TW202127379A - Image processing method for light emitting device - Google Patents

Abstract

An image processing method includes the steps of lighting up at least a part of light emitting units of a light emitting device; capturing a plurality of detection images corresponding to a plurality of sections of the light emitting device respectively, wherein each section includes a plurality of lighted-up light emitting units, each detection image includes a plurality of light spots respectively corresponding to the light emitting units of the associated section, and every two adjacent sections have an overlap area including at least one lighted-up light emitting unit; and stitching the detection images of the adjacent sections together by taking the light spots corresponding to at least one lighted-up light emitting unit of the overlap area as alignment reference spots, so that the light emitting statuses of all the light emitting units are presented by a single image.

Description

Luminous material image processing method

The present invention is related to the detection technology of luminescent materials, and particularly relates to an image processing method of luminescent materials.

Conventional light-emitting elements such as micro light-emitting diode (micro LED) array chips, vertical-cavity surface-emitting laser array (VCSEL Array) chips, etc. The light is emitted by a lot of light-emitting units (such as the light outlet of a VCSEL Array chip or each micro LED) at the same time. The light-emitting units may be irregularly arranged and their luminous intensity may not be the same, so that the light-emitting element It does not necessarily emit light uniformly. Therefore, the detection of the light-emitting element usually includes the detection of the luminescence distribution, that is, the detection of whether the luminescence distribution reaches an acceptable degree of uniformity.

The conventional luminescence distribution detection uses a camera to capture an image when the material to be tested containing one or more of the aforementioned light-emitting elements emits light, so as to capture the images of the light-emitting units that are invisible to the naked eye, that is, the detection image There will be light spots corresponding to the light-emitting units, and the light spots will have different light and dark levels according to the luminous intensity of the corresponding light-emitting units. That is, the detection image will show bright and dark light spots. , It can even display the brightness value of each light spot, and the user can judge the luminous distribution of the material to be tested by viewing the detection image.

However, nowadays, the area of the material to be tested is getting larger and larger, and its size may exceed the field of view (FOV) of the general image capture device, or the image capture lens must be quite close to the material to be tested in order to capture the material to be tested. The tiny light-emitting unit of the test object, so that the range that the image capturing device can capture can only cover a certain part of the material to be tested. In this way, although the material to be tested can still be divided into multiple areas for successive inspections, this is the case. That is, it is impossible for the user to observe the luminescence of all the light-emitting units on the same material to be tested at the same time, which is not conducive to judging the luminous distribution of the material to be tested.

In view of the above-mentioned shortcomings, the main purpose of the present invention is to provide an image processing method for luminescent materials, which can present the light-emitting conditions of all light-emitting units on the same luminescent material as a single image.

In order to achieve the above object, the luminescent material image processing method provided by the present invention uses an image capturing device to capture images of a plurality of light emitting units of a luminescent material, and a field of view of the image capturing device is smaller than the luminescence of the luminescent material The distribution range of the unit; the steps of the image processing method of the light-emitting unit of the luminescent material include: Light up at least part of the light-emitting unit of the light-emitting material; The image capturing device is used to capture images of a plurality of blocks of the light-emitting material to obtain a plurality of detection images corresponding to the blocks, wherein each block contains a plurality of light-emitting units that are lit, and each The detection image includes a plurality of light spots, and the light spots are respectively corresponding to the light-emitting unit of the block corresponding to the detection image. Every two adjacent blocks has an overlapping area, and the overlapping area includes at least one lighted up area. Light-emitting unit; and Taking at least one light spot corresponding to the illuminated light-emitting unit in the overlapping area as an alignment reference point, and splicing the detected images of the adjacent blocks into a whole.

In an embodiment of the present invention, after lighting at least part of the light-emitting unit of the light-emitting material, the field of view of the image capturing device is first made to cover a first area of the light-emitting material (including a plurality of light-emitting Unit) to capture the first block to obtain a first detection image (including a plurality of first light points), and then make the field of view of the image capturing device cover a second block (including a plurality of light-emitting materials) Lit up the light-emitting unit) to capture the second area to obtain a second detection image (including a plurality of second light spots), and the first area and the second area have an overlapping area (including at least one covered area) Illuminated light-emitting unit), using at least one light spot corresponding to the same light-emitting unit in the first and second detection images as the alignment reference point, and the first detection image and the second detection image Mutual splicing, so that the first light spot and the second light spot corresponding to each of the light-emitting units in the overlapping area overlap each other. According to the distribution area of the light-emitting unit of the light-emitting material, the third detection image and the fourth area (and the third area) of the third block (with the second block) of the light-emitting material Block a fourth detection image with an overlapping area) and so on, and then stitch the third detection image and the second detection image, the fourth detection image and the third detection image in the aforementioned manner, and so on.

Thereby, the image processing method of the light-emitting unit of the luminescent material of the present invention can split the same light-emitting material into multiple captured images and stitch them into a single image, so that the light-emitting conditions of all the light-emitting units on the same light-emitting material are presented on a single image. To facilitate users to observe the luminous distribution of the luminous material.

The detailed structure, characteristics, assembly or use of the image processing method of the light-emitting unit of the luminescent material provided by the present invention will be described in the detailed description of the subsequent embodiments. However, those with ordinary knowledge in the field of the present invention should be able to understand that the detailed description and the specific embodiments listed for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

The applicant first explains here that in the embodiments and drawings to be introduced below, the same reference numbers indicate the same or similar elements or structural features. It should be noted that the various elements and structures in the drawings are illustrative for convenience and are not drawn based on actual proportions and quantities, and if it is possible in implementation, the features of different embodiments can be applied interactively. Secondly, when it is mentioned that an element is arranged on another element, it means that the aforementioned element is directly arranged on the other element, or the aforementioned element is indirectly arranged on the other element, that is, there is still another element between the two elements. One or more other elements are provided. When it is mentioned that one element is "directly" arranged on another element, it means that no other element is arranged between the two elements.

Please refer to FIG. 1. The luminescent material image processing method (shown in FIG. 2) provided by a preferred embodiment of the present invention is mainly applied to the luminescence distribution detection of a luminescent material 10, the luminescent material 10 includes a body 12 and The positive and negative electrodes 13, 14, and the body 12 has a plurality of light-emitting units 15 (including the light-emitting units 15a~o shown in FIG. 3 and FIG. 4). Alternatively, the electrodes 13 and 14 may both be positive electrodes, and the negative electrode is located on the back of the light-emitting material 10 (the surface provided with the light-emitting unit 15 is the front). The light-emitting material 10 can be (but is not limited to) a light-emitting element such as a VCSEL chip with a plurality of light exit ports or a micro-light-emitting diode array chip with a plurality of micro LEDs. The light-emitting unit 15 on the body 12 is the light-emitting element. The smallest light-emitting unit, that is, the light-emitting port of the VCSEL chip or the light-emitting part of each micro LED, the number is usually hundreds or thousands, and it is not necessarily arranged in a regular matrix. In order to simplify the diagram and facilitate the description, In this embodiment, the light-emitting units 15 of the light-emitting material 10 are drawn into a regular matrix arrangement.

The light-emitting material image processing method of the present invention uses an image capturing device (not shown in the figure) to capture an image when the light-emitting unit 15 of the light-emitting material 10 emits light for the user to observe. The image capture device can be a camera or video camera that uses a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) for the photosensitive element. In order to make it indistinguishable by the naked eye The light of the light-emitting unit 15 is shot into an image, and in order to prevent the captured light from being attenuated due to the transmission distance being too far or being interfered by the ambient light source, the image capturing device needs to be close to the light-emitting material 10 for shooting, as shown in Figure 1 As shown, the visible field of view 20 of the image capturing device is smaller than the distribution range of the light-emitting units 15 of the light-emitting material 10, that is, the field of view 20 can only cover part of the light-emitting units 15 of the light-emitting material 10. This embodiment is for To simplify the drawings and facilitate the description, the field of view range 20 only schematically covers nine light-emitting units 15. In fact, the field of view range 20 usually covers more light-emitting units 15.

The luminous material image processing method includes the following steps:

a) In step S1 in Fig. 2, at least part of the light-emitting unit 15 of the light-emitting material 10 is lighted up.

As mentioned above, the visible field of view 20 of the image capture device can only cover part of the light-emitting units 15 of the light-emitting material 10. That is, in the subsequent steps, the image capture device only captures a part of the light-emitting units 15 for one shot. (In this embodiment, there are nine light-emitting units 15), so in step a), all the light-emitting units 15 of the light-emitting material 10 can be lighted up at the same time, or only a part of the light-emitting units 15 can be lighted up first. Preferably, in step a) of this embodiment, only the light-emitting unit 15 of the first part 16 shown in FIG. 1 can be lighted first, so that the image capturing device can continuously shoot from left to right and sequentially capture the first part 16 of the image when the light-emitting unit 15 emits light, or only the light-emitting unit 15 of the current shot can be lighted up each time.

b) In step S2 in FIG. 2, the image capturing device is used to capture images of a plurality of blocks of the light-emitting material 10 (including the blocks 161 and 162 shown in FIGS. 3 and 4) to obtain respective alignments. It should wait for the multiple detection images of the blocks (including the detection images 31 and 32 shown in FIG. 5), where each block includes a plurality of light-emitting units 15 (in this embodiment, nine light-emitting units 15) that are lit, Each detection image contains a plurality of light spots (in this embodiment, there are nine light spots, such as light spots 311~319 or 321~329 shown in Figure 5), and these light spots correspond to the corresponding detection images. For the light-emitting units 15 of a block, every two adjacent blocks have an overlapping area, and the overlapping area includes at least one light-emitting unit 15 (actually 1-100 or more), which is described in detail below.

For each block captured by the image capture device, when the light emitted by the light-emitting unit is received by the image capture device, the photosensitive element of the image capture device senses the light signal, and the image capture device processes the light signal. The detection image corresponding to the photosensitive state is formed, so that the light from the light-emitting units, which cannot be distinguished by the naked eye, presents a light spot on the detection image. In fact, most of the light spots described in the present invention are in irregular shapes. However, in order to simplify the drawings and facilitate the description, the light spots in the drawings of the present invention are all drawn as circles.

Furthermore, this step b) includes the following steps:

b1) As shown in FIG. 3, make the field of view 20 of the image capturing device cover the first block 161 of the light-emitting material 10 to shoot the first block 161 to obtain the first detection image shown in FIG. 5 31. Wherein, the first block 161 includes a plurality of light-emitting units (in this embodiment, nine light-emitting units 15a~15i) that are lit, and the first detection image 31 includes the first block 161 respectively. The plural first light spots 311 to 319 of the light emitting units 15a to 15i.

b2) As shown in FIG. 4, make the field of view 20 of the image capturing device cover the second block 162 of the light-emitting material 10 to shoot the second block 162 to obtain the second inspection image as shown in FIG. 5 32. Wherein, the second block 162 includes a plurality of light-emitting units (in this embodiment, nine light-emitting units 15g~15o) that are lit, and the second detection image 32 includes the second block 162 respectively. The plurality of second light spots 321-329 of the light-emitting unit 15g-15o. As shown in FIGS. 3 and 4, the first block 161 and the second block 162 both cover light-emitting units 15g-15i, that is, the first block 161 and the second block 162 include a light-emitting unit 15g ~15i overlap area.

Using a method similar to the aforementioned steps b1) and b2), continue to extract from left to right one of the luminous materials 10 is located on the right side of the second block 162 and has an overlapping area with the second block 162 of the third block The third detection image (not shown in the figure), and so on, can continuously shoot the light-emitting unit 15 of the first part 16 of the light-emitting material 10, and obtain multiple detection images.

c) Step S3 in Fig. 2, using the light spots corresponding to the same light-emitting unit 15 in the overlapping area to align, and splicing the detected images of adjacent blocks into one body.

In detail, when the aforementioned first detection image 31 and second detection image 32 are spliced with each other, the first detection image 31 and the second detection image 32 are used to respectively appear and correspond to the same in the overlapping area. Several light spots of the light-emitting unit 15 (for example, the first light points 317, 318, 319 and the second light points 321, 322, and 323 correspond to the light-emitting units 15g~15i) as the first detection image 31 and the second detection image 32 is the alignment reference point when splicing, so that the first detection image 31 and the second detection image 32 can be spliced into one image, so that the light-emitting units 15g~15i in the overlapping area of the first and second blocks 161 and 162 correspond to The light spots overlap each other, that is, as shown in FIG. 5, the first light spots 317, 318, and 319 of the first detection image 31 overlap with the second light spots 321, 322, and 323 of the second detection image 32, respectively. In the same way, the inspection images of other adjacent blocks obtained by shooting the first part 16 of the luminescent material 10 are continuously spliced to the right, for example, the aforementioned third inspection image is spliced on the right side of the second inspection image 32, thereby By analogy, the images of the light-emitting units 15 of the first part 16 of the light-emitting material 10 can be spliced together.

After the image capturing of the first part 16 is completed by the aforementioned steps a) and b), the light-emitting unit 15 of the second part 17 (as shown in FIG. 1), which is one of the light-emitting materials 10, can be lighted up, and similar In the aforementioned steps b1) and b2), continue to capture the detection images of the multiple blocks of the second part 17 from right to left, and so on, to obtain the images of all the light-emitting units 15 of the light-emitting material 10. And use the aforementioned step c) to splice all the detected images into a single image that can display all the light-emitting units 15 of the entire light-emitting material 10. It should be noted that when capturing images of multiple blocks in the second part 17, except for the left and right adjacent detection images where the light spots corresponding to the light-emitting unit 15 overlap, it can be used as a pair of left and right adjacent images when splicing. In addition to the reference point, the detection image captured by a certain block of the second part 17 and the detection image captured by the corresponding blocks in the upper and lower parts of the first part 16 may also have overlapping parts of light spots, which can be used as the upper and lower adjacent images when stitching. Alignment reference points, in other words, the "adjacent blocks" referred to in the present invention may be blocks adjacent to the left and right or adjacent to the top and bottom.

Furthermore, in the aforementioned process, after the image capturing device obtains each of the detected images, the detected images are transferred to a storage device (not shown in the figure) for storage, and then the image processing software can be used to analyze each of the detected images. The detection image is post-processed to obtain and record the characteristics of the light spot of each detection image, such as position, brightness, size, etc., when the detection image is spliced, at least one of the aforementioned characteristics of the light spot can be used to confirm Which light points corresponding to the same light-emitting unit 15 appear in the captured images of adjacent blocks, respectively, so that the light points that should overlap each other can be determined and image splicing is performed, which are described in detail below.

Before illuminating the light-emitting material 10 and capturing images, scan the positions of all the light-emitting units 15 of the entire light-emitting material 10 and record the coordinates of each light-emitting unit 15. When splicing the detected images, it can be obtained by scanning in advance. The position of the light-emitting unit is compared with the position of the field of view 20 relative to the light-emitting material 10 during shooting and the position of the light spot of the detected image relative to the field of view 20 to determine the position of the light-emitting unit 15 corresponding to each light spot (Coordinates), in this way, it can be confirmed which light points corresponding to the same light-emitting unit 15 appear in the captured images of adjacent blocks respectively, and these light points are used as the alignment reference points for image stitching. Image stitching.

Secondly, the method of obtaining the brightness of each light spot can be post-processed on each pixel (pixel) of the detected image using image processing software, and the relative light intensity of each pixel of the detected image is measured, and then the relative light intensity of each pixel of the detected image is measured. The relative light intensity of the occupied pixels is calculated as the average value, and the relative light intensity of each light spot, that is, the brightness of each light spot, is obtained, which can represent the light intensity of each light emitting unit 15. For example, the light spot 311 shown in FIG. 6 occupies nine pixels 33 in the detection image 31, and the relative light intensity of the nine pixels 33 is calculated to obtain the relative light intensity of the light spot 311 , And the relative light intensity of the light spot 311 can represent the light intensity of the light-emitting unit 15a corresponding to the light spot 311. In order to simplify the drawing, only nine pixels 33 of the detection image 31 are schematically drawn in the drawing of the present invention with imaginary lines for the sake of explanation. It is worth mentioning that the relative light intensity mentioned in the present invention is a value calculated by image processing software that can represent the luminous intensity. The relative light intensity measured by the image of a standard light source is compared with the actual luminous intensity of the standard light source. Intensity physical quantity (for example, the unit is candlelight), which can be used to convert the relative light intensity of the measured light point into the actual light intensity of the corresponding light-emitting unit through the comparison data.

In order to simplify the diagram, the present invention draws the light spots into the same size. However, the light-emitting area or beam diameter of each light-emitting unit 15 of the same light-emitting material 10 or light-emitting element is not necessarily the same, so the detected image is actually There will be light spots of different sizes. In other words, the size of each light spot represents the light-emitting area or beam diameter of its corresponding light-emitting unit 15, and the method of obtaining it is to calculate the number of pixels (corresponding pixel area) occupied by each light spot. Since the larger the light-emitting area or beam diameter of the light-emitting unit 15, the larger the corresponding light spot, and the more pixels it occupies, it can be obtained by calculating the number of pixels occupied by each light spot It corresponds to the light-emitting area or beam diameter of the light-emitting unit 15.

When splicing the detected images of every two adjacent blocks with each other, based on the physical or optical characteristics of the aforementioned light spot's position, brightness, size, etc., in the possible overlap area (for example, the right part of the previous frame of image and the next In the left part of the frame image, the light spots corresponding to the features are matched. These light spots exist in the two images and correspond to the same light-emitting unit 15 and can be used as alignment reference points for image splicing. For example, if the brightness (or relative light intensity, the same below) of the light spots 317, 318, 319 in the detected image 31 are respectively 95, 90, and 85, it means that these three light spots 317, 318, 319 There is a brightness relative relationship with a brightness value difference of 5, and the brightness of the light spots 321, 322, and 323 in the detected image 32 are 100, 95, and 90 respectively, which means that the three light spots 321, 322, and 323 are mutually exclusive. There is also a brightness relative relationship with a brightness value difference of 5, from which we can know the relative brightness of the light points 317, 318, 319 of the detected image 31 and the relative brightness of the light points 321, 322, 323 of the detected image 32 Mutual matching (that is, the same or similar within a reasonable error range (for example, within 3%)), it can be determined that the light spots 317, 318, and 319 of the detection image 31 are respectively the light spots 321, 322 of the detection image 32 , 323 should correspond to the same light-emitting unit, that is, light-emitting units 15g, 15h, 15i, because the light spots corresponding to the same light-emitting unit in adjacent detection images should have the same or extremely similar brightness relative relationship. In other words, by comparing the relative brightness relationship between the multiple light spots (for example, the difference relationship between the brightness value between the light spot and the light spot), it can be confirmed that the light spots 317, 318, 319 and the light spots 321, 321, 322 and 323 should be the light spots corresponding to the same light-emitting unit 15g, 15h, 15i, and appear in the detection image 31 and the detection image 32 respectively. In this way, the light spots 317, 318, 319 and the light spots can be used 321, 322, and 323 are used as alignment reference points. The light points 317, 318, and 319 of the detection image 31 are overlapped with the light points 321, 322, and 323 of the detection image 32 respectively, and the detection image 31 and the detection image 32 are spliced into one The frame contains the images of all the light-emitting units 15 in the first and second blocks 161 and 162. Similarly, by comparing the relative size relationship between multiple light spots (for example, the size difference relationship between light spots and light spots) is the same or similar, it is possible to confirm which light spots should be the same light-emitting unit 15 Generated and appear in adjacent images respectively, and these light points can be used as alignment reference points to stitch images.

Theoretically, the brightness values calculated by the same light-emitting unit 15 in different frames of images should be the same, but in fact, taking the above content as an example, the brightness of the light points corresponding to the same light-emitting unit 15 in different frames of images should be the same. The value may have a certain degree of offset (representing that the brightness values of the light spots corresponding to all the light-emitting units 15 in a certain frame of image are all offset by a specific value), so that the two mutually stitched detection images correspond to the same light-emitting unit 15 light spots have different brightness values and cannot be connected accordingly. In this case, at least one of the light spots of the detected image can be compensated for the brightness value of all the light spots (to increase or decrease one of the aforementioned offsets together) Back, so that when different detected images are spliced into a single image, all the light spots have the same brightness reference value. Therefore, the step of splicing the detected images with each other in the present invention may further include a step of adjusting the brightness value of at least part of the light points of the detected image, so that the brightness values of the overlapping light points in the spliced image are consistent. In the foregoing example, the light points 317, 318, and 319 with brightness values of 95, 90, and 85 in the detection image 31 are respectively compared with the light points 321, 318, and 319 with brightness values of 100, 95, and 90 in the detection image 32, respectively. When 322 and 323 overlap each other, the brightness values of all light spots 321~329 in the detection image 32 can be reduced by 5, so that the brightness of light spots 321, 322, and 323 are adjusted to 95, 90, and 85, respectively, and that of light spot 317 , 318, and 319 have the same brightness values. In this way, it can be avoided that there is a measurement between the brightness values of all the light-emitting units 15 in the second block 162 and the brightness values of all the light-emitting units 15 in the first block 161 after splicing. The offset.

In the foregoing example, the method of adjusting the brightness value of the light spots is based on the difference between the brightness values of the two overlapping light spots. However, it can also be adjusted based on the ratio of the brightness values of the two overlapping light spots. More specifically, a light-emitting unit 15 can be selected as a reference light-emitting unit in the overlapping area, for example, the light-emitting unit 15g can be used as a reference light-emitting unit, and the first light spot 317 and the second light corresponding to the reference light-emitting unit 15g can be obtained. The ratio or difference of the brightness values of the points 321, and then adjust the brightness values of all the second light points 321 to 329 according to the ratio or the difference.

In the foregoing example, the difference between the brightness value of the light spot and the light spot is used as a feature, rather than the brightness value of the light spot as a feature, to determine which light spots corresponding to the same light-emitting unit 15 have two images respectively. In order to use these repetitive light spots as the alignment reference point for image stitching, this way can avoid the direct use of the light spot brightness value as a feature, in case there is a measurement deviation in the brightness of the adjacent two frames of images. When shifting the amount, it is impossible to determine which light points corresponding to the same light-emitting unit 15 have problems in the two images respectively (because the light points corresponding to the same light-emitting unit have different brightness values in different frames of images). However, the present invention is not limited to the determination feature of the difference between the brightness value of the light spot and the light spot. For example, there is no measurement offset or the measurement offset is not significant in the two-frame image. When, you can directly use the brightness value of the light spot as the judgment feature; secondly, in addition to the location, brightness or size of the light spot alone as the judgment feature, you can also use two or three of the location, brightness or size of the light spot at the same time As a judgment feature.

It is worth mentioning that, in order to make each detection image and the single image stitched together can clearly show the light point corresponding to each light-emitting unit 15, the detection image is post-processed to obtain the light point of each light The relative light intensity needs to be within a range of relative light intensity. However, if the light-emitting unit 15 of the light-emitting material 10 to be tested has a high luminous intensity, it may cause the detection image to be overexposed, and the relative light intensity of the measured light spot will be large. Some of them are beyond the relative light intensity range. In this case, when the image capturing device captures images of each area of the luminescent material 10, it can pass through a filter element (such as a filter; not shown in the figure) (That is, the filter element is selectively set according to the situation) to filter the light emitted by the light-emitting unit 15 of the light-emitting material 10, so that the measured relative light intensity of each light spot falls within the relative light intensity range or As long as they are all unsaturated, or the relative light intensity of a predetermined number of light points (for example, 90%) or more falls within the relative light intensity range.

In summary, the luminous material image processing method of the present invention can split the same luminous material into multiple captured images and stitch them into a single image, so that the luminous conditions of all light-emitting units on the same luminous material are presented on a single image. To facilitate users to observe the luminous distribution of the luminous material.

Finally, it must be explained again that the constituent elements disclosed in the previously disclosed embodiments of the present invention are only examples and are not intended to limit the scope of the case. Alternatives or changes to other equivalent elements should also be the scope of the patent application for this case. Covered.

10: Luminous materials 12: body 13: Positive electrode 14: Negative electrode 15,15a~15o: light-emitting unit 16: first part 161: first block 162: second block 17: Part Two 20: Field of view 31: The first detection image 311~319: The first point of light 32: Second detection image 321~322: second light spot 33: pixels S1~S3: steps

FIG. 1 is a schematic diagram of a luminescent material in an image processing method of a luminescent material light-emitting unit provided by a preferred embodiment of the present invention. 2 is a flowchart of an image processing method for a light-emitting unit of a light-emitting material provided by the preferred embodiment of the present invention. 3 and 4 are partial enlarged views of the luminescent material, showing part of the steps of the image processing method of the luminescent material light-emitting unit provided by the preferred embodiment of the present invention. 5 is a schematic diagram of another part of the steps of the image processing method of the light-emitting unit of the luminescent material provided by the preferred embodiment of the present invention. Fig. 6 is an enlarged view of part A of Fig. 5.

S1~S3: steps

Claims (15)

An image processing method for light-emitting materials uses an image capture device to capture images of a plurality of light-emitting units of a light-emitting material, and a field of view of the image capture device is smaller than the distribution range of the light-emitting units of the light-emitting material; the light-emitting material The steps of the image processing method include: Light up at least part of the light-emitting unit of the light-emitting material; The image capturing device is used to capture images of a plurality of blocks of the light-emitting material to obtain a plurality of detection images corresponding to the blocks, wherein each block contains a plurality of light-emitting units that are lit, and each The detection image includes a plurality of light spots, and the light spots are respectively corresponding to the light-emitting unit of the block corresponding to the detection image. Every two adjacent blocks has an overlapping area, and the overlapping area includes at least one lighted up area. Light-emitting unit; and Taking at least one light spot corresponding to the illuminated light-emitting unit in the overlapping area as an alignment reference point, and splicing the detected images of the adjacent blocks into a whole. The luminous material image processing method according to claim 1, wherein the step of stitching the detected images with each other is based on at least one of the position, brightness, and size of the light spots to determine at least one The light spots corresponding to the same light-emitting unit in the overlapping area in the detection image existing in the adjacent block are used as the alignment reference point. The luminous material image processing method according to claim 2, wherein the step of splicing the detected images with each other is based on the relative brightness of the light points to determine that a plurality of light spots respectively exist in the adjacent block The light spots corresponding to the same light-emitting unit in the overlapping area respectively in the detected images are used as the alignment reference points. The luminous material image processing method according to claim 3, wherein the relative relationship of the brightness of the light points is the difference relationship of the brightness values of the light points. The luminous material image processing method according to claim 4, wherein the step of stitching the detected images with each other further includes a step of adjusting the brightness value of the light points of at least part of the detected images, so that the adjacent blocks are The difference between the brightness values of the alignment reference points corresponding to the same light-emitting unit in the detected image is less than a predetermined value. The light-emitting material image processing method according to claim 5, wherein the method of adjusting the brightness value of the light spot is to select a light-emitting unit in the overlapping area as a reference light-emitting unit, and obtain the reference light-emitting unit in the adjacent area The ratio or difference of the brightness values of the two corresponding light points in the detected image of the block is adjusted according to the ratio or difference to adjust the corresponding at least one brightness value of all light points in the detected image. The luminescent material image processing method according to claim 2, wherein the step of stitching the detected images with each other is to determine that a plurality of detections exist in the adjacent block according to the brightness values of the light spots The images respectively correspond to the light spots of the same light-emitting unit in the overlapping area as the alignment reference point. The light-emitting material image processing method according to claim 1, wherein the step of capturing images of the plurality of blocks of the light-emitting material by the image capturing device further includes a light-emitting unit that filters the light-emitting material and emits The steps of the light. An image processing method for light-emitting materials uses an image capture device to capture images of a plurality of light-emitting units of a light-emitting material, and a field of view of the image capture device is smaller than the distribution range of the light-emitting units of the light-emitting material; the light-emitting material The steps of the image processing method include: Light up at least part of the light-emitting unit of the light-emitting material; Make the field of view of the image capturing device cover a first block of the light-emitting material to capture the first block to obtain a first detection image, wherein the first block includes a plurality of light-emitting lights Unit, the first detection image includes a plurality of first light spots respectively corresponding to the light-emitting units of the first block; Make the field of view of the image capturing device cover a second block of the light-emitting material to shoot the second block to obtain a second detection image, wherein the second block includes a plurality of lighted up lights Unit, the second detection image includes a plurality of second light spots respectively corresponding to the light-emitting units of the second block, the first block and the second block have an overlapping area, and the overlapping area includes at least one lit The light-emitting unit; and According to at least one of the position, brightness, and size of the first and second light spots, it is determined that at least one light spot corresponding to the same light-emitting unit exists in the first and second detection images as the alignment Reference point, and stitch the first and second detected images into a whole. The luminescent material image processing method according to claim 9, wherein the step of stitching the first detection image and the second detection image is based on the relative brightness of the first light points and the second light points , It is determined that a plurality of light spots respectively corresponding to the same light-emitting unit existing in the first and second detected images are used as the alignment reference points. The luminous material image processing method according to claim 10, wherein the relative relationship of the brightness of the first light point and the second light point is the difference relationship between the brightness values of the first light point and the second light point. The luminous material image processing method according to claim 11, wherein the step of stitching the first detection image and the second detection image with each other further includes a step of adjusting the brightness values of the second light points, so that The difference between the brightness values of the alignment reference points corresponding to the same light-emitting unit in the first and second detected images is less than a predetermined value. The light-emitting material image processing method according to claim 12, wherein the method of adjusting the brightness values of the second light points is to select a light-emitting unit in the overlapping area as a reference light-emitting unit, and obtain the reference light-emitting unit The ratio or difference between the brightness values of the first light spot and the second light spot corresponding to the first and second detection images is adjusted according to the ratio or the difference. The luminous material image processing method according to claim 9, wherein the step of stitching the first detection image and the second detection image is based on the brightness values of the first light points and the second light points, It is determined that a plurality of light spots respectively corresponding to the same light-emitting unit existing in the first and second detection images are used as the alignment reference points. The light-emitting material image processing method according to claim 9, wherein each of the steps of photographing the first block and the step of photographing the second block further includes a step of filtering the light emitted by the light-emitting unit of the light-emitting material .

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