fig1 shows a portable green screen 10 for providing a monochromatic color background for video recording , to enable subsequent pixel substitution such as by chroma key compositing . the green screen 10 may be used with the video production procedures which are set forth in ser . no . 13 / 103 , 821 , filed may 9 , 2011 , and in ser . no . 61 / 523 , 781 , filed aug . 15 , 2011 , which are hereby explicitly incorporated by reference as though each were fully set forth . the green screen 10 comprises an open skeleton frame which comprises a plurality of manually joined and separated bendable tubular press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 and three base members 26 , 28 , 30 . the press fit linear members may be assembled to define a three dimensional enclosed space having a rear zone , a right side zone , a left side zone , a floor zone , a ceiling zone , and an open front end . the three base members 26 , 28 , 30 are disposed to lie on a floor surface , with each base member 26 , 28 , or 30 may be arranged at right angles to adjacent base members 26 , 28 , 30 , thereby forming three sides of a rectangle . the base member 30 is not visible in fig1 , being concealed behind a flexible web 32 supported on the skeleton frame at the rear zone . it should be noted at this point that orientational terms such as left , right , front , and rear refer to the subject drawing as viewed by an observer ( not shown ) who could for example be located behind a video camera 2 , looking into the enclosed space within the skeleton frame . the drawing figures depict their subject matter in orientations of normal use , which could obviously change with changes in position of the green screen 10 or its component parts . therefore , orientational terms must be understood to provide semantic basis for purposes of description , and do not limit the invention or its component parts in any particular way . in fig5 , the base members 26 , 28 , 30 are seen isolated from the press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 , and at right angles to one another . the base members 26 , 28 , 30 may comprise internal metal or polymeric tubes ( not visible ) covered by cushions 26 a , 28 a , 30 a , which are colored with a keying color which is consistent with computerized pixel substitution . the base members 26 , 28 may have sockets 60 , 62 , 64 , 66 into which the vertical linear members 12 , 14 , 16 , 18 are inserted . as an alternative to the sockets 60 , 62 , 64 , 66 , the base members 26 , 28 could be provided with stub connectors such as the stub connector 58 of fig4 . continuing with description of the skeleton frame , there are four vertical linear members 12 , 14 , 16 , 18 each anchored at one end of one of the base members 26 , 28 , 30 , and four linear members 20 , 22 , 24 , 26 adapted to occupy a horizontal plane when the open skeleton frame is assembled and to define a ceiling zone . each one of the four linear members 20 , 22 , 24 , 26 has opposed ends each supported at one of the vertical linear members 12 , 14 , 16 , 18 . the press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 may be bendable or flexible tubes , made from metal or from a polymeric material . the press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 interfit telescopically to one another , and may be manually press fit into place . a plurality of stub connectors which are dimensioned and configured to couple telescopically to the press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 may be provided . illustratively , and turning momentarily to fig2 , stub connectors 34 , 36 , 38 are formed integrally with the vertical press fit linear member 12 and project therefrom at a right angle to the longitudinal axis of the press fit linear member 12 . the stub connectors 34 , 36 , 38 are of exterior diameter slightly less than the interior diameters of the press fit linear members 22 and 24 . other stub connectors 40 , 42 , 44 , 46 , 48 , 50 , 52 , 54 may be similar in structure and function to the stub connectors 34 , 36 , 38 . referring to fig3 and 4 , it would be possible to form stub connectors separately from their associated press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 . for example , a green screen according to the present invention may utilize three - branch stub connectors such as the stub connector 56 and two - branch stub connectors such as the stub connector 58 . the skeleton frame supports a plurality of flexible webs or socks 32 , 70 , 72 all of which are colored in a keying color to permit pixel substitution . exemplary keying colors include strong , bright pure green and strong , bright pure blue , where these colors are essentially similar to the blue and green colors which would be seen when dividing rays of natural sunlight by a prism and projecting the divided rays onto a white screen , for example . these colors contrast strongly with natural skin colors , thereby minimizing the possibility that the pixel substitution process will mistakenly delete part of the skin of the announcer and substitute background pixels therefor . also , these strong colors are unique and distinctive , and the webs are readily recognizable as special purpose and members of a related set of webs , and are unlikely to be mistaken for other devices such as tents . the webs 32 , 70 , 72 have edges which are carefully mounted so as to fully cover the skeleton frame from frontal view , such as that originating at the video camera 2 and facing the open front end of the green screen 10 , to assure appropriate color covering and successful pixel substitution . all of the webs 32 , 70 , 72 are similarly colored in the keying color . the webs 32 , 70 , 72 comprise mounting apparatus for engaging the open skeleton frame such that the open skeleton frame is fully covered and is entirely concealed from frontal view . the mounting apparatus is provided wherever one of the flexible webs 32 , 70 , 72 contacts a press fit linear member 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 of the open frame skeleton along one edge of the flexible web 32 , 70 , or 72 . fig7 shows one form of mounting apparatus for retaining the web 32 to a linear member 12 , 14 , 16 , 18 , 20 , 22 , 24 , or 26 . the web may have a closed hem 74 extending along its edge to receive insertion of the linear member 12 , 14 , 16 , 18 , 20 , 22 , 24 , or 26 . of course , the webs 70 and 72 may be similar . fig8 shows another form of mounting apparatus for retaining the web 70 to a linear member 12 , 14 , 16 , 18 , 20 , 22 , 24 , or 26 . the web 70 may have several strips 76 , 78 each bearing respective patches 80 , 82 of hook and loop fastener . the strips 76 , 78 may mate with corresponding patches 84 , 86 of hook and loop fastener affixed to the main panel of the web 70 . as seen in fig1 , a lighting module 88 , may be coupled to the skeleton frame of the green screen 10 . referring to fig9 , the lighting module 88 may comprise an illumination source such as an led 96 , a battery 98 connected to the led 96 , and a switch ( represented by a switch operator such as a pushbutton 100 ). although not shown , circuitry 102 will be understood to extend to the switch such that the switch can be used to turn the led 96 on and off . the lighting module 88 may include a housing 104 which on its exterior is colored in the keying color , and at least one grip 106 for engaging one of the press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 of the open skeleton frame . the grip 106 may comprise for example a rubber partial sleeve adapted to close over and grasp the tube of one of the press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , 26 . the grip 106 may have grip characteristics enabling the grip 106 to be manually placed on and removed from its associated press fit linear member 12 , 14 , 16 , 18 , 20 , 22 , 24 , or 26 . the lighting module 88 is one of a plurality of similar separate lighting modules 90 , 92 , 94 which may be utilized with the green screen 10 . again referring to fig1 , the lighting module 88 may comprise a microphone 108 which is colored in the keying color , and has an attachment element for removably attaching or otherwise coupling to the press fit linear member 12 of the open skeleton frame . the attachment element may take any suitable form , ranging from a clip , a patch of hook and loop material , a hook , and similar fasteners ( none shown ) to being incorporated integrally into the lighting module 88 . returning to fig9 , the lighting module 88 may comprise a speaker 110 which may have an attachment element for removably attaching or coupling to the press fit linear member 12 of the open skeleton frame . the attachment element may comprise a fastener such as a clip , a patch of hook and loop material , a hook , and similar fasteners ( none shown ) or may be incorporated integrally into the lighting module 88 , as depicted . the speaker 110 may be connected to the battery 98 by circuitry 102 , which will be understood to extend to a switch ( represented by a switch operator 112 ) so that the speaker 110 may be turned on and off . it is also contemplated by the inventor that the lighting modules , speakers , microphones , and other related electronics described herein may be ac power - operated . the green screen 10 has been described in terms of press fit linear members comprising three base members 26 , 28 , 30 , four vertical linear members 12 , 14 , 16 , 18 , and four linear members 20 , 22 , 24 , 26 adapted to occupy a horizontal plane when the open skeleton frame is assembled and to define a ceiling zone . however , other arrangements of the open skeleton frame are possible . this is shown in fig1 , which diagrammatically shows a skeleton frame made from fewer than the number of constituent members of the skeleton frame of fig1 and 2 . the skeleton frame of fig1 includes seven principal members 114 , 116 , 118 , 120 , 122 , 124 , 126 , which may be generally similar in construction and connection to their counterparts of fig1 and 2 , differing only in number and connection to adjacent members . therefore , an open skeleton frame for a portable green screen according to the present invention may comprise a plurality of manually joined and separated press fit linear members such as the press fit linear members 12 , 14 , 16 , 18 , 20 , 22 , 24 , and 26 , which may be assembled to define a three dimensional enclosed space . the enclosed space may include a rear zone , a right side zone , a left side zone , a floor zone , a ceiling zone , and may define an open front end . the number of press fit linear members may include at least two base members such as the base members 26 , 28 , disposed to lie on a floor surface , but not necessarily more than two ; at least but not necessarily more than two vertical linear members , such as the vertical linear members 12 , 14 , 16 , or 18 ; and at least two linear members such as the linear members 20 , 22 , 24 , or 26 , adapted to occupy a horizontal plane when the open skeleton frame is assembled and to define a ceiling zone . the number and arrangement of flexible webs such as the flexible webs 32 , 70 , and 72 may be varied from the arrangement of fig1 . as seen in fig1 , the flexible webs may include a floor web 126 , a wall web 128 which covers right and left side zones , and a rear zone , and a ceiling or upper web 130 . the number and arrangement of flexible webs may be further varied . for example , each of the five covered sides of the interior space may have its own flexible web ( not shown ). the five covered sides may be covered by one large cruciform flexible web , by two flexible webs , or by four flexible webs ( none of these options is shown ). also , more than one of the covered sides may be covered by a curved flexible web , rather than having flexible webs which essentially occupy planar spaces . while the present invention has been described in connection with what is considered the most practical and preferred embodiment , it is to be understood that the present invention is not to be limited to the disclosed arrangements , but is intended to cover various arrangements which are included within the spirit and scope of the broadest possible interpretation of the appended claims so as to encompass all modifications and equivalent arrangements which are possible
a portable and collapsible , green screen device for videographers and photographers . the green screen has manually assembled and disassembled frame members on which are placed colored panels or colored fabric . the frame members may be bendable tubes , and press - fit together . the panels cover all frame members with a selected keying color . the screen defines a three - dimensional cavity having a rear zone , right and left zones , floor , and ceiling of the space enclosed by the colored panels or fabric . lighting modules and microphones may be rendered in the keying color and may be mounted on the frame . lighting modules may incorporate a speaker in addition to illumination elements , and may contain or anchor speakers which may be rendered in the keying color .