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Crystal Vision

Appendix 1

Chroma Key Refine

Chroma Key

Tune

Foreground Balance

This control moves the acceptance window of the FG

suppressor circuitry about the selected backdrop hue. This

control is useful when the FG objects contain colours close

to the backdrop colour and so can help minimise

desaturation of some FG colours while maintaining good

backdrop colour suppression.

Foreground Tints

This control allows areas of the foreground that contain low

saturation levels of the backing colour to be passed without

being suppressed.

Background Saturation

This control helps compensate for a poorly saturated camera

output in FG backdrop areas. Ideally, a well lit backdrop

would produce a 100% saturated colour output from the

camera; but this is rarely the case. While monitoring the

output key and with max clip set to 100, adjust this control to

provide an even and low noise key in the backdrop area. The

max clip control can then be adjusted to amplify the key to

full level. This control is automatically set by quick setup.

Shadow Density

This control changes the appearance of shadows. Increasing

the value of this control will make shadows appear more

prominent and decreasing less prominent.

Chroma Key

Filters

Ring Suppression

This control helps minimise ringing introduced by the

camera.

Noise Reduction

This control adds a variable amount of filtering to the

Background key signal to help minimise noise while

maintaining fine edge detail.

Edge Softening

This control adds a variable amount of filtering to the

Background key signal to smooth jagged edges caused by

high levels of key gain and to minimise noise.

Outputs

Main/Aux Outputs

Select which signal is routed to the main and aux outputs.

See Chroma Keyer tab for details.

Safire 3 User Manual R1.3

24 March 2017

Содержание Safire 3

Страница 1: ...HD SD real time chroma keyer Crystal Vision Ltd Lion Technology Park Station Road East Whittlesford Cambridge CB22 4WL England Tel 44 0 1223 497049 Fax 44 0 1223 497059 sales crystalvision tv www crys...

Страница 2: ...erface 11 Introduction 11 Indigo DT desk top box GPI connections 13 1U frame GPI connections 14 2U frame GPI connections 14 5 VisionPanel 15 Introduction 15 Panel Overview 16 Mounting 16 Connecting 17...

Страница 3: ...tus 44 Key Fade 45 Presets 46 Delay Timing 46 Engineering 47 8 Using Safire 3 50 Auto Setup 52 Foreground Suppression 53 Background Key 56 Additional Controls 57 Re Spill 60 Foreground Tints 61 Lighti...

Страница 4: ...dix 1 75 Statesman Control 75 Statesman operation 75 Status Presets 76 Signal Status 76 Key Status 77 Presets 77 Chroma Key 78 Auto Setup 78 Manual Setup 80 Fine Tune 83 Chroma Key Adjust 83 Chroma Ke...

Страница 5: ...e 3 Controller and VisionWeb Control and removal of front panel and board edge control Statesman control moved to appendix 02 04 14 R1 2 Safire 3 Controller renamed as VisionPanel Updated panel operat...

Страница 6: ...istic composite image after chroma keying RGB gain and lift of the Foreground video signal Offset the graphic generator s delay up to ten frames of video delay for each input Correct timing errors aut...

Страница 7: ...y colour exactly the same as the FG hue colour will be suppressed to black Luminance is subtracted from the suppressed signal to ensure that all the coloured backdrop area is black In Multiply Foregro...

Страница 8: ...al Vision Introduction The FG and BG signal are mixed with their selected video matte or black fills before being added together to make the final composite output Safire 3 User Manual R1 3 7 24 March...

Страница 9: ...t Link Towards front of board or Up Towards the rear of board or Down J1 Sync input unterminated Sync input terminated by 75 ohms J9 Debug mode forces board s IP address to be 10 0 0 201 Normal mode f...

Страница 10: ...ctions with RM50 The RM50 being a single height module will allow maximum packing density with the maximum number of inputs and outputs available RM50 rear module connector Description RM50 12 per Ind...

Страница 11: ...x per Indigo 1 frame Two per Indigo DT All frame slots can be used BNC connections BNC I O assignment FG IN 3G High Definition Standard Definition serial digital input KEY IN 3G High Definition Standa...

Страница 12: ...I inputs are sampled in the vertical interval it is recommended that in pulse mode the GPI should be asserted at least 2mS before the start of vertical sync to ensure stability and held active for at...

Страница 13: ...H 20 L H H L L 21 L H L H H 22 L H L H L 23 L H L L H 24 L H L L L 25 L L H H H 26 L L H H L 27 L L H L H 28 L L H L L 29 L L L H H 30 L L L H L 31 L L L L H 32 L L L L L Binary coding of GPI inputs t...

Страница 14: ...pin c pin d pin e pin f pin 1 8 1 9 1 18 1 26 1 19 2 20 2 2 7 1 16 1 17 1 25 1 10 2 11 2 Table shows pin number remote number Note Remote 1 26 way high density D Type female socket Frame ground is pin...

Страница 15: ...s a to f of each card connect to two of four rear remote connectors as follows Slot no a pin b pin c pin d pin e pin f pin 1 8 1 9 1 18 1 26 1 19 2 20 2 2 7 1 16 1 17 1 25 1 10 2 11 2 3 8 3 9 3 18 3 2...

Страница 16: ...monitor your incoming and outgoing signals Presets Jump to the presets menu allowing the quick recalling or storing of a preset Back Home Go back a menu level or jump to the Home menu if the Shift bu...

Страница 17: ...rack using the supplied mounting ears The desk stand brackets can be mounted in two orientations as shown below The panel is shipped with the brackets pre fitted to the shallower orientation To change...

Страница 18: ...e Indigo 2SE 2AE or equivalent 1U or desk top models See the frame specific manuals for details on how to assign an IP address to the frame Connect VisionPanel to the same network as the Crystal Visio...

Страница 19: ...which will eventually be filled by the names and locations of detected cards Example of Card List display showing a number of Crystal Vision cards 2 Press the Options button at the top left of the to...

Страница 20: ...omain names and IP addresses Note The Broadcast address and DNS server information is not currently used so can be left at the default values 4 Press Set when all the fields have been entered 5 Press...

Страница 21: ...cept those cards specifically excluded by card management 10 Selecting any Safire 3s will display the card s home page Safire 3 s home page The Safire 3 s home page is split into three panels Chroma K...

Страница 22: ...nels Right hand side panel buttons Use the push buttons on the right hand side for the following actions Shift Hold down to select the alternate function Outputs jumps the touch screen to the Outputs...

Страница 23: ...obs The six knobs allow easy adjustment of the touch screen slider controls For coarse adjustment either press hold down and turn the knob or hold down the Shift button and turn the knob Safire 3 User...

Страница 24: ...ctor and browsing to the IP address of the frame a similar page to below will be displayed showing all the controllable boards fitted in the frame By selecting Safire 3 the board s home page will be d...

Страница 25: ...levant frame user manual for more information on VisionWeb Control and setting up of the frame IP address and connecting to a computer Menu Tree The following menu structure is the means to access the...

Страница 26: ...ceptance Foreground Suppression Acceptance Chroma Key Control Enable Suppress Foreground Multiply Foreground Edges Key Invert Remove Chroma Key Removal Black Greys White Edges Shadows Edge Processing...

Страница 27: ...Re spill enable Red Green Output Blue Signal Outputs Main Keys Aux FG BG Masks Keys Masks External Key Control Enable Multiply Invert Min Clip Max Clip External Mask Control Enable Multiply Invert Mi...

Страница 28: ...ral Signal Status FG Input Standard Input Present Input Black Input Frozen Input ATC Present BG Input Standard Input Present Input Black Input Frozen Input ATC Present Key Input Standard Input Present...

Страница 29: ...nce Foreground Input Delay Background Input Delay Key Input Delay Short Delay Output Delay Pixel Timing Line Timing Frame Delays FG BG Key Engineering Output Format Ancillary Data Invert Output Key GP...

Страница 30: ...boxes buttons or sliders which change various Safire 3 settings Note Slider controls in VisionWeb Control once selected can be moved by the keyboard up and down arrow keys to give finer control than...

Страница 31: ...curate the result Foreground Select 0 1 or 4 samples from the foreground area of the FG picture to use for auto setup These samples are optionally visible on the main and or aux outputs and can be re...

Страница 32: ...Increasing the min clip value will force lower key levels to zero This is mainly used when small amounts of key level remain in foreground object areas causing breakthrough of the new background Any...

Страница 33: ...s resulting in the new background breaking through to the foreground Chroma Key Control Enable Select this to enable chroma key operation on the foreground Suppress Foreground Select this to enable FG...

Страница 34: ...black as possible Over suppressing will distort edges possibly causing a black halo around FG objects Acceptance Adjust this control to change the range of colours about the hue colour acceptance wind...

Страница 35: ...ominent Key Shrink Adjust the shape of the key If a black line appears around foreground objects when the new background is added adjust the key shrink control to help compensate for this Hue and Bala...

Страница 36: ...often there is a variation in backdrop colour caused by lighting etc so adjust this control to give the best suppression in the most noticeable areas This control is best adjusted with the suppression...

Страница 37: ...asing key gain max clip will help compensate for that but at the expense of fine detail By monitoring the output key and adjusting the lighting compensation controls it is possible to minimise the eff...

Страница 38: ...ppressed FG if some luminance remains in the FG backdrop areas FG Colour Correct RGB Lift and Gain correction of the keyed foreground signal Foreground RGB Gain These controls adjust the individual re...

Страница 39: ...noise Foreground Re Spill Red Green Blue These controls add a colour tint to the backdrop spill areas of the suppressed FG picture to counteract any noticeable colourisation When an object is placed...

Страница 40: ...pressed Foreground image after chroma keying This signal is useful for fine adjustment of the various controls to optimise the removal of the key colour from the subject Keyed BG the Background signal...

Страница 41: ...tion fill area Invert Select to invert the clipped key External Mask Control Enable Select to enable the external key signal as a mask The mask signal disables the self key and chroma key in its activ...

Страница 42: ...edges Invert Select this control to invert the mask Internal BG Mask Enable and set rectangle size for internal BG mask Left Top Right Bottom Use these controls to position the mask rectangle Enable...

Страница 43: ...o set the colour of the BG matte that will be used when the BG source is set to matte Foreground Use these controls to select the source of the FG signal Select either video black or the colour matte...

Страница 44: ...each edge of the BG mask rectangle BG Softness Left Top Right Bottom Use these controls to soften the four edges of the mask to make the mask less noticeable The internal masks can be configured and p...

Страница 45: ...dard i e 1920x1080 50i Input Freeze Enabled Lights yellow if FG input freeze selected in Auto Setup Output Faded to Black Lights yellow if output faded to black in Key Fade Key Status Monitor the stat...

Страница 46: ...image will be faded up and down but masks are unaffected External and self key will fade up and down Fades Up Down These indicate which direction the autotrans operation will take Fade to Black Fade T...

Страница 47: ...ource output timing with respect to reference and video delays for all inputs Output Delay Pixel Timing Delay output video horizontally by 0 to 2640 pixels with respect to reference See note below Lin...

Страница 48: ...t Short Delay Select this to disable the Noise Reduction and Edge Softening filters to minimise propagation delay Short Delay for SD 85uS HD 18uS 3G 10uS Without Short Delay selected add 5 lines delay...

Страница 49: ...r high level as the active level for the GPI GPI Trigger Select whether GPI recall should be triggered by a change in level or a pulse GPI Fade Keys Enable Select to enable fading of keys by GPI GPI A...

Страница 50: ...ions Reset Defaults Select to restore Safire 3 to default conditions without erasing stored presets Erase Presets Select to restore Safire 3 to default conditions AND erase stored presets Safire 3 Use...

Страница 51: ...parts of the FG image Here is an example of a FG image The model is sitting in front of a green backdrop The backdrop can be of any uniform colour provided the foreground objects don t contain exactl...

Страница 52: ...the backdrop colour with black Above the green backdrop has been replaced by black and other foreground colours remain largely unaffected A similar process is used to create a key to cut a hole in the...

Страница 53: ...afire 3 s controls are adjusted automatically so some knowledge of the other controls is essential Each control is explained in detail in the Controls section but the following brief explanation with...

Страница 54: ...Auto Setup Foreground Suppression Safire 3 works by suppressing the colours of foreground objects within a range of hues set by a combination of the Suppression Hue control in the Hue Balance menu an...

Страница 55: ...s the range of colours that are suppressed has been set at too narrow an angle This control is set automatically by Auto Setup but may need adjusting for best results In the next picture the FGS Accep...

Страница 56: ...ur to the blue backdrop Auto Setup without a foreground sample produces the following result Some key remains which causes the BG signal to be visible on foreground areas but with a single foreground...

Страница 57: ...ground Key The key that cuts the hole in the new BG is derived from Key Hue in the Hue Balance menu and Chroma Key Acceptance in the Gain Spill menu and modified by the Chroma Key controls Min Clip an...

Страница 58: ...key signal removing variations to give an even result The following picture is the Output Key with Max Clip set to a low value although there are no variations in key in backdrop areas fine hair deta...

Страница 59: ...above the Auto Setup value to show the raw key signal The variations in backdrop illumination can clearly be seen as can scuff marks on the floor Should Auto Setup fail to produce a satisfactory resu...

Страница 60: ...tions still remain in the key signal Increasing key gain by reducing the Max Clip value will certainly remove the keying in the floor area but at the expense of key quality Increasing the Min Clip val...

Страница 61: ...ere backdrop colour appears on the foreground objects usually by reflection off skin or clothes This can make foreground objects appear unnatural when chroma keyed over a different colour background T...

Страница 62: ...abled Colour Adjust In the Brightness Contrast menu Safire 3 has controls that enable the final composite image to be as realistic as possible These include individual Lift Gain and Chroma level contr...

Страница 63: ...G BG Source Matte menu External Key The External Key input can be used as a linear key to cut a hole into the BG signal Logos often have two separately generated components a key and a fill To create...

Страница 64: ...BG signal The logo needs to appear as though it is painted onto the pitch with players apparently able to walk over it and it is possible to combine the chroma key and External Key to limit chroma key...

Страница 65: ...reground contained an object of exactly the same colour as the backdrop or a highly reflective object was causing unwanted keying then a well placed key could be input to prevent this External Mask Du...

Страница 66: ...appear to be walking behind them Internal Masks Safire 3 has two independent internal rectangular mask generators to remove unwanted foreground keying and to force keying in areas where the backdrop...

Страница 67: ...he FG Mask the tears are clearly visible The patch can be keyed out by widening the FG Acceptance window control and adjusting the key controls With the FG Mask the left hand side and some of the righ...

Страница 68: ...ond example shows the FG model wearing a badge of identical colour to the backdrop Normally this would cause an unavoidable key After chroma keying the BG image can be seen in the badge Using the BG M...

Страница 69: ...pictorial description of key polarities for common Safire 3 key operations The White high level key is the part of the key signal that will show the FG picture and Black low level key the BG picture...

Страница 70: ...put into the BG signal and fill with FG video matte or black To force the FG picture to override the chroma key This key shape would limit chroma keying to the black area only and force the FG picture...

Страница 71: ...as take priority To force the BG picture to override the chroma key using the external key input as a mask The mask signal above combines with the chroma key to force the composite to BG in the black...

Страница 72: ...reground subjects should be as far away as possible from the backdrop at least 2m This may not be possible with weather maps for example but some lighting techniques can minimise the effect of spill u...

Страница 73: ...re is no video output Check that a valid SDI input is present and that any cabling is intact The video output exhibits jitter Check that the input SDI stability is within normal limits The card no lon...

Страница 74: ...0 1080p59 94 1080p60 1080PsF23 98 1080PsF24 1080PsF25 1080PsF29 97 1080PsF30 2048x1080p23 98 2048x1080p24 2048x1080p25 2048x1080p29 97 2048x1080p30 2048x1080PsF23 98 2048x1080PsF24 2048x1080PsF25 2048...

Страница 75: ...t least 2mS before vertical interval GPI outputs Number and type None Input fail output Type Dark Blue Control Remote Control from VisionWeb Control web browser software Control from VisionPanel 3U to...

Страница 76: ...mmunicates with each module in a frame through a Statesman capable front panel CPU or full active control panel Either of these must be fitted to the frame to allow Statesman control Statesman operati...

Страница 77: ...b is shown with a screen grab and description of each control s function Status Presets The board status is shown using a mixture of simulated LEDs and text information As a general rule a green LED s...

Страница 78: ...tab Self Key Control Faded Down On when self key is enabled and faded down See Keyers Effects tab Fade Keys External Key Enabled On when External Key is enabled See Keyers Effects tab External Key Co...

Страница 79: ...f towards the edges when grab samples is selected See Fine Tune tab Lighting Compensation Auto Re Spill Select to automatically compensate for any backdrop colour spill on FG objects when grab samples...

Страница 80: ...he samples to compensate Sample Positions Reset Samples Return sample positions to their default locations Sample Select Select which sample to re position the selected sample will slowly flash on the...

Страница 81: ...y When the key signal is amplified it loses its original shape and this can cause a black line around foreground objects when the new background is added Adjusting the key edge shape can help to compe...

Страница 82: ...e angle is set too large then unwanted suppression may occur on foreground objects Adjust the hue control as well to get the best compromise if there are large variations in backdrop colour This contr...

Страница 83: ...added to the keyed background With good lighting and a high quality chroma key backdrop it is usually better to not select Multiply Foreground as FG Suppression and non multiply mode give better resul...

Страница 84: ...ly for Standard Definition Left Right Top Radial These controls help compensate for uneven backdrop lighting The lighting distribution of a spotlight is a bright centre that fades away to the edges in...

Страница 85: ...ut key and with max clip set to 100 adjust this control to provide an even and low noise key in the backdrop area The max clip control can then be adjusted to amplify the key to full level This contro...

Страница 86: ...t video and use the lift gain and chroma controls to achieve the best results BG Match BG Lift Gain Chroma These controls modify the BG video signal so it matches the keyed Background in the final com...

Страница 87: ...spill around its edges and reflecting surfaces but if a blue background i e sky was chroma keyed behind the green spill would look unnatural Adding a blue FG re spill in this case would produce a mor...

Страница 88: ...isabled if self key mode is enabled Multiply Select to key the FG signal before adding to the keyed BG signal Select if the FG signal is not black outside of the caption fill area Invert Select to inv...

Страница 89: ...e if the control is set to 80 then all key levels above 80 of max will be clipped and amplified to full scale External Mask Control Enable Select to enable the external key signal as a mask The mask s...

Страница 90: ...he FG signal Select either FG video black or the colour matte usually FG video for chroma keying Red Green Blue Set the FG colour matte using these controls BG Source and Matte BG Source Use these con...

Страница 91: ...to enable the FG mask This user positionable mask will override the chroma key in its active area to force the BG signal Use this mask if the chroma key backdrop is too small or damaged or badly lit a...

Страница 92: ...BG mask does not override FG suppression only the BG key Invert Select this control to invert the mask BG Mask Window Left Right Top Bottom Use these controls to position the mask rectangle BG Mask So...

Страница 93: ...Trigger Select whether GPI triggering should be triggered by a permanent change in level or a transition Board Reset Defaults Select to restore Safire 3 to default conditions without erasing stored p...

Страница 94: ...ATC Lock the HD progressive video output to Ancillary Timecode Swap FG BG Key Input Swap field sequence of the selected progressive video input Swap Output Frames Swap field sequence of the progressi...

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