chart comprises pixels some in described pixel set.
The method of testing of a kind of display resolution provided by the invention, arrange multiple tab area to interlock and fill the resolution that different colours and annotated mark point be conducive to tester's fast approaching equipment under test display screen, carry high-resolution testing efficiency, ensure the test accuracy of display resolution simultaneously, be accurate to Pixel-level.
Accompanying drawing explanation
Fig. 1 is that the resolution chart of the detection method of display resolution of the present invention uses schematic diagram.
In figure: the gauge point in 1-direction from left to right, 2-from right toward the gauge point of left direction, the horizontal boundary point of 3-display screen, the gauge point in 4-direction from top to bottom, the gauge point in 5-direction from the bottom up, the vertical frontier point of 6-display screen, 7-the 3rd region, 8-the 4th region.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further:
Please refer to Fig. 1, figure is that the resolution chart of the detection method of display resolution of the present invention uses schematic diagram.
Suppose that present You Ge producer illustrates the display screen providing a kind of 480*480 pixel, immediate 512*512 pixel resolution test card is with it selected according to measuring resolution, the gauge point 1 in direction from left to right, this resolution chart top comprises { 0 successively, 16, 32, 64, 128, 256, 512}, { 0 is comprised successively from the right gauge point 2 toward left direction, 16, 32, 64, 128, 256, 512}, the gauge point 4 in this resolution chart left end direction from top to bottom comprises { 0 successively, 16, 32, 64, 128, 256, 512}, the gauge point 5 in direction comprises { 0 successively from the bottom up, 16, 32, 64, 128, 256, 512}.
Concrete display resolution testing procedure:
Horizontal resolution is tested:
A) by the resolution chart of 512*512 with picture format stored in equipment under test, and test card to be opened with actual size;
B) is alignd with the display screen upper left corner in the test card upper left corner, the pixel count (nearest with gauge point 256, gauge point 512 is positioned at outside screen) counting one by one from the display screen upper right corner to the nearest gauge point of test card coboundary.Because the pixel count between the horizontal boundary point 3 of display screen and gauge point 256 is too many, gets up with microscopic examination and easily occur deviation, perform c operation;
C) because resolution chart is from right toward close together between the gauge point 2 and the horizontal boundary point 3 of display screen of left direction, from the right side toward nearest between the horizontal boundary point 3 of 64 and display screen of the gauge point 2 of left direction;
D) read with microscope between the right horizontal boundary point 3 toward 64 and display screen in the gauge point 2 of left direction between 16, pixel position, therefore the horizontal resolution=512-64+16=464 of this display screen reality.
Vertical resolution is tested:
A) by the resolution chart of 512*512 with picture format stored in equipment under test, and test card to be opened with actual size;
B) is alignd with the display screen upper left corner in the test card upper left corner, the pixel count (nearest with gauge point 256, gauge point 512 is positioned at outside screen) counting one by one from the display screen lower left corner to the nearest gauge point of test card left hand edge.Because the pixel count between the vertical frontier point 6 of display screen and gauge point 256 is too many, gets up with microscopic examination and easily occur deviation, perform c operation;
C) due to resolution chart close together between the gauge point 5 in direction and the horizontal boundary point 5 of display screen from the bottom up, nearest between the horizontal boundary point 6 of 64 and display screen of the gauge point 5 in direction from the bottom up;
D) read with microscope between the right horizontal boundary point 3 toward 64 and display screen in the gauge point 2 of left direction between 12, pixel position, therefore the horizontal resolution=512-64+12=460 of this display screen reality.
At resolution chart, odd number region and even number region different colours are filled, resolution test personnel can be contributed to and find the gauge point nearest with tested display screen more fast and accurately, read the pixel value of described nearest gauge point, suppose that the horizontal boundary point 3 of display screen is between the 3rd region and the 4th region, thus can determine that the horizontal resolution of this display screen is between 32 to 64, at this moment also can use the horizontal pixel value that less resolution chart (resolution chart as 64*64) detects this display screen instead.
Certainly, the gauge point of resolution chart can mark different gauge points on horizontal or vertical direction, and the gauge point 1 as direction from left to right, this resolution chart top comprises { 0 successively, 16,32,64,128,256,512}, and comprise { 0,32,64 successively from the right gauge point 2 toward left direction, 128,256,280,320,512}; By in the horizontal direction from left to right direction gauge point 1 and mark from the right gauge point 2 toward left direction the accurate detection that different gauge points can realize this display screen horizontal pixel point: when difficulty is got up in direction from left to right for horizontal boundary point 3 test of display screen time (horizontal resolution of hypothetical target display screen is about 330), can from the right horizontal boundary point 3 that shields toward reading displayed left direction and nearest gauge point (320) for benchmark determines the horizontal pixel value of this display screen.The similar above-mentioned horizontal pixel value determination way of vertical pixel value determination way of this display screen.
Above-described embodiment is only for the invention example is clearly described, and the restriction not to the invention embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All within the spirit and principles in the present invention any apparent change of extending out or variation be still among the protection domain of the invention claim.
Claims (8)
1. the method for testing of a display resolution, it is characterized in that: comprise the microscope that the resolution chart of the rectangle of picture format and maximum amplification are more than or equal to 100 times, on the long limit of described resolution chart, from left to right there is gauge point in direction at the some position of multiple different standard resolution mark successively, on the broadside of described resolution chart, there is gauge point in direction at the some position of multiple different standard resolution mark successively from top to bottom, and the horizontal pixel value method of testing of tested display screen comprises the steps:
By the described resolution chart importing equipment under test of resolution higher than the current resolution of described display screen, described resolution chart is opened with actual size;
Resolution chart broadside is alignd with the broadside of display screen, described microscopical enlargement factor is adjusted to the pixel seeing described display screen clearly, to count one by one near described display screen near the gauge point in the upper right corner to the pixel count between the described display screen upper right corner with described microscope;
Add that the pixel value between described gauge point to the described display screen upper right corner is the horizontal pixel value of the current resolution of described display screen by near described display screen near the pixel value of the described gauge point in the upper right corner.
2. the method for testing of display resolution according to claim 1, is characterized in that: align with the upper left corner of described display screen in the upper left corner of described resolution chart, and the vertical pixel value method of testing of described display screen comprises the steps:
Gauge point near the described display screen lower left corner is counted one by one to the pixel count between the described display screen lower left corner with described microscope;
The pixel value of the gauge point near the described display screen lower left corner is added the pixel value between described gauge point to the described display screen lower left corner is the vertical pixel value of the current resolution of described display screen.
3. the method for testing of display resolution according to claim 1, it is characterized in that: there is gauge point on the long limit of described resolution chart at the some position of multiple different standard resolution mark in direction from right to left successively, the gauge point of the long limit of described resolution chart from left to right direction and direction mark from right to left uses different colours mark, the gauge point that reverse direction subscript is focused on closing uses the third color mark being different from above-mentioned color, and the left and right end points of described resolution chart upper end is the gauge point of rightabout mark;
When from left to right direction being greater than the horizontal range near the gauge point in the described display screen upper right corner and the described display screen upper right corner on direction from right to left near the gauge point in the described display screen upper right corner and the horizontal range in the described display screen upper right corner, the pixel value that the right-hand member end points that the horizontal pixel value of described display screen equals the long limit of described resolution chart marks on from left to right direction deducts on direction from right to left and adds the pixel count between described gauge point to the described display screen upper right corner near the pixel value of the gauge point in the described display screen upper right corner.
4. the method for testing of display resolution according to claim 2, it is characterized in that: the broadside of described resolution chart has gauge point at the some position of multiple different standard resolution mark in direction from top to bottom successively, the gauge point of the broadside of described resolution chart direction and direction mark from top to bottom from top to bottom uses different colours mark, the gauge point that reverse direction subscript is focused on closing uses the third color mark being different from above-mentioned color, and the upper and lower end points of described resolution chart left end is the gauge point of rightabout mark;
When direction is from top to bottom greater than the vertical range from bottom to top near the gauge point in the described display screen lower left corner and the described display screen lower left corner near the gauge point in the described display screen lower left corner and the vertical range in the described display screen lower left corner, the pixel value that the lower end end points that the vertical pixel value of described display screen equals the broadside of described resolution chart marks on direction from top to bottom deducts and adds the pixel count between described gauge point to the described display screen lower left corner near the pixel value of the gauge point in the described display screen lower left corner from bottom to top.
5. the method for testing of the display resolution according to claim 3 or 4, it is characterized in that: described resolution chart is provided with multiple tab area, described tab area is that the end points place, the upper left corner of resolution chart extends to form multiple rectangular area to the long limit of described resolution chart and broadside, the length of side of multiple described rectangular area on described long limit is arranged in order from small to large, the length of side of multiple described rectangular areas on described broadside is arranged in order from small to large, multiple described rectangular area has a common vertex, described common vertex is the top left corner apex of described resolution chart,
Described first tab area is the first rectangular area;
Described second tab area is region remaining after the second rectangular area removes the first rectangular area;
Described N tab area is region remaining after N rectangular area removes N-1 rectangular area;
Tab area described in tab area described in odd number and even number adopts different colours to fill.
6. the method for testing of display resolution according to claim 5, is characterized in that: be 100 to 500 times by described microscopical enlargement factor of observing when counting pixel.
7. according to the method for testing of the arbitrary described display resolution of claim 1-6, it is characterized in that: described gauge point is the color lump of 3*3 pixel, the upper left corner of described resolution chart does not mark, and the upper right corner of described resolution chart is the color lump of 2*3 pixel.
8., according to the method for testing of the arbitrary described display resolution of claim 1-6, it is characterized in that: the pixel set of described standard resolution is { 128,200,240,256,320,480,512,576,600,640,720,768,800,816,852,864,900,960,1024,1050,1080,1152,1200,1280,1360,1366,1400,1440,1600,1680,1920,1980,2048,2160,2560,3840}, described resolution chart comprises pixels some in described pixel set.
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