METHOD FOR PROJECTING IMMERSIVE AUDIOVISUAL CONTENT

Abstract

The method for projecting immersive audiovisual content comprises a cropping step (2) wherein a digital image is cropped (1), selecting its size; and also comprises correcting (3) the optical distortion of said digital image (1) for the projection thereof.

It enables a method for projecting immersive-type optimised audiovisual content in real spaces, for a user or group of users.

Claims

1. A method for projecting immersive content, comprising: cropping a digital image; selecting its size; and correcting the optical distortion of said digital image for its projection.

2. The method for projecting immersive content, according to claim 1, further comprising a correction step wherein the digital image is corrected in accordance with the space where said digital image is projected.

3. The method for projecting immersive content, according to claim 2, wherein said correction step comprises correcting the digital image in accordance with the geometry and/or the colour of said space.

4. The method for projecting immersive content, according to claim 1, wherein said correcting the optical distortion is performed using optical distortion data from the display lens through which said digital image will be projected.

5. The method for projecting immersive content, according to claim 4, wherein said correcting the optical distortion is performed by means of reverse deformation to the deformation generated by the lens.

6. The method for projecting immersive content, according to claim 4, wherein said lens is a fisheye lens.

7. The method for projecting immersive content, according to claim 2, wherein said correction step is performed using an infrared depth camera or using software.

8. The method for projecting immersive content, according to claim 1, wherein said digital image is an equirectangular image.

9. The method for projecting immersive content, according to claim 2, wherein said correction step is performed using colour and depth sensors integrated in the display or external to the display.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0020] What follows is a description of drawings that help to better understand the invention and which are explicitly related to an embodiment of said invention which is presented as a non-limiting example thereof.

[0021] FIG. 1. Shows a block diagram of the audiovisual content projection method in accordance with the present invention.

PREFERRED EMBODIMENT OF THE INVENTION

[0022] The method of the present invention is used to project immersive audiovisual content optimised for the projection thereof in a space, for example, a room.

[0023] The method of the present invention is performed on a digital image 1 that represents a three-dimensional environment in two dimensions. For example, this digital image 1 is preferably an equirectangular image which is an industry standard.

[0024] The method in accordance with the present invention comprises a cropping step 2 wherein said digital image is cropped 1, i.e. selecting its size and coordinates. This cropping step wherein the digital image is cropped can be performed using the three-dimensional virtual browsing data of a user control device 21, for example, a personal smart phone, an application or a website that includes a spatial browsing interface, although it is not excluded that it will be performed using data sent by other control devices or a combination of console game controller, gestural interaction sensors, etc.

[0025] This control device 21 sends coordinates (series of instructions) for cropping (select a portion of the digital image to be displayed) to a central unit.

[0026] Next, in the method in accordance with the present invention a correction step 3 wherein optical distortion is corrected to prevent distortions of the digital image when projected, for example, on the walls of a room.

[0027] This correction step 3 is performed using the data from the lens 31 through which the digital image will be projected and using software. It should be noted that the lens data are provided by the lens manufacturers themselves, as known to the persons skilled in the art.

[0028] The correction is performed by means of reverse deformation to correct the deformation generated by the physical lens 31.

[0029] In this manner, a corrected digital image is obtained optimised for the projection thereof in a real environment, for example, on the walls of a room.

[0030] It should be noted that the previously described steps are advantageously executed in real time.

[0031] If desired, the method in accordance with the invention may also comprise a step 41, 42 of correcting the digital image 1 in accordance with the space where said digital image is projected.

[0032] In this correction step, the digital image can be corrected 41 in accordance with the geometry of the space where the image is projected, for example, a room, which consists of adapting the digital image projected to the geometry of the projection space using a formatted depth image 43 of the space generated from a raw depth image 44.

[0033] Additionally, in the correction step the correction 42 of the digital image in accordance with the colorimetry of this space can also be performed, i.e. adapt the projected digital image to the colorimetry of the projection space using the colour image formatted 45 by said space from a raw colour image 46.

[0034] In this correction step, the geometric and chromatic description data of the projection space are firstly collected in order to perform the correction steps 41, 42 wherein real-time image processing is corrected.

[0035] It should be noted that this correction step 41, 42 is preferably performed in real time, although the collection of the necessary data (depth and colour images of the space) to perform this step is not performed in real time, but rather can be performed previously.

[0036] Depth and colour images can be obtained in any of the following manners: [0037] depth and colour cameras integrated in the display body; [0038] external cameras: display accessory for use by the technician or user; or [0039] any other technique that provides the same results: formatted depth image and colour image.

[0040] For example, colour and depth sensors integrated in the projection unit or external to the projection unit can be used.

[0041] In this case, raw data can be collected from the depth sensors and from the colour sensors, the raw data can be formatted to extract the relevant data and real-time data can be provided to the previously described steps of the method in accordance with the present invention.

[0042] Lastly, the corrected digital image 5, optimised for the projection space, is projected.

[0043] Despite the fact that reference has been made to a specific embodiment of the invention, it is evident for a person skilled in the art that the described method is susceptible of many variations and modifications, and that all the aforementioned details can be replaced by other, technically equivalent ones without detracting from the scope of protection defined by the attached claims.