GB2385482A - Interleaving images from plural sources - Google Patents
Interleaving images from plural sources Download PDFInfo
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- GB2385482A GB2385482A GB0227586A GB0227586A GB2385482A GB 2385482 A GB2385482 A GB 2385482A GB 0227586 A GB0227586 A GB 0227586A GB 0227586 A GB0227586 A GB 0227586A GB 2385482 A GB2385482 A GB 2385482A
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- picture elements
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- control signal
- radiation
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- 230000005855 radiation Effects 0.000 claims abstract description 66
- 230000000007 visual effect Effects 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims description 43
- 238000012545 processing Methods 0.000 claims description 30
- 238000009826 distribution Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 25
- 239000011824 nuclear material Substances 0.000 description 5
- 238000011835 investigation Methods 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010420 art technique Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Optics & Photonics (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- High Energy & Nuclear Physics (AREA)
- Signal Processing (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Multimedia (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of Radiation (AREA)
Abstract
Images information from two or more sources are interleaved for display on distinct sets of individually controllable picture elements in a display, wherein one of the sources comprises a visual imager and another comprises a radiation detector, such as a collimated gamma emission detector. Preferably 50% of the elements of one set are at most 3 picture elements away from an element of the other set. The sources are preferably at substantially the same viewpoint. The sets of picture elements may be arranged in rows or columns, or as a checkerboard. The interleaved images allow display of radiation information alongside visual information such that the latter is not obscured by the radiation image.
Description
<Desc/Clms Page number 1>
IMPROVEMENTS IN AND RELATING TO IMAGING OF RADIATION
This invention concerns improvements in and relating to the imaging of radiation and particularly, but not exclusively, to the display of radiometric images and optical images simultaneously.
A variety of techniques require the display of images relating to radiation levels, energies or source types or species. It is useful to be able to relate this information to optical images of the area viewed in the radiometric image. The applicant's existing systems do this by overlaying the radiometric image on the optical image. The problem with this technique is that the optical information is completely obscured as a result where radiometric information is displayed. If a large area is covered then this may make relating the radiometric and optical images in that area impossible or at least inaccurate. In an alternative form the radiometric image information and optical image information for pixels in the final image are combined, but the optical image is impaired and high contrast levels are difficult to accommodate successfully.
The present invention has amongst its aims to provide an improved system for displaying radiometric and optical images. The present invention has amongst its aims to provide improved radiometric and optical imaging equipment and/or methods.
According to a first aspect of the invention we provide a method of displaying information about a source of radiation in combination with visual information about the location of the source of radiation, the method including: forming a display including a plurality of individually controllable picture elements, the elements being provided in an array; obtaining information from one or more radiation detectors; processing the radiometric information to produce a first control signal set; obtaining information from a visual imager, processing the visual information to produce a second control signal set; the first control signal set being used to control the information displayed by a first set of picture elements, the second control set being used to control the information displayed by a second set of picture elements, picture elements from the first set of picture elements being intermixed with picture elements from the second set of picture elements.
<Desc/Clms Page number 2>
Preferably at least 50% of the picture elements of the first set of picture elements are at most three picture elements away from a picture element from the second set of picture elements.
According to a second aspect of the invention we provide a method of displaying information about a source of radiation in combination with visual information about the location of the source of radiation, the method including: forming a display including a plurality of individually controllable picture elements, the elements being provided in an array; obtaining information from one or more radiation detectors; processing the radiometric information to produce a first control signal set; obtaining information from a visual imager; processing the visual information to produce a second control signal set; the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, at least 50% of the picture elements of the first set of picture elements being at most three picture elements away from a picture element from the second set of picture elements.
Preferably the picture elements from the first set of picture elements are intermixed with picture elements from the second set of picture elements.
According to a third aspect of the invention we provide a method of controlling an action involving one or more sources of radiation, the method including displaying information about a source of radiation in combination with visual information about the location of the source of radiation, the method including: forming a display including a plurality of individually controllable picture elements, the elements being provided in an array; obtaining information from one or more radiation detectors; processing the radiometric information to produce a first control signal set; obtaining information from a visual imager; processing the visual information to produce a second control signal set;
<Desc/Clms Page number 3>
the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, picture elements from the first set of picture elements being intermixed with picture elements from the second set of picture elements, the information display being considered and the information display being used in controlling a subsequent action.
Preferably at least 50% of the picture elements of the first set of picture elements are at most three picture elements away from a picture element from the second set of picture elements.
According to a fourth aspect of the invention we provide a method of controlling an action involving one or more sources of radiation, the method including displaying information about a source of radiation in combination with visual information about the location of the source of radiation, the method including; forming a display including a plurality of individually controllable picture elements, the elements being provided in an array; obtaining information from one or more radiation detectors; processing the radiometric information to produce a first control signal set; obtaining information from a visual imager; processing the visual information to produce a second control signal set; the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, at least 50% of the picture elements of the first set of picture elements being at most three picture elements away from a picture element from the second set of picture elements, the information display being considered and the information display being used in controlling a subsequent action.
Preferably picture elements from the first set of picture elements are intermixed with picture elements from the second set of picture elements.
<Desc/Clms Page number 4>
The first and/or second and/or third and/or fourth aspects of the invention may include any of the features, options or possibilities set out elsewhere in this document, including the following.
The source of radiation may be a piece of nuclear fuel, a piece of irradiated nuclear fuel, a component from the reprocessing of nuclear fuel. The source of radiation
may be an item, location or surface contaminated with a radioactive species. The source of 0 t A u I t"%. Lxoa, +Live spe-L radiation may have arisen during the production of nuclear materials, the refining of nuclear materials, the assembly of nuclear materials, the storage of nuclear materials, the disposal of nuclear materials. The source of radiation may be liquid, but is more usually solid.
The information on the source of radiation may be gathered by one or more radiation detectors. The detectors may be sensitive to gamma and/or beta and/or alpha emissions and/or neutrons. The detectors may be collimated or otherwise shielded to define a field of view from which information on the source of radiation is gathered.
The visual information may be a still image. The visual information may be a still image taken from a series of video images. The visual information may be a series of video images. The visual information may be a composite or processed form of more than one image. The visual information may relate to the whole of an environment under consideration, but more usually relates to a view of that environment or a part thereof. The environment may be a room, cell, glove box, tank or the like. The visual information may relate to a field of view of the environment. The field of view may correspond to a field of view of an instrument collecting the information on the source of radiation, but preferably the field of view for the visual information is greater.
It is preferred that the radiometric information and the visual information or gathered from substantially the same location and/or from substantially the same viewpoint.
The display may be a television screen, monitor or other tube based display. The display may be based on light emitting diodes or other display routes.
The individually controllable picture elements may be pixels. The picture elements are preferably capable of displaying varying levels of light. The picture elements are preferably capable of displaying varying colours and/or intensities of colour. The picture elements are preferably capable of displaying varying levels of contrast. The
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individually controllable picture elements may be the smallest element which is individually controllable in the display. The individually controllable picture elements may be composed of more than one picture element. The individually controlled picture elements may be composed of a regular array of more than one picture element. In particular a pair of picture elements and/or a 2 by 2 array and/or a 3 by 3 array and/or a 4 by 4 array of picture elements may form the individually controllable picture elements.
The array may be formed of a plurality of columns of picture elements. The array may be formed of a plurality of rows of picture elements. Picture elements in a column may be provided alongside picture elements in an adjoining column to one or both sides.
Picture elements in a row may be provided above and/or below picture elements in an adjoining row. Picture elements may be offset between one column and the next and/or between one row and the next. The array may include at least 200 picture elements, more preferably at least 1000 and ideally more than 2000.
The method may obtain information from one or more of the radiation detectors by means of signals generated by a detectable event in and/or at the detector. The signal may indicate the time and/or energy of the event and/or location of the emission causing the event. The location may be derived from the pan and/or tilt angle of the radiation detector or a unit on which the radiation detector is provided. The location may be further defined by a distance. The distance may be measured by a rangefinder, ideally provided on the same unit as the radiation detector.
The processing of the information from the one or more radiation detectors may provide information on the time of the event and/or energy of the event and/or location of the emission causing the event. Information from two or more events may be combined and/or considered together to give further information. The further information may include the level of emissions and/or the species causing the emissions and/or the type of emissions and/or the rate of emissions.
The first control signal set preferably includes a plurality of signals and more preferably a separate signal for each picture element in the first set of picture elements.
The one or more signals of the first control signal set may include information on the brightness and/or contrast and/or colour and/or colour intensity to be displayed by a picture element and ideally such information for all picture elements in the first set.
<Desc/Clms Page number 6>
The processing of the information from the visual imager may provide information on the brightness and/or contrast and/or colour of the visual image. The processing may include the conversion of a colour image to a black and white image. The processing may manipulate the contrast and. /or brightness of the visual image and/or one or more parts thereof.
The second control signal set preferably includes a plurality of signals and more irjl, i %, #, L I I AUL & 1 11 x I I preferably a separate signal for each picture element in the second set of picture elements.
The one or more signals of the second control signal set may include information on the brightness and/or contrast and/or colour and/or colour intensity to be displayed by a picture element and ideally such information for all picture elements in the second set.
Preferably at least 90% of the picture elements in the array, ideally all, are either in the first or second picture element sets. Preferably the first set of picture elements forms between 40% and 60% of the picture elements in the array. Preferably the second set of picture elements forms between 40% and 60% of the picture elements in the array.
The method may display a third set of information or even further sets. Preferably the third and/or further sets of information are processed to form a third control signal set and/or further control signal sets, the control signal sets including one or more control signals, control signals from the sets being used to control a respective third and/or further sets of picture elements. Preferably the third and/or further picture sets are provided intermixed and/or within 3 picture elements of a picture element from another picture set in at least 50% of cases. Where three or more sets of information are displayed preferably the sets are within 10% of each other in terms of the number of picture elements making up the set.
The first set of picture elements may be intermixed with one another by randomly selecting whether a picture element is placed in the first or second set. More preferably the picture elements are placed in the first or second set to provide an even distribution of picture elements from the two sets across the array.
The picture elements of one row may particularly be in a different set to the picture elements of one or both adjoining rows. The picture elements of one column may particularly be in a different set to the picture elements of one or both adjoining columns.
Preferably alternating rows of picture elements belong to alternate sets of picture elements.
Preferably alternating columns of picture elements belong to alternate sets of picture
<Desc/Clms Page number 7>
elements. It is particularly preferred that alternate picture elements in a row of the array are placed in alternate picture element sets and ideally that alternate picture elements in one or both adjoining rows of the array are placed in alternate picture element sets, the picture elements in above and/or below a picture element in the row being from the alternate set of picture elements. It is particularly preferred that alternate picture elements in a column of the array are placed in alternate picture element sets and ideally that alternate picture elements in one or both adjoining columns of the array are placed in alternate picture element sets, the picture elements to the left and/or right a picture element in the column being from the alternate set of picture elements. A checkerboard appearance for the picture elements belonging to the two sets is preferred.
The percentage of picture elements in the first set being at most three picture elements away from a picture element from the second set of picture elements is preferably at least 70%, more preferably at least 90% and ideally 100%. Preferably equivalent proportions of the picture elements of the second set are provided at most three picture elements away from a picture element of the first set. Preferably the separation is at most two picture elements, more preferably the separation is at most one picture element for these possible proportions of first and/or second picture elements.
The first and/or second aspects of the invention, but particularly the third and fourth aspects of the invention may provide the following possibilities and features.
The method of controlling an action may involve the collection of information, its consideration and a decision making process based on the information. The decision may be to follow a certain course of action, not to follow a certain course of action, to undertake further investigation, to undertake more detailed investigation.
The control may be which option is selected from amongst a variety of options.
The subsequent action may be the selection of a decontamination process or technique. The subsequent action may be the removal of a part of the location and/or an item from the remainder of the location and/or other items. The removed component may be subjected to different processing and/or storage than the remainder.
According to a fifth aspect of the invention we provide apparatus for displaying information about a source of radiation in combination with visual information about the
<Desc/Clms Page number 8>
location of the source of radiation, the apparatus including a display unit and a processor unit, the processor unit being adapted in use to receive information from one or more radiation detectors and being adapted in use to receive information from one or more visual imagers, the processing unit processing the information from one or more of the radiation detectors to produce a first control signal set, the processing unit processing the information from one or more of the visual imagers to produce a second control signal set, the display unit including a plurality of individually controllable picture elements, the elements being provided in an array, the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, and wherein picture elements from the first set of picture elements are intermixed with picture elements from the second set of picture elements and/or at least 50% of the picture elements of the first set of picture elements being at most three picture elements away from a picture element from the second set of picture elements.
The fifth aspect of the invention may include any of the features, options or possibilities set out elsewhere in this document, including the following.
According to a sixth aspect of the invention we provide a method of displaying information from a plurality of sources in combination, the display including a plurality of individually controllable picture elements, the elements being provided in an array, the method including obtaining information from a first source, processing the information to produce a first control signal set, obtaining information from a second source, processing the information to produce a second control signal set, the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, picture elements from the first set of picture elements being intermixed with picture elements from the second set of picture elements.
According to a seventh aspect of the invention we provide a method of displaying information from a plurality of sources in combination, the display including a plurality of individually controllable picture elements, the elements being provided in an array, the
<Desc/Clms Page number 9>
method including obtaining information from a first source, processing the information to produce a first control signal set, obtaining information from a second source, processing the information to produce a second control signal set, the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, at least 50% of the picture elements of the first set of picture elements being at most three picture elements away from a picture element from the second set of picture elements.
The sixth and/or seventh aspects of the invention may include any of the features, options or possibilities set out elsewhere in this document.
Various embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which :-
Figure 1 illustrates an image displayed according to a prior art technique;
Figure 2 illustrates an image displayed according to a first embodiment of the present invention;
Figure 3 illustrates an image displayed according to another embodiment of the present invention; and
Figure 4 illustrates an image displayed according to a still further embodiment of the present invention.
Situations, such as the investigation of contaminated locations within a room, call for information on radiation sources to be displayed. It is particularly useful if this radiometric information can be matched to an optical image to inform a user of the physical location of the contamination. The radiometric information could be of one or more types.
For instance, information on the level of emission, the energy of the emission, the species causing the emission and the type of emission are all useful sets of information.
The optical image could be a still image, but is more usually a frame from a video image.
Overlaying the radiation image on the video image causes problems. As shown in Figure I an optical image of a room 2 provides information on the room and its contents,
<Desc/Clms Page number 10>
such as table 4 and box 6. The radiation image overlain on the optical image provides information that the emissions level from zone 8 is higher than zones 10 and still higher than zone 12. However, the radiation image obscures the optical image in zones 8,10 and 12 and so the viewer cannot directly tie the radiation information to optical information, i. e. which item is contaminated. Removing the radiation image and using the operator's memory to recall the position of zones 8, 10 and 12 is not accurate and may not indicate clearly whether the contamination is from a spanner or box within those general zones.
Attempts to combine the optical information in a pixel with the radiation image information for a pixel have been performed by the applicant. However, the amount of information which can be provided in a pixel is limited and this has a significant impact on the ability of the pixel to convey information about both images. A particular problem lies in being able to represent high contrast optical images clearly.
The present invention aims to address these problems by representing the radiation and optical images in a completely different way.
As illustrated in Figure 2 the present invention obtains information on radiation according to any of a large number of techniques, including collimated gamma emission detectors 2. The optical image can also be obtained via a variety of options, including still cameras, video cameras 4 or still images taken from video. The signals are processed using a processor 6 and the resulting images are displayed on a screen 8, with the image being made up of a large number of rows 10 and columns 12 of pixels 14. Rather than combining the signals to give the information displayed by a given pixel, different pixels are used to display the different images. Thus first column 12a is formed of pixels 14a which display the optical image. The second column 12b is formed of pixels 14b which display the radiation image. Alternate columns are then used to display optical image information and radiation image information, progressing across the screen 8. The result is around half of the columns 14 provide one set of information and the other half provide the other set of information. The human eye receives enough information from each image type to be able to accurately interpret each of the result sets and also to be able to accurately interpret how they link together. Thus the optical image still provides enough information to view objects, the room layout etc and the radiation image still provides a strong indicator of levels of emission, for example, from the various positions. As each
<Desc/Clms Page number 11>
pixel is fully available to convey information on its image type a wider range of contrast and colours can be accommodated.
In an improved form, which eliminates the stripy overall screen appearance which applies to the above embodiment, the invention is provided as illustrated in Figure 3. In this case the screen 30 which displays the image is again formed of a series of columns 32 and rows 34 of pixels 36. Starting in one comer of the screen, the comer pixel 38 is used to indicate information on the optical image alone. The adjoining pixel 40 in the same row 34a is used to indicate information on the radiation image alone. The pixels in that row then alternate in the information they supply as progress is made from left to right. In the next row down 34b, the first pixel 42 is used to indicate the radiation image and the adjoining pixel is used to indicate the optical image. Over and again alternating indications of the image type are made as progress is made across the row. The next row 34c is a repeat of the first and alternating row form occurs as progress is made down the screen 30.
The overall result is a checkerboard appearance.
Variations on these themes are of course possible with different pixels being used for different image types alone. In Figure 4 a form is illustrated in which the first three pixels 50 of the top row 52 of the screen 54 and the first three pixels 56 of the second row 58 and first three pixels 60 of the third row 62 are used for the optical image. The next three by three pixel block 64 is used for the radiation image and so on.
The signal processor performs different functions depending on the form of radiation being considered. In the case of a collimated gamma detector, the scintillator provides an indication of the arrival of a gamma ray from within the collimated field of view and of the energy of that emission. That information is combined with the information on the field of view under consideration, which is derived from the tilt and pan position of the arrangement used to direct the collimator. The radiation image is generated as a result and then representative information is sent to the pixels representing the image which are in use for the radiation imaged. The optical image signals are subjected to any necessary processing and then used as the feed for the remaining pixels.
Claims (17)
- CLAIMS: 1. A method of controlling an action involving one or more sources of radiation, the method including displaying information about a source of radiation in combination with visual information about the location of the source of radiation, the method including:I inui id-aa'll LiUllaUIC pi%, LUre forming a display including a plurality of individually controllable picture elements, the elements being provided in an array; obtaining information from one or more radiation detectors; processing the radiometric information to produce a first control signal set; obtaining information from a visual imager; processing the visual information to produce a second control signal set ; the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, picture elements from the first set of picture elements being intermixed with picture elements from the second set of picture elements, the information display being considered and the information display being used in controlling a subsequent action.
- 2. A method according to claim 1 in which at least 50% of the picture elements of the first set of picture elements are at most three picture elements away from a picture element from the second set of picture elements.
- 3. A method of displaying information about a source of radiation in combination with visual information about the location of the source of radiation, the method including: forming a display including a plurality of individually controllable picture elements, the elements being provided in an array; obtaining information from one or more radiation detectors; processing the radiometric information to produce a first control signal set; obtaining information from a visual imager, processing the visual information to produce a second control signal set; the first control signal set being used to control the information displayed by a first set of picture elements, the second control set being used to control the information<Desc/Clms Page number 13>displayed by a second set of picture elements, picture elements from the first set of picture elements being intermixed with picture elements from the second set of picture elements.
- 4. A method according to claim 3 in which at least 50% of the picture elements of the first set of picture elements are at most three picture elements away from a picture element from the second set of picture elements.
- 5. A method according to any preceding claim in which the radiometric information and the visual information are gathered from substantially the same viewpoint.
- 6. A method according to any preceding claim in which the individually controllable picture elements are pixels.
- 7. A method according to any of claims I to 5 in which the individually controllable picture elements are composed of more than one picture element.
- 8. A method according to any preceding claim in which the array is formed of a plurality of columns of picture elements and a plurality of rows of picture elements.
- 9. A method according to any preceding claim in which the one or more signals of the first control signal set include information on the brightness and/or contrast and/or colour and/or colour intensity to be displayed by a picture element.
- 10. A method according to any preceding claim in which the one or more signals of the second control signal set include information on the brightness and/or contrast and/or colour and/or colour intensity to be displayed by a picture element.
- 11. A method according to any preceding claim in which the first set of picture elements forms between 40% and 60% of the picture elements in the array and the second set of picture elements forms between 40% and 60% of the picture elements in the array.
- 12. A method according to any preceding claim in which the method displays at least<Desc/Clms Page number 14>a third set of information.
- 13. A method according to any preceding claim in which the picture elements are placed in the first or second set to provide an even distribution of picture elements from the two sets across the array.
- 14. A method according to any preceding claim in which the picture elements of one row are in a different set to the picture elements of one or both adjoining rows.
- 15. A method according to any of claims 1 to 13 in which alternate picture elements in a row of the array are placed in alternate picture element sets.
- 16. A method according to claim 15 in which alternate picture elements in one or both adjoining rows of the array are placed in alternate picture element sets, the picture elements above and/or below a picture element in the row being from the alternate set of picture elements.
- 17. Apparatus for displaying information about a source of radiation in combination with visual information about the location of the source of radiation, the apparatus including a display unit and a processor unit, the processor unit being adapted in use to receive information from one or more radiation detectors and being adapted in use to receive information from one or more visual imagers, the processing unit processing the information from one or more of the radiation detectors to produce a first control signal set, the processing unit processing the information from one or more of the visual imagers to produce a second control signal set, the display unit including a plurality of individually controllable picture elements, the elements being provided in an array, the first control signal set being used to control the information displayed by a first set of picture elements, the second control signal set being used to control the information displayed by a second set of picture elements, and wherein picture elements from the first set of picture elements are intermixed with picture elements from the second set of picture elements and/or at least 50% of the picture elements of the first set of picture elements being at most three picture elements away from a picture element from the second set of picture elements.<Desc/Clms Page number 15>50% of the picture elements of the first set of picture elements being at most three picture elements away from a picture element from the second set of picture elements.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0128352.2A GB0128352D0 (en) | 2001-11-27 | 2001-11-27 | Improvements in and relating to imaging of radiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0227586D0 GB0227586D0 (en) | 2002-12-31 |
| GB2385482A true GB2385482A (en) | 2003-08-20 |
Family
ID=9926507
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0128352.2A Ceased GB0128352D0 (en) | 2001-11-27 | 2001-11-27 | Improvements in and relating to imaging of radiation |
| GB0227586A Withdrawn GB2385482A (en) | 2001-11-27 | 2002-11-27 | Interleaving images from plural sources |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0128352.2A Ceased GB0128352D0 (en) | 2001-11-27 | 2001-11-27 | Improvements in and relating to imaging of radiation |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB0128352D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7460639B2 (en) | 2004-09-30 | 2008-12-02 | S.C. Mb Telecom Ltd.-S.R.L. | Nonintrusive inspection method and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954883A (en) * | 1986-04-14 | 1990-09-04 | Corporate Communications Consultants, Inc. | Interweave picture comparison apparatus and method |
-
2001
- 2001-11-27 GB GBGB0128352.2A patent/GB0128352D0/en not_active Ceased
-
2002
- 2002-11-27 GB GB0227586A patent/GB2385482A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4954883A (en) * | 1986-04-14 | 1990-09-04 | Corporate Communications Consultants, Inc. | Interweave picture comparison apparatus and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7460639B2 (en) | 2004-09-30 | 2008-12-02 | S.C. Mb Telecom Ltd.-S.R.L. | Nonintrusive inspection method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0227586D0 (en) | 2002-12-31 |
| GB0128352D0 (en) | 2002-01-16 |
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