Abstract: Techniques for Long Term Reference (LTR) frame updating in a video encoding process are performed by an image processing device as part of the video encoding process. The method comprises encoding a first LTR frame. The method comprises encoding a plurality of frames referencing directly or indirectly to the first LTR frame. The method comprises sequentially updating the first LTR frame by evaluating a cost for encoding a block of image data in one of the plurality of frames and by updating an image area in the first LTR frame when the cost fulfils a cost criterion. The image area is updated based on the block of image data in at least one of the plurality of frames. The method comprises encoding the sequentially updated first LTR frame as a second LTR frame.

Abstract: Techniques for Long Term Reference (LTR) frame updating in a video encoding process are performed by an image processing device as part of the video encoding process. The method comprises encoding a first LTR frame. The method comprises encoding a plurality of frames referencing directly or indirectly to the first LTR frame. The method comprises sequentially updating the first LTR frame by evaluating a cost for encoding a block of image data in one of the plurality of frames and by updating an image area in the first LTR frame when the cost fulfils a cost criterion. The image area is updated based on the block of image data in at least one of the plurality of frames. The method comprises encoding the sequentially updated first LTR frame as a second LTR frame.

Abstract: An anesthetic filter arrangement for the reflection of unused anesthetic agent in expiration gas back toward a patient has a filter housing having an interior portion arranged to provide an internal gas flow path for an inspiration gas and for an expiration gas passing alternately and in opposite directions through the housing and a filter element disposed in gas communication with the interior portion for adsorption of anesthetic agent from the expiration gas and subsequent desorption of the anesthetic agent into the inspiration gas. The arrangement further. has a thermal regulator operable to reduce thermal energy at the filter element by cooling one or both incoming gas and the filter element, and thereby vary one or both the adsorption and the desorption of the anesthetic agent.