Temporally stable occlusion free caption rendering position in Z-plane for stereoscopic video

A non-transitory computer-readable storage medium having stored thereon computer executable instructions, which when executed by a computing device, cause the computing device to be operable for:

• determining a disparity value from a plurality of disparity values in a current frame of a stereoscopic video, wherein the disparity value is based on a difference of a value for a pixel between a first video and a second video of the stereoscopic video;
• determining a location in a current frame that includes the disparity value;
• analyzing one or more first frames prior to the current frame to adjust disparity values in the one or more first frames to generate one or more adjusted first disparity values, wherein analyzing one or more first frames prior to the current frame comprises:
• determining a first frame;
• determining whether a disparity value for the first frame is less than a disparity value for the current frame, wherein less than indicates closer to a viewer of the stereoscopic video;
• when the disparity value for the first frame is not less than the disparity value for the current frame, determining whether the disparity value for the first frame is greater than the disparity value for the current frame and a difference value, wherein greater than indicates farther away from the viewer of the stereoscopic video;
• adjusting the disparity value for the first frame to an adjusted first disparity value that is equal to or less than the disparity value and the difference value;
• determining another first frame that is previous to the first frame that was determined;
• and
• analyzing a disparity value of the another first frame and the adjusted first disparity value of the first frame to determine whether to adjust the disparity value of the another first frame to generate an adjusted first disparity value for the another first frame;
• analyzing one or more second frames after the current frame to adjust disparity values in the one or more second frames to generate one or more adjusted second disparity values;
• and
• outputting the one or more adjusted first disparity values and the one or more adjusted second disparity values for use in displaying captions in the first video or the second video.

An apparatus comprising:

• one or more computer processors;
• and
• a computer-readable storage medium comprising instructions for controlling the one or more computer processors to be operable for:
• determining a disparity value from a plurality of disparity values in a current frame of a stereoscopic video, wherein the disparity value is based on a difference of a value for a pixel between a first video and a second video of the stereoscopic video;
• determining a location in a current frame that includes the disparity value;
• analyzing one or more first frames prior to the current frame to adjust disparity values in the one or more first frames to generate one or more adjusted first disparity values, wherein analyzing one or more first frames prior to the current frame comprises:
• determining a first frame;
• determining whether a disparity value for the first frame is less than a disparity value for the current frame, wherein less than indicates closer to a viewer of the stereoscopic video;
• when the disparity value for the first frame is not less than the disparity value for the current frame, determining whether the disparity value for the first frame is greater than the disparity value for the current frame and a difference value, wherein greater than indicates farther away from the viewer of the stereoscopic video;
• adjusting the disparity value for the first frame to an adjusted first disparity value that is equal to or less than the disparity value and the difference value;
• determining another first frame that is previous to the first frame that was determined;
• and
• analyzing a disparity value of the another first frame and the adjusted first disparity value of the first frame to determine whether to adjust the disparity value of the another first frame to generate an adjusted first disparity value for the another first frame;
• analyzing one or more second frames after the current frame to adjust disparity values in the one or more second frames to generate one or more adjusted second disparity values;
• and
• outputting the one or more adjusted first disparity values and the one or more adjusted second disparity values for use in displaying captions in the first video or the second video.