1. A method for reducing noise in at least one frame in an image sequence, comprising:
applying a minimum function to said at least one frame to produce a plurality of minimum values;
generating a mask in accordance with said plurality of minimum values; and
applying said mask to reduce said noise in said at least one frame.
2. The method of claim 1, wherein said noise is impulse noise.
3. The method of claim 1, wherein said at least one frame is an image intensified television frame.
4. The method of claim 1, further comprising:
applying an opening process to said mask; and
applying a dilation process to said mask.
5. The method of claim 1, wherein said applying said mask, comprises:
computing motion estimation information between at least two frames of said image sequence; and
applying said motion estimation information to assist in applying said mask to reduce said noise.
6. The method of claim 1, further comprising:
reducing a wideband non-linear noise from said at least one frame.
7. The method of claim 6, where said reducing said wideband non-linear noise comprises:
decomposing said at least one frame into a plurality of subbands; and
using at least one look-up table to reduce small amplitude variations in at least one of said subbands.
8. A computer-readable medium having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to perform the steps of a method for reducing noise in at least one frame in an image sequence, comprising:
applying a minimum function to said at least one frame to produce a plurality of minimum values;
generating a mask in accordance with said plurality of minimum values; and
applying said mask to reduce said noise in said at least one frame.
9. An apparatus for reducing noise in at least one frame in an image sequence, comprising:
means for applying a minimum function to said at least one frame to produce a plurality of minimum values;
means for generating a mask in accordance with said plurality of minimum values; and
means for applying said mask to reduce said noise in said at least one frame.
10. A method for reducing noise in at least one frame in an image sequence, comprising:
decomposing said at least one frame into a plurality of subbands; and
using at least one look-up table to reduce small amplitude variations in at least one of said subbands.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A lamp comprising an envelope (1) of quartz glass surrounding the light source of the lamp, wherein an electric conductor (8) is at least partly embedded in the quartz glass material of the envelope (1), characterized in that at least a portion of the surface of said part of the conductor (8) is provided with protrusions (15) forming a brush-like structure at said surface.
2. A lamp as claimed in claim 1, characterized in that the protrusions (15) have an average length of between 10 \u03bcm and 35 \u03bcm, preferably between 15 \u03bcm and 25 \u03bcm.
3. A lamp as claimed in claim 1, characterized in that the material density in the brush-like structure (15) is between 20% and 80%, at which the brush-like structure (15) has a mechanical flexibility and deformation potential which is substantially higher than that of a solid structure of the same material.
4. A lamp as claimed in claim 1, characterized in that said portion of the surface of the conductor (8) is provided with recesses (14, 18), while said protrusions (15) are located at the edges of said recesses (14, 18) which are preferably one or more grooves (14) in the surface of said portion of the conductor (8).
5. A lamp as claimed in claim 1, characterized in that the brush-like structure (15) at the surface of the conductor (8) extends in a zone of less than 25 \u03bcm wide.
6. A lamp as claimed in 1, characterized in that said portion of the surface of the conductor (8) is treated by means of a laser beam by which material of the conductor (8) is locally detached and forms the protrusions (15) at the surface of the conductor (8).
7. A lamp as claimed in claim 1, characterized in that the material of the conductor (8) is tungsten or tungsten alloy or doped tungsten.
8. A lamp as claimed in claim 1, characterized in that the material of the conductor (8) is a metal other than tungsten from the group of refractory metals such as Mo, Ta, Re, In, in a pure, doped or alloyed quality.
9. A lamp as claimed in claim 1, characterized in that said conductor (8) is an electrode rod (8, 9) which is partly embedded in the quartz glass material of the envelope (1).
10. A lamp as claimed in claim 9, characterized in that said lamp is a high-pressure gas discharge lamp, wherein the electrode rod (8, 9) is embedded in the sealed portion (4, 5) of the quartz glass envelope (1).
11. A method of manufacturing a lamp comprising an envelope of quartz glass surrounding the light source of the lamp, wherein an electric conductor (8) is at least partly embedded in the quartz glass material of the envelope (1), characterized in that at least a portion of the surface of said part of the conductor (8) is treated by means of a laser beam by which material of the conductor (8) is locally detached and forms the protrusions (15) at the surface of the conductor (8).