FR3093886B1 - Method for hiding objects in a video stream - Google Patents
Method for hiding objects in a video stream Download PDFInfo
- Publication number
- FR3093886B1 FR3093886B1 FR1902644A FR1902644A FR3093886B1 FR 3093886 B1 FR3093886 B1 FR 3093886B1 FR 1902644 A FR1902644 A FR 1902644A FR 1902644 A FR1902644 A FR 1902644A FR 3093886 B1 FR3093886 B1 FR 3093886B1
- Authority
- FR
- France
- Prior art keywords
- pixels
- camera
- pixel
- group
- display panel
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay
- H04N5/2723—Insertion of virtual advertisement; Replacing advertisements physical present in the scene by virtual advertisement
Landscapes
- Business, Economics & Management (AREA)
- Marketing (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
L’invention se rapporte à une méthode pour générer un masque pour remplacer un panneau d'affichage à diodes électroluminescentes dans un flux vidéo, le panneau comportant des diodes électroluminescentes dans trois canaux spectraux (R, G, B) du spectre visible, comportant les étapes : - mesure pour chaque pixel ou groupe de pixels d'au moins une image d'une caméra (100) contenant au moins partiellement le panneau d'affichage (107) d'une luminosité mesurée ||P1||, - pour chaque pixel ou groupe de pixels de l'image de la caméra (100), simulation numérique d'une luminosité attendue ||P2|| par la caméra (100) et provenant uniquement du panneau d’affichage (107) au moyen de signaux de contrôle du panneau d'affichage (107), dans cette simulation numérique, les pixels ou groupes de pixels de luminosité attendue ||P2|| ne contenant pas le panneau d’affichage (107) étant marqués, et les pixels ou groupes de pixels correspondant dans l'image de la caméra (100) sont écartés du masque, - au moins pour chaque pixel ou groupe de pixels de l'image prise par la caméra (100) et correspondant à une luminosité reçue par la caméra (100) et provenant du panneau d’affichage (107), calcul d'une différence Δ entre les luminosités du pixel ou groupe de pixels mesurées ||P1|| dans l'image de la caméra (100) et attendues ||P2||, et comparaison d'une valeur absolue de la différence ||Δ|| avec une valeur seuil ||Δ||0, si la valeur absolue de la différence ||Δ|| est supérieure à la valeur seuil ||Δ||0, le pixel ou groupe de pixels considéré est écarté du masque, et si la valeur absolue de la différence ||Δ|| est inférieure à la valeur seuil ||Δ||0, le pixel ou groupe de pixels considéré est ajouté au masque. Figure à publier avec l’abrégé : Fig. 1The invention relates to a method for generating a mask to replace an LED display panel in a video stream, the panel comprising LEDs in three spectral channels (R, G, B) of the visible spectrum, comprising the steps: - measurement for each pixel or group of pixels of at least one image from a camera (100) at least partially containing the display panel (107) of a measured brightness ||P1||, - for each pixel or group of pixels of the image of the camera (100), digital simulation of an expected luminosity ||P2|| by the camera (100) and coming only from the display panel (107) by means of control signals from the display panel (107), in this digital simulation, the pixels or groups of pixels of expected luminosity ||P2| | not containing the display panel (107) being marked, and the corresponding pixels or groups of pixels in the camera image (100) are moved away from the mask, - at least for each pixel or group of pixels of the image taken by the camera (100) and corresponding to a luminosity received by the camera (100) and originating from the display panel (107), calculation of a difference Δ between the luminosity of the pixel or group of pixels measured ||P1 || in the image of the camera (100) and expected ||P2||, and comparison of an absolute value of the difference ||Δ|| with a threshold value ||Δ||0, if the absolute value of the difference ||Δ|| is greater than the threshold value ||Δ||0, the pixel or group of pixels considered is removed from the mask, and if the absolute value of the difference ||Δ|| is less than the threshold value ||Δ||0, the pixel or group of pixels considered is added to the mask. Figure to be published with abstract: Fig. 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1902644A FR3093886B1 (en) | 2019-03-14 | 2019-03-14 | Method for hiding objects in a video stream |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1902644A FR3093886B1 (en) | 2019-03-14 | 2019-03-14 | Method for hiding objects in a video stream |
| FR1902644 | 2019-03-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3093886A1 FR3093886A1 (en) | 2020-09-18 |
| FR3093886B1 true FR3093886B1 (en) | 2022-04-01 |
Family
ID=68072506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1902644A Active FR3093886B1 (en) | 2019-03-14 | 2019-03-14 | Method for hiding objects in a video stream |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3093886B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151067A1 (en) * | 2022-02-14 | 2023-08-17 | Qualcomm Incorporated | Display mask layer generation and runtime adjustment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5940139A (en) | 1996-08-07 | 1999-08-17 | Bell Communications Research, Inc. | Background extraction in a video picture |
| CN1268115C (en) * | 2000-01-31 | 2006-08-02 | 虚拟广告系统Vas有限公司 | Method for modifying visible object shot with television camera |
| GB201204129D0 (en) | 2012-03-08 | 2012-04-25 | Supponor Oy | Apparatus and method for image content detection and image content replacement system |
| GB2502986B (en) * | 2012-06-12 | 2014-05-14 | Supponor Oy | Apparatus and method for image content replacement |
| RU2612378C1 (en) | 2013-03-08 | 2017-03-09 | ДиджитАрена СА | Method of replacing objects in video stream |
| SK500152015A3 (en) * | 2015-04-08 | 2017-11-03 | Enka Jozef Duĺ | Display element with RGB diodes adapted for overlaids by another display during optical sensing by camera, RGB diode for use in said display element and method of processing picture. |
| EP3094082A1 (en) | 2015-05-13 | 2016-11-16 | AIM Sport Vision AG | Digitally overlaying an image with another image |
-
2019
- 2019-03-14 FR FR1902644A patent/FR3093886B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3093886A1 (en) | 2020-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PLFP | Fee payment |
Year of fee payment: 2 |
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| PLSC | Publication of the preliminary search report |
Effective date: 20200918 |
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| PLFP | Fee payment |
Year of fee payment: 3 |
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| PLFP | Fee payment |
Year of fee payment: 4 |
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| PLFP | Fee payment |
Year of fee payment: 5 |