EP3956859A1 - Procede de detection de vitroceramique - Google Patents
Procede de detection de vitroceramiqueInfo
- Publication number
- EP3956859A1 EP3956859A1 EP20716510.1A EP20716510A EP3956859A1 EP 3956859 A1 EP3956859 A1 EP 3956859A1 EP 20716510 A EP20716510 A EP 20716510A EP 3956859 A1 EP3956859 A1 EP 3956859A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass
- ceramic
- cullet
- fragments
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/0008—Industrial image inspection checking presence/absence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
Definitions
- the present invention relates to a method for the automated detection of materials of the glass-ceramic type among a sample of fragments of glass, or cullet.
- the invention relates to the field of the glass-based product manufacturing industry.
- Samples of glass fragments, or cullet are used in the manufacture of various glass products. For example, in the field of insulation, it is common practice to use glass fibers, obtained largely from cullet. Cullet can also be used in the manufacture of bottles and other glass containers.
- the manufacture of fiberglass takes place by a process that first involves heating the cullet in a glass furnace to a temperature sufficient to melt the glass, or around 1,500 ° C. The molten glass is then conveyed into a centrifugation device of the fiberizing plate type, leading to the creation of fibers which are glued on their passage to a conveyor on which they are then dried, cooked and shaped.
- cullet may contain not only glass, but also other materials, including
- glass-ceramics which have properties different from those of glass, can cause significant problems in the manufacturing processes of cullet-based products, by damaging the machines and / or by causing defects in the products.
- the glass-ceramics which have a melting point of about 1700 ° C, are not melted in the glass furnace in which the glass is melted at 1500 ° C.
- the molten material leaving the furnace is introduced into an internal centrifugation device of the fiberizing plate type, the pieces of
- Vitroceramics contained in the molten glass block the holes in the fiberizing plate, the diameter of which may in particular be less than 1 mm. The entire production chain must then be stopped. In the manufacture of bottles and containers based on cullet, the pieces of glass-ceramics present in the cullet can cause local fragilities on the products obtained and / or aesthetic problems.
- the present invention corrects errors that may result in the removal of glass fragments that are not glass fragments.
- a colorimetric processing step of the image during which at least the group of pixels of said image corresponding to fragments assimilated to glass-ceramic is processed by a colorimetric image processing module according to an RGB model.
- this colorimetric treatment step makes it possible to check the quality of the detection of the glass-ceramic detection step and to verify whether the fragments assimilated to glass-ceramic do indeed correspond to glass-ceramic and not to another type. of glass.
- the step of detecting the glass ceramic in the cullet can be performed by any method. It can be a colorimetric, shading or other method. During this detection step, part of the cullet is assimilated as being fragments likely to be glass-ceramic, and the rest of the process aims to confirm this
- the step of detecting the glass ceramic makes it possible to assimilate a part of the cullet as being fragments of glass ceramic and the step
- Obtaining Image Obtains an image in which one or more pixels are identified as corresponding to fragments.
- an image of the cullet can be acquired by a camera and associated with information relating to the location of the pixels corresponding to the fragments assimilated to glass-ceramic.
- obtaining a digital image identifying the fragments assimilated to glass ceramic can consist of processing the image to form outline of pixels corresponding to fragments assimilated to glass-ceramic.
- a digital image is sent to a colorimetric processing module according to an RGB model with an identification of the pixels or groups of pixels corresponding to the presence in the cullet of fragments assimilated to glass ceramic.
- the pixel is the basic unit used to define the quality of an image in digital form. In other words, it corresponds to a specific point in the image.
- the number of pixels in the image depends on the resolution of a device image acquisition chosen to be integrated into the process. As was specified above, by pixels corresponding to fragments assimilated to glass-ceramic, it is understood that one has identified in the treated image at least one zone which corresponds to a fragment of glass-ceramic in the cullet.
- fragments assimilated to glass-ceramic may not really be fragments of
- the third step of the process establishes this verification.
- the digital image obtained with identification of the pixels corresponding to the fragments assimilated to glass-ceramic is therefore reprocessed by means of a colorimetric image processing module according to an RGB model.
- the RGB model is a color definition model whose acronym stands for Red Green Blue (Red Green Blue).
- the RGB model is based on the value of three data to define each of the color shades in the visible domain. Each color is defined according to the data corresponding to the value of each of the three primary colors used to define this color, namely the red data R, the green data V and the blue data B.
- Each of the RGB data is included between 0 and 255. The course of this step of the method will be described in more detail below.
- the RGB model colorimetric image processing module converts at least the pixels of the image resulting from the detection of glass ceramic fragments into RGB data.
- the RGB model color image processing module can convert the entire processed image to RGB data.
- the colorimetric image processing module processes only the pixels corresponding to fragments assimilated to glass-ceramic. It should be understood here that the method according to the invention makes it possible to check a prior detection of fragments of glass-ceramic in a cullet in the sense that it makes it possible to verify that fragments similar to glass-ceramic are indeed glass ceramic fragments. The method according to the invention does not seek to carry out a second detection step in order to detect, if necessary, fragments of glass ceramic which have escaped the detection systems during a previous step.
- the method is thus provided so that the colorimetric image processing module according to an RGB model converts into RGB data only the part of the image necessary for the control according to the invention.
- prior detection that is to say checking whether the fragments identified are indeed glass-ceramic.
- the fact of targeting this control step only on the pixels corresponding to the glass-ceramic fragments thus limits the duration of the additional colorimetric treatment by the RGB model.
- the processing module executes instructions
- RGB model image colorimetric processes the pixels or groups of pixels converted to RGB data only considering the red R and blue B data of the RGB model.
- the RGB model corresponds to a set of three data.
- the inventors have demonstrated by various tests that only the R and B data are of interest when verifying the image comprising pixels corresponding to fragments assimilated to glass-ceramic. This allows the colorimetric image processing module according to an RGB model to be configured to only calculate the red R and blue B data of the RGB model, by deliberately omitting the calculation of the green data V, and therefore to calculate only two data instead of three, thus increasing the speed of execution and therefore the efficiency of the process.
- the processing module executes instructions
- colorimetric image according to an RGB model calculates the ratio - between the blue data B and the red data R for each pixel or groups of pixels corresponding to fragments of the cullet having been assimilated to fragments of glass-ceramic.
- the ratio - corresponds to a ratio between the data of blue and red found in the images taken or in the fragments of the cullet revealed as being fragments of glass-ceramic.
- the ratio between the blue and red data makes it possible to distinguish between the glass ceramic and the fragments which are not fragments of glass ceramic but which have been assimilated as such by the initial detection step in the cullet, also called false positives, such as this will be explained later.
- the processing module executes instructions
- g colorimetric image according to an RGB model compares the ratios - between the blue data B and the red data R as they have been calculated beforehand at a threshold value.
- the inventors have observed that the ratios could be compared with a threshold value judiciously chosen to distinguish glass ceramic from false positives.
- the threshold value is 0.5. This value of 0.5 was determined by the inventors because it leaves no room for doubt, the fragments of cullet relating to the pixels or groups of pixels having, as the ratio of blue data B by red data R, a value greater than the value. threshold of 0.5 are confirmed to be glass ceramic fragments.
- glass ceramic is the g
- Vitroceramic is therefore the only type of glass exhibiting the following two conditions: to be shown to be positive during the g
- the glass fragments used for bottles of wine or champagne have optical properties approaching the optical properties of glass-ceramic so that they can be likened to fragments of glass-ceramic during the first step process and constitute false positives.
- glass fragments likely to be considered as false positives such as glass fragments used for wine or champagne bottles, have a ratio - R of between 0.07 and g
- glass-ceramic is made by colorimetric analysis.
- colorimetric means all types of processing module making it possible to obtain a correspondence of the shades of color appearing on an image acquired in encrypted or lettered data.
- glass-ceramic is made by colorimetric image processing according to an HSV model.
- the step of detecting the glass ceramic can be a method of detecting the glass ceramic by treatment
- the colorimetric processing according to an HSV model is carried out on an image of the cullet acquired by an image acquisition device, for example a camera.
- HSV color space in French TSV, is an acronym meaning Tint Saturation Value.
- Hue is a term that can be represented by a circle and is defined by a data range from 0 to 360 °. Each degree represents a shade, according to the following table:
- Saturation is a term between 0 and 1, reflecting the notion of the amount of color. A saturation approaching 0 will tend to be more bland while a saturation approaching 1 will be more saturated.
- the value is also a term between 0 and 1, reflecting the notion of shine or luminosity. Any data with a value of 0 is associated with a black color. The closer the value is to 1, the lighter the associated color will be.
- the set of different HSV data can be represented by a cone of revolution, within which all shades of visible color can be converted to HSV terms and all correspond to a point on the area of that cone of revolution.
- Hue is the circumference of the cone
- Saturation is the radius of the cone
- Value is the height of the cone.
- the colorimetric image processing module processes the images acquired by the image acquisition device by considering only data from the HSV model, and more particularly
- the HSV model corresponds to a set of three data. Nevertheless, the inventors have demonstrated by various tests that only the H-shade is a datum of interest during the analysis of the cullet by the present detection method. This allows the detection method to be parameterized to only calculate the data for Shade H of the HSV model and therefore to calculate only one data instead of three, thus increasing the speed of execution and therefore the efficiency of the process.
- Colorimetric processing according to an HSV model is carried out by determining a single data item per pixel or group of pixels of the analyzed image, then by comparison with a range of data.
- the precision of the treatment may vary depending on the need and / or the size of the cullet. Image processing can therefore be performed for each pixel of the image captured by the image acquisition device to ensure better accuracy.
- the processing can also be done by group of pixels in order to process a set of pixels with less precision but a faster processing speed.
- the use of one or the other of the modes of analysis depends on factors such as the size of the fragments of the cullet, the number of fragments, or the risk of a stack of fragments on top of each other in the cullet deposited on the reflective surface.
- the colorimetric treatment according to an HSV model makes it possible to assimilate fragments of the cullet as fragments of glass-ceramic. After the actuation of the light sources to direct their radiation on the surface of the cullet, the capture of the light reflected by the image acquisition device and the colorimetric processing of this same image by an HSV model, the processed image is analyzed and fragments of the cullet may or may not appear a certain color.
- the glass ceramic fragments appear of a certain color on the image captured and processed according to an HSV model, which differentiates them from the rest of the cullet. Theoretically, the glass ceramic exhibits a color specific to itself during the implementation of the detection method on a cullet.
- the thresholding of the colorimetric treatment is based on the color reflected by the glass-ceramic when exposed to the rays emitted simultaneously by the two types of light sources. Due to the presence of metal oxides in its composition, glass-ceramic absorbs part of the ultraviolet rays it receives. These metal oxides absorb ultraviolet rays and corresponding crystals scatter blue light, hence the fact that glass ceramic is in theory the only type of glass that appears yellow when a cullet is analyzed during the detection process, hence the choice of this threshold. After colorimetric processing, the calculation module can thus be configured to assimilate to glass-ceramic any pixel or group of pixels whose hue H is between 50 ° and 70 °.
- the invention also covers a system for implementing the detection method described above, comprising a glass ceramic detection module and a colorimetric image processing module according to an RGB model.
- the system for implementing this method comprises a module for detecting the glass ceramic which can be of any nature.
- colorimetric image according to an RGB model takes care of the step of verifying the fragments detected positive in the same way as described above, regardless of the nature of the glass-ceramic detection module.
- the invention also relates to an installation for manufacturing glass fibers, hollow glass or flat glass comprising at least one glass furnace and forming stations, in which cullet is poured into the glass furnace to obtain molten glass. intended for supplying the forming stations, said installation comprising a system for implementing the detection method as described above, said operating system being positioned on the path of the cullet towards the glass furnace.
- FIG. 1 is a schematic representation of the detection system according to one embodiment of the invention
- FIG. 2 is a schematic representation of the behavior of the
- FIG. 3 is a schematic representation of the detection method implemented by the system described above.
- FIG. 4 is a graph showing the percentage of light transmission of different types of glasses as a function of the wavelength of the light received.
- the detection system which is taken as an example here comprises a colorimetric processing module according to a FISV model. It is this processing module that detects the glass ceramic.
- Figure 1 shows a detection system 1 according to the invention.
- This system 1 comprises two types of light sources, among which a first type corresponding to a white light source 3 and a second type corresponding to an ultraviolet type light source.
- the white light source (s) 3 and the monochromatic ultraviolet type light source (s) 4 are fixed on a structure 13 which supports the light sources and comprises means for supplying electrical energy.
- An image acquisition device 5 overhangs the structure 13. In the example illustrated, the image acquisition device 5 is supported by a fixing means 36, but it can also be directly integrated within the structure. 13.
- the light rays emitted by the white light source 3 are filtered directly by a polarizer 16, in order to limit the light intensity and to avoid the parasitic reflections which can be treated subsequently.
- the rays emitted by the monochromatic ultraviolet type source 4 are for their part filtered by a band-pass filter 15 centered at 365 nm in order to obtain purely monochromatic ultraviolet radiation.
- the arrangement of the light sources and the filters is identical on the other side of the structure 13 in order to have uniform overall lighting.
- the white light source 3 and the monochromatic ultraviolet type light source 4 emit light rays 12 in the direction of an emission zone 1 1.
- the emission zone 1 1 coincides with the capture field of the device. image acquisition 5.
- the light rays 12 emitted by the white light source 3 and the monochromatic ultraviolet type light source 4 are projected onto a reflecting surface 10 where a cullet 2 is placed.
- the reflecting surface 10 is arranged on a conveyor 8 going in a direction 9.
- the light rays emitted by the white light source 3 and by the monochromatic ultraviolet type light source 4 have a variable behavior when they are reach the emission zone where the cullet 2 is placed, as shown in Figure 2.
- Light rays 14 are reflected by the surface 10 in the direction of the image acquisition device 5. These light rays 14 are filtered by an analyzer 18, crossed with the polarizer 16. The combination of the polarizer 16 and the analyzer 18 is intended to limit the parasitic reflections coming from the light rays emitted by the white light source 3, which would make the image processing difficult to interpret.
- the image acquisition device 5 captures an image of the cullet 2 using light rays 14 reflected by the reflecting surface 10.
- the image processing device 6 comprises a module for detecting the glass ceramic 17.
- the image processing device 6 is a colorimetric image processing module according to an HSV model, which is configured to analyze the image pixel by pixel or by sets of pixels and convert these pixels into HSV data.
- Each datum of hue H determined is then compared with at least one threshold datum.
- the data of shade H is compared with a minimum threshold of 50 ° and a maximum threshold of 70 °. In other words, if a pixel or a set of pixels has HSV data equal to
- this pixel or set of pixels is considered to correspond to a fragment assimilated to glass-ceramic.
- This information is communicated either to a user of system 1 so that he can manually intervene and remove the glass-ceramic fragment from the cullet, or to an automated device making it possible to eject the assimilated glass-ceramic fragments in a targeted manner.
- an additional colorimetric treatment can be implemented.
- the HSV data of the pixels corresponding to fragments assimilated to glass-ceramic by the colorimetric image processing module according to an HSV model are then converted into RGB data by means of a colorimetric image processing module according to a model.
- the colorimetric processing module according to an RGB model 7 can also convert the whole of the image acquired by the image acquisition device 5. The image is then directly transmitted to the colorimetric processing module. according to an RGB model 7.
- FIG. 2 is a schematic representation of the light radiation from light sources on two different types of glass. For reasons of schematic simplification, only two rays from each light source are shown, but in reality the light sources emit in a multitude of directions, for example at an emission angle of 90 °. Furthermore, the phenomena of refraction of light rays on the glass fragments are not shown, again for the sake of simplifying the figure.
- FIG. 2 represents the white light source 3 and the monochromatic ultraviolet type light source 4 each emitting their respective light radiation.
- the white light source 3 emits white light rays 26, shown in solid lines
- the monochromatic ultraviolet type light source 4 emits ultraviolet rays 25 with a wavelength of 365nm, shown in dotted lines.
- the classic glass fragment 23 allows all types of light rays to pass.
- the white light ray 26 and the ultraviolet ray 25 pass through the structure of the conventional glass fragment 23, are reflected by the reflecting surface 10 and pass through the structure of the conventional glass fragment 23 again towards the image acquisition device. 5.
- the glass-ceramic fragment 24 has optical properties different from the conventional glass fragment 23.
- the glass-ceramic has the particularity of absorbing a majority of the ultraviolet rays as will be explained in more detail with reference to FIG. 4.
- the ultraviolet ray 25 does not pass through. therefore not the structure of the glass ceramic fragment 24 in its entirety and is absorbed in the great majority.
- an ultraviolet ray with a wavelength of 365nm is hardly reflected in the direction of the image acquisition device 5 if its path passes through a fragment of glass-ceramic.
- the ray of white light 26, just as with the conventional glass fragment 23, passes through the glass ceramic fragment 24 and is reflected in the direction of the imaging device 5.
- the image acquisition device 5 receives all the white light rays 26 from the white light source 3 and the ultraviolet rays 25 from the ultraviolet type light source
- FIG. 3 is a schematic representation of the detection method implemented by the system described above.
- a step in the scrolling of the conveyor 27 at a given speed involves moving one or more cullet on their reflecting surface or directly on the reflecting mat of the conveyor.
- the scrolling of the conveyor 27 generates a positioning step 29 of the cullet in the emission zone.
- an emission step 28 of the light radiation from the light sources is triggered in order to illuminate the cullet present in the emission zone.
- the combination of the step 29 of positioning the cullet in the emission zone and the step 28 of emitting the light radiation from the light sources leads to a step of acquiring the image 30 by the device. image acquisition.
- a detection process 32 begins.
- the captured image is subjected to a step of detecting the glass ceramic 33, which is here, by way of example, a step of colorimetric processing of the image according to an HSV model.
- the glass ceramic detection step 33 analyzes the image acquired during the image acquisition step 30, pixel by pixel or by groups of pixels, by applying to this image a thresholding of H between the values 50 ° and 70 °, so that 50 ° ⁇ H ⁇ 70 °, for defined S and V data. If no pixel or group of pixels corresponds to this threshold, the detection process 32 ends, and a new cycle resumes with a new cullet passing on the conveyor.
- the method continues to end with a step of colorimetric processing of the image according to an RGB model 34.
- a colorimetric image processing module according to an RGB model 7 with a processed digital image, resulting from the previous step of detecting the glass-ceramic, said image comprising in particular at least one group of pixels corresponding to a fragment assimilated to glass ceramic.
- the processing of the image is carried out by association of the acquired image and a digital marking of the pixels or groups of pixels corresponding to what could be assimilated as glass-ceramic.
- Glass-ceramic is done by other methods, at this point a digital image of the cullet is acquired and processed to identify on the image what could be likened to glass-ceramic.
- the step of colorimetric processing of the image according to an RGB model 34 several sub-steps follow one another: first of all the image is processed according to an RGB model, either the image in its entirety, or only the pixels assimilated to glass-ceramic, ie corresponding to the thresholding of the data item H of the HSV model. This is a sub-step of converting the pixels or groups of pixels of the image into RGB data 36. For each of these pixels, the red data R and the blue data B are recovered, the two data being included. between 0 and 255.
- the colorimetric image processing module according to an RGB model then calculates a g
- the threshold of - is set as
- the ratio of one or more pixels or one or more groups of pixels is greater than this threshold value of 0.5, then the corresponding fragment is confirmed as being a glass ceramic fragment. If this same ratio is less than the threshold value of 0.5, then the corresponding fragment is identified as being a false positive not being a glass ceramic fragment.
- the fragments of interest are targeted, that is to say the fragments which have been assimilated to fragments of
- fragments of interest are tracked by taking into account the speed of movement of the cullet as a function of the speed of the conveyor. It is understood that the fragments of interest are targeted in that, from a known position at time t, the system can accurately determine their position at time t + At.
- the step of removing fragments of glass ceramic 35 can be carried out by means of a blower device, present along the conveyor, downstream of the detection system. Thanks to the follow-up calculation step 31, the blower device, having received the location information from the calculation module, activates where the glass ceramic fragments are located and at the right time. The glass ceramic fragments are then expelled from the cullet.
- Fig. 4 is a graph showing the percentage of transmission of light through different types of glass as a function of the wavelength of emitted light.
- curves corresponding to four different types of glass appear on this graph: a curve 19 corresponding to conventional glass, i.e. the most common glass, a curve 20 corresponding to vitroceramic, a curve 21 corresponding to bottle glass, commonly used to make glass. wine bottles, and a curve 22 corresponding to the champagne glass, commonly used to make champagne bottles.
- Concerning the abscissa axis of the graph the zone less than 400nm corresponds to the domain of ultraviolet rays while the area greater than 400nm corresponds to the visible domain.
- the curve of conventional glass 19 and the curve of glass ceramic 20 have a similar appearance, namely a curve corresponding to a sharp increase in the percentage of light transmission until reaching a plateau between 85 and 90% transmission.
- the major difference between these two curves lies in the fact that the curve of conventional glass 19 increases sharply at a shorter wavelength than the abrupt increase in the curve of glass ceramic 20.
- Conventional glass therefore has a percentage of transmission. much higher than that of glass-ceramic in ultraviolet light. This difference justifies the use of a monochromatic ultraviolet type light source with a wavelength of 365nm, because at this value, the percentage of light transmission of conventional glass is more than 80% (point P1 on the figure 4) while that of
- the image acquisition device therefore captures ultraviolet rays of 365nm and white light rays of the entire visible spectrum, for example 550nm, if they have passed through a conventional glass fragment, but does not capture the totality of ultraviolet rays which encountered a fragment of
- the lighting conditions of the detection system are such that the glass ceramic, through its optical properties, appears with a nuanced tint around yellow, corresponding to the selected HSV threshold data, ie 50 ° ⁇ H ⁇ 70 °.
- the shade of color corresponding to glass ceramic is due to several factors, including light sources or the type of image acquisition device.
- the other two curves namely the curve of the bottle glass 21 and the curve of the champagne glass 22 also have a similar appearance with respect to each other.
- bottle glass and champagne glass have a percentage of light transmission similar to the percentage of light transmission of glass-ceramic, especially at 365nm which corresponds to the emission wavelength of the source luminous monochromatic ultraviolet type.
- the bottle glass and the champagne glass therefore absorb the ultraviolet rays emitted by the monochromatic ultraviolet type light source in the same way as the glass ceramic.
- the value of the wavelength where the two types of glass best transmit light is of the order of approximately 550-570nm. In the visible spectrum, this wavelength range corresponds to a yellowish green color.
- bottle glass and champagne glass have substantially the same UV absorption properties as glass ceramic, and their best percentage of light transmission corresponds to the yellowish-green color, which is a shade quite similar to the shade of thresholding of the glass-ceramic when the image acquired by the image acquisition device is processed by the colorimetric image processing module according to an HSV model.
- the bottle glass and the champagne glass are therefore two types of glass likely to be false positives, that is to say that they are likely to be assimilated to fragments of glass-ceramics when they are not. not during analysis by the colorimetric image processing module according to an HSV model.
- the presence of the colorimetric image processing module according to an RGB model then takes on its full meaning being
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Signal Processing (AREA)
- Spectrometry And Color Measurement (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Spectroscopy & Molecular Physics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1904247A FR3095275B1 (fr) | 2019-04-19 | 2019-04-19 | Procédé de détection de vitrocéramique |
| PCT/EP2020/060247 WO2020212266A1 (fr) | 2019-04-19 | 2020-04-09 | Procede de detection de vitroceramique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3956859A1 true EP3956859A1 (fr) | 2022-02-23 |
Family
ID=67742711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20716510.1A Pending EP3956859A1 (fr) | 2019-04-19 | 2020-04-09 | Procede de detection de vitroceramique |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US12254614B2 (fr) |
| EP (1) | EP3956859A1 (fr) |
| JP (1) | JP7668744B2 (fr) |
| KR (1) | KR20210154827A (fr) |
| AR (1) | AR118732A1 (fr) |
| BR (1) | BR112021020810A2 (fr) |
| CA (1) | CA3137266A1 (fr) |
| CL (1) | CL2021002704A1 (fr) |
| CO (1) | CO2021013672A2 (fr) |
| FR (1) | FR3095275B1 (fr) |
| MX (1) | MX2021012717A (fr) |
| WO (1) | WO2020212266A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3116272B1 (fr) * | 2020-11-17 | 2024-01-19 | Saint Gobain Isover | Procédé de traitement d’un calcin par analyse colorimétrique |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2195438A (en) * | 1986-09-26 | 1988-04-07 | Pilkington Brothers Plc | Detecting unwanted materials among cullet |
| JPH11138109A (ja) * | 1997-11-06 | 1999-05-25 | Babcock Hitachi Kk | ガラスびん選別装置 |
| US8436268B1 (en) * | 2002-08-12 | 2013-05-07 | Ecullet | Method of and apparatus for type and color sorting of cullet |
| US7351929B2 (en) * | 2002-08-12 | 2008-04-01 | Ecullet | Method of and apparatus for high speed, high quality, contaminant removal and color sorting of glass cullet |
| JP2004305965A (ja) * | 2003-04-09 | 2004-11-04 | Toyo Glass Co Ltd | 物体選別装置、物体選別方法および物体選別プログラム |
| JP2005181075A (ja) | 2003-12-18 | 2005-07-07 | Asahi Glass Co Ltd | 車両用ガラスカレットの分離方法及びその装置 |
| US7386997B2 (en) | 2004-11-12 | 2008-06-17 | Culchrome, Llc | System for and method of batch analysis and optimization for glass manufacturing |
| AT8647U1 (de) * | 2005-08-08 | 2006-10-15 | Binder Co Ag | Verfahren zur detektion und sortierung von glas |
| KR101090772B1 (ko) * | 2011-07-14 | 2011-12-08 | (주)한맥 | 유리 조각의 색상 선별 시스템 |
| FR2994568B1 (fr) * | 2012-08-14 | 2021-06-04 | Eurokera | Article vitroceramique a affichage lumineux colore |
| FR2997942B1 (fr) * | 2012-11-14 | 2019-10-18 | Eurokera S.N.C. | Article vitroceramique a affichage lumineux |
| JP6892249B2 (ja) | 2016-11-24 | 2021-06-23 | 東洋ガラス株式会社 | カレット分別装置およびカレット分別方法 |
| DE102018110908A1 (de) * | 2017-12-22 | 2018-06-21 | Schott Ag | Transparente, eingefärbte Lithiumaluminiumsilikat-Glaskeramik sowie Verfahren zur Herstellung und Verwendung der Glaskeramik |
| IT202000007345A1 (it) * | 2020-04-07 | 2021-10-07 | Stazione Sperimentale Del Vetro Soc Consortile Per Azioni In Sigla Stazione Sperimentale Del Vetro S | Attrezzatura per la rilevazione di elementi inquinanti in rottami di vetro |
-
2019
- 2019-04-19 FR FR1904247A patent/FR3095275B1/fr active Active
-
2020
- 2020-04-09 BR BR112021020810A patent/BR112021020810A2/pt unknown
- 2020-04-09 CA CA3137266A patent/CA3137266A1/fr active Pending
- 2020-04-09 EP EP20716510.1A patent/EP3956859A1/fr active Pending
- 2020-04-09 WO PCT/EP2020/060247 patent/WO2020212266A1/fr not_active Ceased
- 2020-04-09 MX MX2021012717A patent/MX2021012717A/es unknown
- 2020-04-09 JP JP2021561979A patent/JP7668744B2/ja active Active
- 2020-04-09 US US17/604,647 patent/US12254614B2/en active Active
- 2020-04-09 KR KR1020217037493A patent/KR20210154827A/ko active Pending
- 2020-04-17 AR ARP200101104A patent/AR118732A1/es active IP Right Grant
-
2021
- 2021-10-13 CO CONC2021/0013672A patent/CO2021013672A2/es unknown
- 2021-10-15 CL CL2021002704A patent/CL2021002704A1/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US20220196544A1 (en) | 2022-06-23 |
| KR20210154827A (ko) | 2021-12-21 |
| CO2021013672A2 (es) | 2022-01-17 |
| CA3137266A1 (fr) | 2020-10-22 |
| MX2021012717A (es) | 2022-01-31 |
| FR3095275A1 (fr) | 2020-10-23 |
| WO2020212266A1 (fr) | 2020-10-22 |
| US12254614B2 (en) | 2025-03-18 |
| JP2022531098A (ja) | 2022-07-06 |
| AR118732A1 (es) | 2021-10-27 |
| FR3095275B1 (fr) | 2021-09-03 |
| BR112021020810A2 (pt) | 2021-12-14 |
| CL2021002704A1 (es) | 2022-11-25 |
| JP7668744B2 (ja) | 2025-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2992315B1 (fr) | Procédé et dispositif d'observation et d'analyse de singularités optiques portées par des récipients en verre | |
| EP3443330B1 (fr) | Méthode et système de vérification d'une installation d'inspection optique de récipients en verre | |
| EP3956652B1 (fr) | Système et procédé de détection de vitrocéramique | |
| EP4457507B1 (fr) | Procede et dispositif d'inspection de recipients chauds en verre en vue d'identifier des defauts | |
| EP2016397A1 (fr) | Dispositif et procede de detection de defaut dans une bague d'article verrier | |
| EP3887069B1 (fr) | Systeme et procede de tri et de caracterisation de dechets, en particulier des emballages | |
| WO2024141740A1 (fr) | Dispositif et procédé d'analyse d'un relief d'inspection d'une paroi d'un récipient en verre | |
| EP3956859A1 (fr) | Procede de detection de vitroceramique | |
| EP3614305B1 (fr) | Authentification par indice optique | |
| EP4736111A1 (fr) | Procede et dispositif pour inspecter des recipients selon au moins deux directions d'observation differentes en vue de classer les recipients | |
| WO2001055705A1 (fr) | Installation et procede pour la detection de glacures | |
| RU2802531C2 (ru) | Система и способ обнаружения стеклокерамики | |
| RU2814069C2 (ru) | Способ обнаружения стеклокерамики | |
| EP2027433B1 (fr) | Procédé pour mesurer l'épaisseur d'un revêtement sur un substrat | |
| FR3145297A1 (fr) | Procédé et système de détermination du type de verre composant un élément verrier | |
| FR3128022A1 (fr) | Dispositif et procédé opto-informatique d’analyse en lumière traversante d’un récipient en verre à l’aide d’une caméra numérique polarimétrique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20211012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20251201 |