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EP-4740486-A1 - METHOD AND DEVICE FOR THE PERSONALIZED DISPLAYING OF A SCENE ON THE BASIS OF ONE OR MORE IMAGES OF SAID SCENE

EP4740486A1EP 4740486 A1EP4740486 A1EP 4740486A1EP-4740486-A1

Abstract

The invention relates to a method (100) for representing a scene on a display medium, said method (100) comprising at least one iteration of a display phase (102) comprising the following steps: - displaying (104), on said display medium, an image (IC), referred to as current image, of said scene having a sharp area, - detecting (106) a position, referred to as target position, of interest to a user in the current image (IC), - obtaining (108) a new image (IN) of the scene, the sharp area of which is adjusted according to the target position so as to create a sharp display of the scene in the target position, and - displaying (110) the new image (IN). The invention also relates to a computer program, a device, an apparatus and a vehicle implementing such a method.

Inventors

  • LEGROS, ERIC
  • PETITGRAND, Sylvain
  • LUONG, BRUNO

Assignees

  • Fogale Optique

Dates

Publication Date
20260513
Application Date
20230708

Claims (16)

  1. 1. Method (100; 500; 600; 700) of representing a scene on a display medium, said method (100; 500; 600; 700) comprising at least one iteration of a display phase (102) comprising the following steps: - displaying (104), on said display medium, an image (IC), called current image, of said scene having a sharpness zone, - detection (106) of a position, called target position, on said current image (IC) in which a user is interested, - obtaining (108) a new image (IN) of said scene whose sharpness zone is adjusted according to said target position so as to produce a sharp display of said scene at said target position, and - display (110) of said new image (IN).
  2. 2. Method (100; 500; 600; 700) according to the preceding claim, characterized in that the step (108) of obtaining the new image comprises an on-the-fly generation (302, 304) of the new image, by calculation.
  3. 3. Method (100;500;600;700) according to the preceding claim, characterized in that the source image (INP) is an image, previously obtained, and representing the scene clearly in all zones.
  4. 4. Method (100; 500; 600; 700) according to claim 1, characterized in that the step (108) of obtaining the new image comprises a step (206) of selecting the new image in a stack of images (PIL) of said scene, each having a different sharpness zone.
  5. 5. Method (100; 500; 600; 700) according to the preceding claim, characterized in that the image stack (PIL) comprises at least one image captured by an imaging device.
  6. 6. Method (100; 500; 600; 700) according to any one of claims 3 or 4, characterized in that the image stack (PIL) comprises at least one image, obtained by calculation or simulation, from at least one other image.
  7. 7. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the display phase (102) further comprises, after identification of the target position, a step of identifying an object located at the target position, the obtaining of the new image being carried out as a function of said object.
  8. 8. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the display phase (102) further comprises a step of identifying a zone, called target, of the scene comprising the target position, the obtaining of the new image being carried out as a function of said target zone.
  9. 9. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the display phase (102) comprises a step of determining depth data of the scene at said target position, the new image being obtained as a function of said depth data.
  10. 10. Method (100;500;600;700) according to any one of the preceding claims, characterized in that the target position is entered manually by the user.
  11. 11. Method (100;500;600;700) according to any one of the preceding claims, characterized in that the step of detecting the target position comprises a detection of a zoomed region of the current image.
  12. 12. Method (100; 500; 600; 700) according to any one of the preceding claims, characterized in that the step (106) of detecting the target position comprises a detection, by at least one sensor, of a position targeted by a part of the user's body.
  13. 13. Method (100;500;600;700) according to any one of the preceding claims, characterized in that the display phase (102) is repeated for several images in an image stream, in particular a video.
  14. 14. Computer program comprising executable instructions which, when executed by a computing device, implement all the steps of the method (100; 500; 600; 700) according to any one of the preceding claims.
  15. 15. Device (800) comprising means configured to implement all the steps of the method (100; 500; 600; 700) according to any one of claims 1 to 13.
  16. 16. Apparatus (910; 920; 930) comprising: - a means (810) for displaying an image, and - at least one means (612) for detecting a target position, - at least one means (802) for calculation; configured to implement all the steps of the method (100; 500; 600; 700) according to any one of claims 1 to 13.

Description

DESCRIPTION Title: Method and device for personalized display of a scene from image(s) of said scene [0001] The present invention relates to a method for displaying image(s) enabling a personalized display of a scene on a display medium. It also relates to a computer program, a device and an apparatus implementing such a method. [0002] The field of the invention is the field of displaying a digital image on a display medium, such as a display screen or a projection surface. State of the art [0003] When the human eye scans a scene, it observes said scene according to different focalizations to perceive the entirety of a scene. The focalizations used to scan a scene depend directly on the depth of the objects in said scene. Generally, to observe a part of a scene, the human eye adapts the focalization to the depth of the scene in said part, to obtain a clear perception of the scene in said area. [0004] However, the methods for displaying an image of a scene currently known perform the display of said image according to a single focus, namely the focus used to capture said image. When the scene comprises parts located at different depths, the focus corresponds to one of said depths so that only one of the parts of the scene is clear in the displayed image. [0005] Such a display gives a very limited representation of the scene. [0006] Furthermore, such a display does not adapt at all to the user's wishes and confines the user to observing the scene according to the choice made when acquiring the image of the scene. [0007] An aim of the present invention is to remedy at least one of the drawbacks of the state of the art. [0008] Another aim of the invention is to propose a solution for displaying an image of a scene which offers greater freedom for the observer. [0009] Another aim of the invention is to propose a solution for displaying an image of a scene allowing a richer representation of the scene. [0010] Another aim of the invention is to propose a solution for displaying an image of a scene allowing greater customization of the display. Disclosure of the invention [0011] The invention proposes to achieve at least one of the aforementioned aims by a method of displaying a scene on a display medium, said method comprising at least one iteration of a display phase comprising the following steps: - displaying, on said display medium, an image, called current image, of said scene having a sharpness zone, - detection of a position, called target position, on said current image in which a user is interested, - obtaining a new image of said scene whose sharpness zone is adjusted according to said target position so as to produce a sharp display of said scene at said target position, and - displaying said new image. [0012] Thus, in a conventional manner, the current image displayed on the display medium comprises a sharpness zone corresponding to a given depth of field: all the other zones of the current image are blurred. The method according to the invention proposes to determine the target position in which a user observing the current image is interested: this target position corresponds to the target zone of the scene in which the observer is interested. Then, the method according to the invention proposes to modify the display so that said target area is made clear. [0013] Thus, the display of the scene is personalized and adapts to the user's observation so that the target area observed by the user is always sharp. In other words, the sharp area of the scene displayed on a screen follows the user's gaze. Unlike the prior art, the depth of field of an image of a scene is not imposed on the observer. On the contrary, with the invention, the depth of field adapts and adjusts to the observer. [0014] According to the invention, the display medium can be any type of display medium. [0015] For example, the display medium may be a display screen, such as for example a screen of a smartphone, a tablet, a computer, a television, etc. [0016] For example, the display medium may be a surface onto which an image of the scene is projected, such as for example a display surface associated with a projector, etc. [0017] For example, the display medium may be a medium worn by the user, for example a pair of glasses, or goggles, a virtual reality headset, an augmented reality headset, etc. [0018] The display medium may be a display medium equipping the device carrying out the display phase, such as: - a display screen equipping said device, for example in the case of a smartphone, a tablet, etc. or - a projection surface equipping said device, for example in the case of an augmented reality or virtual reality headset. [0019] The display medium may be a medium independent of the device carrying out the display phase, for example in the context of a projector projecting the images onto a display surface. [0020] According to embodiments, the target position may be a point position on the current image. [0021] According to embodi