image capture tips - full body capture

Full Body Capture Tips Below there are several recommendations regarding full body capture based on AgiSoft team experience with such data: Capturing scenario: Capture system should consist of 5! well synchroni"ed #S$% cameras& 'umber of (blind)"ones( should be minimi"ed since *hotoScan is able to reconstruct geometry visible from at least two cameras+ Camera placement and zone overlap should be planned car efully& ,ach photo should effectively use the frame si"e: ob-ect of interest should ta.e up the maximum area+ /n some cases portrait camera orientation should be used& 0ood lighting is re1uired to achieve better 1uality of the results2 yet blin.s should be avoided+ /t is recommended to remove sources of light from camera fields of view& The ob-ect should contrast against the bac.ground& blin.s from the bac.ground on the ob-ect surface should be avoided+ Starting from +3 version *hotoScan has mas.)by)bac.ground feature2 that allows automas.ing for fixed cameras2 providing that (empty( shots for every camera are ta.en without the present of the ob-ect of interest+ The bac.ground should be .ept unchanged during ob-ect shooting& #o not try to place full ob-ect in the image frame2 if some parts are missing it is not a problem whereas these parts appear on other images& Cameras should not be placed very close to each other2 recommended distance between cameras is one tenth from the distance from camera to ob-ect+ Object specifics: 4ai r is dif ficu lt for reco nst ruct ion 2 usi ng wel l textur ed hat for exa mple2 .ni tti ng6 is recommended& 7sing cloth with irregular texture pattern that could be distingui shable on photos is highly recommended: -eans2 .nitting2 etc+ Too dar. as well as too bright cloth are not good+ Avoid using synthetics2 blin.ing shoes and other cloth with poor texture+ Lens: Fixed lens are preferred+ /f "oom lens are used 8 focal length should be set either on maximal or minimal value2 if this conditi on is not provide d each "oom)l ens camera should be calibrated separately& Try to use minimal possible camera9lens models and different focal length+ Camera settings: 7sing %A data losslessly converted to the T/FF files is preferred2 since ;*0 compression induces unwanted noise to the images& /mages should be ta.en at maximal possible resolution& <i ni mal po ssible /S= value should be used2 ot herwise hi gh /S= values will induce additional noise to images& Apertu re value should be high enough to produ ce the suff icient focal depth2 it is important that most of ob-ect details are clearly visible and aren>t blurred& Shutter speed should not be fast enough to prevent blur caused by possible movements+ Images: /ma ges sho uld not be resi "ed2 rot ated or any how transf ormed in terms of geomet ry + *hotoScan operate with the original images+

image capture tips - full body capture

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