TW519819B - Chart detector for image testing - Google Patents

Abstract

There is provided a chart detector for image testing. One feature is to use a fixing seat to take the chart away from the focus plane of the scanner and select a first pattern that will influence the testing result by the variance of the height (distance focus plane) from the patterns of the chart, so as to make the first pattern close to the focus plane of the scanner and the other patterns remain on the surface of the chart, thereby avoiding a contact with the focus plane. A second feature is to arrange a lens between the chart and the focus plane, such that, under a condition that the chart does not contact with the focus plane, the lens magnifies the patterns of the chart and projects the same on the focus plane. Furthermore, a transparent plate is arranged between the lens and focus plane. Finally, a fixing seat is used to fix the corresponding positions of the chart, lens and transparent plate, wherein the fixing seat can provide a sliding slot structure for removing and replacing the transparent plate, thereby maintaining a high transparency.

Description

519819 7437twf.d〇c / 006 A7 B7 V. Description of the invention (f) The present invention relates to an image test chart inspection tool, which is suitable for being placed on a focusing plane of an image scanning device for image testing. Of the pattern. -------------- Install --- (Please read the notes on the back before filling out this page) With the improvement of computer performance, and the development of Internet and multimedia technology, The input work of a document or picture needs to use a scanner to capture the image on the document or picture and convert it into an electronic image file. As the manufacturing technology of scanners has gradually matured, scanners have gradually become standard equipment for general personal computers. Scanners can be divided into flat-bed and paper-fed based on the way they are fed. Due to the stable image scanning quality of flat-bed scanners, flat-bed scanners have gradually become mainstream in the market. Flatbed scanners usually have a glass surface (focus plane), which is used to place the document or picture to be scanned, and the scanner's optical system (chassis) is used to scan the surface of the document or picture step by step to generate digital images. Signal for the functions of displaying, editing, saving and outputting images on a computer. Line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Any electronic product must be subjected to quality control tests to ensure its workability Θ purpose is in compliance with the standard. The above-mentioned platform scanner is no exception. Since the function of the scanner is mainly to capture image patterns, in addition to testing whether the electronic components are electrically connected and checking whether the external structure is normal or not, the most important thing is to test the resolution and chroma of the scanner. 3. Whether the brightness and contrast meet the requirements of the specification standards. In simple terms, it is to test whether the image graphics scanned by the scanner are the same as the image graphics of the actual document or picture. It is known that a document is simulated with a chart for image testing. 3 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 519819 7437twf.doc / 006 A7 _ B7 V. Description of the invention ( Or), and place it on the focusing plane of a flatbed scanner, and after scanning by the scanner's optical system, compare the image pattern captured by the scanner with the image pattern on the test chart In order to find out whether the scanning capability of this scanner has reached the minimum standard. Please refer to Figure 1, which is a schematic diagram of a conventional image test chart. The image test chart 10 has a pattern 20 on its surface, which includes different color blocks and lines according to different test needs. To test the chroma, brightness, light and dark contrast, resolution, etc. of the image graphics. This type of image test chart 10 can also test equipment with image input functions such as photocopiers and fax machines. Please also refer to Figure 1. Since the pattern 20 is printed on the surface of the test chart 10, the test chart 10 is often used between the pattern 20 and the focus plane of the scanner after repeated use. As a result of the friction, it is easy to cause scratches on the pattern 20, thus losing the accuracy of its color and lines. Because the cost of making the chart 10 for image testing is higher, the test chart 1 must be replaced frequently if the pattern 20 is damaged. In this case, the detection cost of the scanner will be greatly increased. A conventional method for preventing scratches is to add a protective cover on the surface of the test chart 10 (such as the component number 30 in FIG. 2). However, after long-term test use, the surface of the protective cover 30 will still be caused. Scratching affects its light transmittance, and indirectly affects the accuracy of the colors and lines of the test chart 10. The purpose of the present invention is to prevent the chart used for image testing, and the platform-type scanner will not be scratched after frequent testing and use of the surface pattern, so as to reduce the frequency of replacing the chart and further reduce the detection of the scanner. cost. In order to achieve the above and other objectives, the present invention proposes _ 4 This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the note on the back? Matters before filling this page) ·

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 519819 7437twf.doc / 006 A7 B7 V. Description of the Invention (彡) A kind of chart inspection tool for image testing, suitable for placing on an image scan A focusing plane on one of the devices is used to provide a pattern for image testing, including: a fixing base having a cross section of a "door" shape. The fixing base has a groove recessed on the bottom surface of the fixing base. The fixed base is placed on the focusing plane of the image scanning device with its bottom surface; and a chart is arranged on the groove bottom of the groove of the fixed base. One of the faces of the chart facing the focusing plane has a first pattern and a second pattern. The top surface of the first pattern is close to the focusing plane, and the top surface of the second pattern is far from the focusing plane. The first pattern can be made separately from the chart, and the first pattern can be fixed on the chart by attaching it. In addition, the second pattern is formed on the chart by printing. In order to achieve the above-mentioned object and other objects, the present invention provides a chart tester for image testing, which is suitable for being placed on a focusing plane of an image scanning device to provide a pattern for image testing, including: a fixed base, The cross section is approximately a "door" shape. The fixing base has a groove recessed on the bottom surface of the fixing base. In addition, the fixing base is placed on the focusing plane of the image scanning device with its bottom surface; a chart is arranged horizontally. In the groove of the fixed seat, the diagram is far from the focusing plane, and one of the faces of the diagram faces the focusing plane with a pattern; a lens is arranged horizontally in the groove, wherein the lens is located on the diagram and the focusing plane. Between; and a light-transmitting plate, which is horizontally arranged in the groove and located between the lens and the focusing plane. A distance is maintained between the graph and the lens, and a distance is maintained between the lens and the transparent plate. In addition, the material of the transparent plate is a material with high light transmittance and abrasion resistance or a glass material. The method of horizontally arranging the light-transmitting plate in the groove includes the direction parallel to the bottom surface of the fixed seat, and the fixed seat 5 (please read the note on the back? Matters before filling this page)

This paper size applies to China National Standard (CNS) A4 (210 X 297 mm). Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 519819 7437twf.doc / 006 A7 ---- B7 V. Concavity of the Invention The two opposite groove walls of the groove respectively form a sliding groove, and the two sides of the light transmitting plate are correspondingly embedded in the two sliding grooves, and the light transmitting plate can be moved and taken out through the two sliding grooves. In order to make the above-mentioned objects, features, and advantages of the present invention comprehensible, a first embodiment and a second embodiment are specifically given below, and the accompanying drawings are described in detail as follows: Brief description of the drawings The figure is a schematic diagram of a conventional image test chart; FIG. 2 is a cross-sectional schematic diagram of a conventional image test chart and a protective cover; FIG. 3 is a chart inspection chart of the first to the embodiments of the present invention. A schematic sectional view of a tool placed on a focusing plane of a scanner. FIG. 4 is a schematic structural view of a second embodiment of the present invention. FIG. 5 is a second example of the invention—a cross-sectional schematic diagram of an image test chart inspection tool, which is placed on a focusing plane of a scanner; and FIG. 1 is an image test for the third embodiment of the present invention. A perspective view of the chart fixture. 10, 110, 210 ·· Diagram 30 = Protective cover 100, 200: Fixing base 102, 202 · · Bottom surface 104, 204: Groove (Please read the precautions on the back before filling this page)

1 This paper size applies to China National Standard (CNS) A4 specifications (210x2 ^^ · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 519819 7437twf.d〇c / 006 A7 B7 V. Description of the invention (s) 120, 212: Pattern 122: The first pattern 124: The second pattern 220. The lens 230: The light transmitting plate 300: The glass plate 302: The focusing plane. For the first embodiment, please refer to FIG. 3, which is an image test of the first embodiment of the present invention. A cross-sectional view of a graph inspection tool placed on the focus plane of a scanner. As the pattern 120 on the surface of the graph 110 can be divided into two types, of which the first pattern 122 will vary according to height (302 from the focus plane). It affects the test results, such as the pattern used to test the contrast function (MTF) of the image. In addition, the second pattern 124 does not affect the test results due to the difference in height (from the focus plane 302). For example, it is used to test the black and white correction. Therefore, in order to prevent the second pattern 124 from being scratched, the second pattern 124 can be designed to be far away from the focusing plane 302 of the glass plate 300 to avoid scratching by contact with the focusing plane 302, which can reduce the detection of the scanner. Cost, and the first pattern 122 can be separately made on the table 110 and brought close to the focusing plane 302. Since the first pattern 122 is still in contact with the focusing plane 302, it can be periodically replaced to maintain a better state. Please also Referring to FIG. 3, the image tester for image testing according to the first embodiment of the present invention includes a fixed base 100 and a chart 110. Among them, the cross section of the fixed base 100 is approximately “Π”, and the fixed base 100 has a Groove 7 This paper is sized for Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back? Matters before filling out this page) Packing-line 519819 A7 4 3 7 twf. Doc / 00 6 Fifth Ministry of Economic Affairs, Intellectual Property Bureau employee consumer cooperative printed invention description (Hand) (Please read the precautions on the back before filling out this page) 104, which is recessed on the bottom surface of the fixed seat loo 102, of which the fixed seat 10 is The bottom surface 102 is placed on the focusing plane 302. In addition, the chart 120 is horizontally arranged in the groove 104 of the fixing base 100, and the chart 120 has a first pattern 122 and a second pattern on one surface facing the focusing plane 302. Pattern 124. Since the first The test result of the pattern 122 is affected by the height (from the focus plane 302), but the second pattern 124 is not affected. Therefore, in the second embodiment, in order to keep the first pattern 122 close to the focus plane 302, Increase the height of the first pattern 122 so that the top surface of the first pattern 122 is close to the focus plane 302 to avoid affecting the test results. Because the test results of the second pattern 124 are not affected by the height (from the focus plane 302) Therefore, the second pattern 124 can be made on the surface of the chart 110 without being close to the focusing plane 302 and away from the focusing plane 302. As mentioned above, the surface 110 of the chart 110 will generate a pattern 120 of two heights, including a first pattern 122 and a second pattern 124. In design and production, the second pattern 124 may be printed on the surface of the chart 110 first, and a specific area is left for the first pattern 122 to be fixed thereon. For example, a bump is arranged corresponding to the specific position described above, and the bump is A first pattern 122 is printed on the top surface, so that the top surface of the first pattern 122 is close to the focusing plane 302. In the first embodiment of the present invention, the chart 110 is moved away from the focusing plane 302 by the fixing base 100, and the first pattern 122 that is affected by the height (distance from the focusing plane 302) from the pattern 120 is selected to affect the test result. Make it close to the focus plane 302 of the scanner, and other second patterns 124 remain on the surface of the chart 110 to avoid contact with the focus plane 302. The size of the paper applies the Chinese National Standard (CNS) A4 specification (2). X 297 mm) 519819 7437twf.doc / 006 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of Invention (Q). Among them, the first pattern 122 can be made separately and attached to a specific area of the graph 110. The first pattern 122 can be periodically replaced on the setting 50 to maintain the test quality of the best pattern 120 for image testing. And the second pattern 124 does not come into contact with the focusing plane 302 and is scratched, so it does not need to be replaced frequently, thereby reducing the detection cost of the scanner. Second Embodiment Please refer to FIG. 4, which shows the structure of a second embodiment of the present invention. In order to avoid the pattern 212 of the chart 210 directly contacting the focusing plane 302 of the glass plate 300, so that the pattern 212 remains intact under frequent test use, without being abraded and scratched by the glass plate 300, the chart 210 and the focus A distance can be maintained between the planes 302. However, as mentioned in the first embodiment, when the pattern 212 of the chart 210 is far from the focusing plane 302, part of the pattern 212 will affect the test result due to the difference in height (from the focusing plane 302). Therefore, the present invention The second embodiment uses the optical principle to configure a lens 220 between the chart 210 and the focusing plane 302, so that the patterns 212 on the chart 210 are enlarged and imaged on the focusing plane 302, in order to solve the problem of increasing the chart 210 and the focusing plane 302. After the distance between the two, and affect the test results. In addition, in order to prevent the lens 220 from directly contacting the focusing plane 302, a light transmitting plate 230 is further disposed between the lens 220 and the focusing plane 302 to prevent the lower surface of the lens 220 from contacting the focusing plane 302 or contacting the outside world. Causes abrasion and scratches on the surface of the lens 22o. Since the light-transmitting plate 230 is in contact with the focusing plane 302 and the outside, it is extremely susceptible to abrasion and scratches. Therefore, the material of the light-transmitting plate 23 may be a material having high light transmittance and abrasion resistance, such as glass material. (Please read the precautions on the back before filling in this page) Installation. --Line · 519819 7437twf.d〇c / 〇〇6 A7 ____ B7 V. Description of the invention (") Please refer to Figure 5 which is the A schematic cross-sectional view of the image test chart inspection tool of the second embodiment placed on a focusing plane of a * scanner. The second embodiment of the present invention is a rabbit watch inspection tool for image testing, which includes a fixing base 200, a chart 210, a lens 220, and a light transmitting plate 230. The cross-sectional shape of the fixing base 200 is approximately a "door" shape, and has a groove 204 recessed in the bottom surface 202 of the fixing base 200. The two opposite groove walls of the groove 204 are parallel to the focusing plane 302. On the top, a first chute 206, a second chute 207, and a second chute 208 are formed correspondingly, wherein the chart 210 is correspondingly embedded in the pair of the first chute 206 with its two side ends, and the lens 220 Similarly, the pair of second sliding grooves 207 are embedded in the two side ends, and the light-transmitting plate 230 is also embedded in the pair of third grooves 208 respectively. Please also refer to FIG. 6, which is a perspective view of the image test chart inspection tool according to the second embodiment of the present invention. Since the groove wall of the groove 204 of the fixing base 200 has a chute positioning structure, including pairs The first chute 206, the second chute 207, and the third chute 208 respectively enable the graph 210, the lens 220, and the transparent plate 230 to move linearly in the direction of the double arrow 240. Therefore, the graph 210, the lens 220 and the light transmitting plate 230 can be withdrawn and replaced at will. In order to avoid contact friction between the chart 210 and the lens 220 while replacing, a distance can be maintained between the chart 210 and the lens 220. In addition, contact friction between the lens 220 and the light-transmitting plate 230 is also avoided, and a distance can be maintained between the lens 220 and the light-transmitting plate 230. Since the chart 210 and the lens 220 do not need to be replaced frequently, the chart 210 and the lens 220 can be horizontally fixed at the corresponding positions of the groove 204, and the light transmitting plate 230 is in accordance with the Chinese National Standard (CNS) A4 specification (210 X 297 mm)

Printed by Qi Zouzhicai 4 Bureau Consumer Cooperatives I · (Please read the note on the back? Matters before filling out this page)

519819 You Qilang Wisdom Wealth Bureau employee consumer cooperation Du printed 7437twf.d〇c / 〇〇6 A7 V. Description of the invention (9) The wear with the outside is large, so that the transparent plate 230 can be selectively extracted Replace to maintain its good light transmittance. In the second embodiment of the present invention, a lens 220 is arranged between the chart 210 and the focusing plane 302, so that the chart 210 enlarges and images the pattern 212 of the chart 210 on the focusing plane 302 without contacting the focusing plane 302. Protect the lens 220, and arrange a light transmitting plate 230 'between the lens 220 and the focusing plane 302 and design a * fixing base 200' to fix the corresponding positions between the chart 210, the lens 220, and the light transmitting plate 230, where The fixing base 200 can provide a chute structure, so that the light-transmitting plate 230 can be removed and replaced to maintain its high light transmittance. However, the replacement method of the light-transmitting plate 230 is not limited to being taken out and replaced by the chute structure of the fixing base 200, and may be other different replacement methods. In summary, the chart test tool for image testing of the present invention has the following advantages: (1) The chart test tool for image testing according to the first embodiment of the present invention is based on whether the pattern is subject to different heights (from the focus plane). While affecting the test results, the patterns are divided into two categories. The affected patterns are independently produced, attached to a specific position on the chart and replaced regularly, and the distance between the unaffected pattern and the focus plane is increased. It is large so that it is not in direct contact with the focusing plane to reduce the abrasion and scratching of such patterns, thus saving the detection cost of the scanner. (2) A chart inspection tool for image testing according to the second embodiment of the present invention, which is provided with a lens and a light transmitting plate between the chart and the focusing plane, wherein the lens is used to enlarge and image the pattern of the chart on the focusing plane , And the paper size of the light-transmitting board applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page)

519819

7437twf. Doc / 006 J \ J V. Description of the Invention (丨 〇) Avoids contact between the surface of the lens and the focusing plane and the outside world. Therefore, the pattern of the chart can be prevented from directly contacting the focusing plane, thereby reducing the pattern's wear and scratches. , Thereby saving the cost of the scanner inspection. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention. The scope of protection of the invention shall be determined by the scope of the attached patent application. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (Please read the precautions on the back before filling this page)

This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

Claims (1)

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 519819 A8 B8 7437twf.doc / 006 C8 D8 VI. Application for Patent Scope 1. A chart inspection tool for image testing, suitable for placing on a focusing plane of an image scanning device. To provide a pattern for image testing, it includes: a fixing base with a cross section of a "door" shape, the fixing base having a groove recessed in the bottom surface of the fixing base, wherein the fixing base is formed by the The bottom surface is placed on the focusing plane of the image scanning device; and a chart is arranged at the bottom of the groove of the groove. One of the charts facing the focusing plane has a first pattern and a second pattern, wherein the first pattern The top surface of the pattern is close to the focusing plane, and the top surface of the second pattern is far from the focusing plane. 2. The chart tester for image testing according to item 1 of the scope of patent application, wherein the first pattern is fixed on the surface of the chart by means of affixing. 3. The chart tester for image testing according to item 1 of the scope of patent application, wherein the second pattern is printed on the surface of the chart. 4. A chart inspection tool for image testing, which is suitable for being placed on a focusing plane of an image scanning device to provide a pattern for image testing, including: a fixed base whose cross section is approximately a "door" shape, the fixed The base has a groove, which is recessed on the bottom surface of the fixing base. In addition, the fixing base is placed on the focusing plane of the image scanning device with the bottom surface; a chart is arranged horizontally in the groove. In the diagram, the diagram is far away from the focus plane, and the face of the diagram faces a mask of the focus plane. 13 The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back first) (Fill in this page again) 519819 Six A8 B8 C8 D8 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 7437twf.d〇c / 0〇6 The patent application has a pattern; a lens is horizontally arranged in the groove, where the lens is located in the Between the chart and the focusing plane; and a light-transmitting plate, which is horizontally arranged in the groove and located between the lens and the focusing plane. 5. The chart tester for image testing according to item 4 of the scope of patent application, wherein a distance is maintained between the chart and the lens. 6. The chart tester for image testing according to item 4 of the scope of patent application, wherein a distance is maintained between the lens and the light transmitting plate. 7. The graphic inspection tool for image testing as described in item 4 of the scope of patent application, wherein the material of the light transmitting plate is a material with high light transmittance and abrasion resistance. 8. The graphic tester for image testing as described in item 4 of the scope of patent application, wherein the material of the transparent plate is a glass material. 9. The graphic inspection tool for image testing as described in item 4 of the scope of patent application, wherein the way in which the transparent plate is horizontally arranged in the groove includes a direction parallel to the bottom surface through the groove The opposite two groove walls respectively form a slide groove, and the two side ends of the light-transmitting plate are correspondingly embedded in the slide grooves, wherein the light-transmitting plate can be removed and replaced by the slide grooves. . 10. —A chart inspection tool for image testing, which is suitable for placing on a focusing plane of an image scanning device to provide a pattern for image testing, including: a fixed base whose cross section is approximately a "door" shape, the The holder has a groove, which is recessed on the bottom surface of one of the holders, and the groove is 14 (please read the precautions on the back before filling this page) The paper size applies to the Chinese National Standard (CNS) A4 size (210 X 297 mm) c / ο ο 6 f sunny patent range A8 Β8 C8 D8 桧, the first and the direction parallel to the bottom surface, respectively corresponding to the formation of a first slide, slide and third slide, where the first slide is The second chute away from the bottom _ 彳 2 is close to the bottom surface, and the second chute is located between the matching Cao and the third chute. In addition, the fixing base is based on the bottom surface image scanning device. On the focusing plane; chute ~ 181 table, the two side ends of the chart are correspondingly embedded in the first 竽 a, wherein the chart can be moved out by the first 搰 grooves, and the β chart is The surface facing the focusing plane has a pattern; a lens, two side ends of the lens are respectively embedded in the second sliding grooves, wherein the lens can be moved and taken out through the second sliding grooves; and a light transmitting Plate, the two side ends of the light-transmitting plate are correspondingly embedded in the third sliding grooves, respectively, wherein the light-transmitting plate can be moved and taken out through the third sliding grooves. 11. The chart test tool for image testing according to item 10 of the scope of patent application, wherein a distance is maintained between the chart and the lens. 12. The graphic test fixture for image testing as described in item 10 of the scope of patent application, wherein a distance is maintained between the lens and the transparent plate. 13. The graphic test fixture for image testing according to item 10 of the scope of patent application, wherein the material of the light transmitting plate is a material with high light transmittance and abrasion resistance. 14. The graphic test fixture for image testing according to item 10 of the scope of the patent application, wherein the material of the transparent plate is a glass material. 15 (Please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is sized for China National Standard (CNS) A4 (210 X 297 public love)