Abstract: A method for inverse tone mapping includes obtaining a histogram of a low dynamic range image, called LDR image and obtaining an ITMO function, allowing obtaining a pixel value of a High Dynamic Range image, called HDR image, from a pixel value of the LDR image and a gain function depending on said pixel value of the LDR image. A search process is applied using the obtained histogram to identify areas of the LDR image producing bright areas in the HDR image when the ITMO function is applied on said LDR image. Information representative of the bright areas is used to determine when modifying the gain function to ensure the HDR image respects at least one predefined light energy constraint.

Abstract: A method comprising emulating (401) an implementation of a post-processing process of an SL-HDRx system before applying a pre-processing process of the SL-HDRx system using input color components of a current sample of a current picture up to a computation of at least one intermediate chroma component; determining (402, 404) that a value of the at least one intermediate chroma component is higher than a maximum chroma component value depending on a calculation precision set in the implementation of the post-processing process; applying (403, 405) a correction process on the input color components to obtain corrected color components for the current sample respecting at least a clipping prevention condition responsive to the value of the at least one intermediate chroma component is higher than the maximum chroma component value.

Abstract: A method for correcting a SDR video in a SL-HDR1 system comprising identifying samples of a SDR picture the chroma components values of which risking to be clipped during a SL-HDR1 process; and, correcting the identified samples to prevent from the clipping before a generation of a HDR picture from the SDR picture.

Abstract: A method for correcting a SDR video in a SL-HDR1 system comprising identifying samples of a SDR picture the chroma components values of which risking to be clipped during a SL-HDR1 process; and, correcting the identified samples to prevent from the clipping before a generation of a HDR picture from the SDR picture.

Abstract: A method comprising: obtaining an histogram of a current SDR picture, the histogram comprising bins, a bin associating a sample value to a number of occurrences of the sample value in the current SDR picture; determining a current state value representative of the current SDR picture from at least one most representative bin of the histogram, the most representative bin being the bin of the histogram representing the highest number of samples of the current SDR picture; identifying a profile in a set of a plurality of profiles corresponding to the determined current state value, each profile of the plurality being associated to an expansion function; and, applying an inverse tone mapping to the current SDR picture using the expansion function associated with the identified profile to obtain a HDR picture.

Abstract: The purpose of the invention is a method for activating a mobile device in a network comprising at least one display device being coupled to a sensor. This method is characterised by the fact that it comprises: detecting the mobile device via the sensor coupled to the display device; displaying a device representative of the detected mobile device, called a virtual device, on the display device such that the position of the virtual device on the display screen is linked to the position of the mobile device in the capture field of the sensor; activating the mobile device in the network when a determined action is applied by the user to the mobile device. Another purpose of the invention is a display device and a system implementing the method.

Abstract: A method comprising: obtaining (401) high dynamic range data; computing (402, 403) a first tone mapping curve from the high dynamic range data corresponding to low high dynamic range values of a combined tone mapping curve, the first tone mapping curve ending by a point, called first point, with an abscissa representative of a high dynamic range diffuse white and an ordinate representative of a standard dynamic range diffuse white, the combined tone mapping curve allowing obtaining standard dynamic range data from the high dynamic range data; and completing (404) the combined tone mapping curve with a second tone mapping curve for high standard dynamic range starting from the first point.

Abstract: A method comprising modifying a color correction function intended to correct initial chroma components of a current image to obtain normalized corrected chroma components for avoiding the clipping of the initial chroma components while maintaining saturation and preserving hue.

Abstract: The purpose of the invention is a method for activating a mobile device in a network comprising at least one display device being coupled to a sensor. This method is characterised by the fact that it comprises: detecting the mobile device via the sensor coupled to the display device; displaying a device representative of the detected mobile device, called a virtual device, on the display device such that the position of the virtual device on the display screen is linked to the position of the mobile device in the capture field of the sensor; activating the mobile device in the network when a determined action is applied by the user to the mobile device. Another purpose of the invention is a display device and a system implementing the method.

Abstract: A method for inverse tone mapping by obtaining a gain function, called initial gain function, of a first inverse tone mapping function; if an analysis of a current image shows that at least a pixel of the current image with a luminance value at least equal to a luminance value depending of a predetermined percentage of the pixels of the current image have an expanded luminance value resulting from an application of the first ITM function to the current image higher than a target value, applying a second ITM function to the current image, the second ITM function corresponding to the first inverse tone mapping function in which the gain function has been replaced by a modified gain function derived from the initial gain function in which a gain provided by the initial gain function is attenuated by an attenuation function, said attenuation function being weighted by a weighting factor controlling a strength of the attenuation, the weighting factor depending on a statistical distribution of luminance values in a

Abstract: A method for activating a mobile device in a network is disclosed wherein the network further comprises at least one display device coupled to a sensor. This method comprises: detecting the mobile device via the sensor coupled to the display device; displaying a virtual device representative of the detected mobile device on the display device such that the position of the virtual device on the display device is linked to the position of the mobile device in the capture field of the sensor; activating the mobile device in the network when a determined action is applied by the user to the mobile device. A display device and a system implementing the method are further disclosed.

Abstract: A method for inverse tone mapping includes obtaining a histogram of a low dynamic range image, called LDR image and obtaining an ITMO function, allowing obtaining a pixel value of a High Dynamic Range image, called HDR image, from a pixel value of the LDR image and a gain function depending on said pixel value of the LDR image. A search process is applied using the obtained histogram to identify areas of the LDR image producing bright areas in the HDR image when the ITMO function is applied on said LDR image. Information representative of the bright areas is used to determine when modifying the gain function to ensure the HDR image respects at least one predefined light energy constraint.

Abstract: The invention concerns a device (D) for assigning time information to a main multimedia content related to a given object. To this end, said device comprises: a clustering module (4) configured to cluster a set of auxiliary multimedia contents with time information and related to said object, so as to deliver clusters comprising some of said auxiliary multimedia contents; a determining module (5) configured to determine a time data for each cluster; a computing module (6) configured to compute a distance between the main multimedia content and each of said clusters, an assigning module (7) configured to assign to the main multimedia content, the time data of the cluster having the smallest distance said amongst computed distances.

Abstract: A method for activating a mobile device in a network is disclosed wherein the network further comprises at least one display device coupled to a sensor. This method comprises: detecting the mobile device via the sensor coupled to the display device; displaying a virtual device representative of the detected mobile device on the display device such that the position of the virtual device on the display device is linked to the position of the mobile device in the capture field of the sensor; activating the mobile device in the network when a determined action is applied by the user to the mobile device. A display device and a system implementing the method are further disclosed.

Abstract: The invention concerns a device (D) for assigning time information to a main multimedia content related to a given object. To this end, said device comprises: a clustering module (4) configured to cluster a set of auxiliary multimedia contents with time information and related to said object, so as to deliver clusters comprising some of said auxiliary multimedia contents; a determining module (5) configured to determine a time data for each cluster; a computing module (6) configured to compute a distance between the main multimedia content and each of said clusters, an assigning module (7) configured to assign to the main multimedia content, the time data of the cluster having the smallest distance said amongst computed distances.

Abstract: The present invention relates to a data transfer method of a delegating processor (200), requiring the execution of functions, to a delegate processor (202), that executes these functions based on a function identifier and execution parameters associated with this function, this identifier and these parameters being provided by the delegating processor (200), characterized in that the delegating processor (200) accesses a bank of internal registers (216) of the delegate processor (202) to store in these registers the parameters associated with a function to be executed simultaneously to the execution by the delegate processor of another function.