{"id":754,"date":"2018-06-03T21:14:08","date_gmt":"2018-06-04T04:14:08","guid":{"rendered":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/?p=754"},"modified":"2018-06-03T21:31:06","modified_gmt":"2018-06-04T04:31:06","slug":"photogrammetry","status":"publish","type":"post","link":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/2018\/06\/03\/photogrammetry\/","title":{"rendered":"Photogrammetry – by Emily W."},"content":{"rendered":"

[et_pb_section bb_built=”1″][et_pb_row][et_pb_column type=”4_4″][et_pb_text _builder_version=”3.3.1″]<\/p>\n

In class on May 31st<\/sup>, my group learned many things in the classroom.\u00a0 We spent most of the day learning how to use programs such as PhotoScanPro<\/a> and MeshLab<\/a>, which proved to be both exciting and a little challenging.\u00a0 The purpose of PhotoScan was to learn Photogrammetry, where we created 3D models from 2D images!\u00a0 I find being able to do this completely fascinating because, just from taking a series of pictures of an object, you can create very realistic models that represent the work being done in the field, in our case in the Emanu-El Jewish Cemetery.\u00a0 The program works by finding measurements on many overlapping images, and uses all the points to create the 3D model (MacKinnon, 2017).\u00a0 Although taking the images is a relatively quick process, the program takes much longer. For instance, my team\u2019s model took more than four hours to complete just one step!\u00a0 The subjects used for this assignment were gravestones located in the Jewish Cemetery and my gravestone, which is seen being modelled in the pictures below, will be further assessed in another assignment.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=”1_2″][et_pb_image _builder_version=”3.3.1″ src=”https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-content\/uploads\/sites\/1174\/2018\/06\/long-process.png” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

One stage of Photogrammetry \u2013 taking a long time! By Emily Wushke<\/em><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″][et_pb_image _builder_version=”3.3.1″ src=”https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-content\/uploads\/sites\/1174\/2018\/06\/program-were-using.png” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

PhotoScanPro \u2013 the program used to make our 3D models, by Emily Wushke<\/em><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=”4_4″][et_pb_text _builder_version=”3.3.1″]<\/p>\n

As someone who is not very tech savvy, I found working with this program to be challenging, as it took me a while to understand the ins and outs of it.\u00a0 Since it ended up taking a long time to load, I found myself growing frustrated and I was worried that something would go wrong with the program.\u00a0 However, seeing the finished model made it worth it in the end.\u00a0 It was especially exciting because the inscription on my team\u2019s gravestone is nearly indecipherable when viewing it in the cemetery and in the pictures.\u00a0 The MeshLab program allowed my partner and I to play around with light and other settings on the 3D model.\u00a0 The settings were called \u2018dynamic relighting\u2019 and \u2018depth mapping\u2019, and enabled us to read much more of the inscription and add information that was previously missing on the record.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=”1_2″][et_pb_image _builder_version=”3.3.1″ src=”https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-content\/uploads\/sites\/1174\/2018\/06\/dynamic-relighting.png” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

The 3D model imported into MeshLab undergoing \u201cdynamic relighting\u201d, by Emily Wushke<\/em><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″][et_pb_image _builder_version=”3.3.1″ src=”https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-content\/uploads\/sites\/1174\/2018\/06\/depthmapping.png” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

The second stage in MeshLab called \u201cdepthmap\u201d, which colours the monument based on elevations of the monument\u2019s surface (MacKinnon, 2018), by Emily Wushke<\/em><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=”4_4″][et_pb_image _builder_version=”3.3.1″ src=”https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-content\/uploads\/sites\/1174\/2018\/06\/depthmapping2.png” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

The depth mapping uses the \u2018zmax\u2019 and \u2018zmin\u2019 sliders to change where the inscription pops out the most.\u00a0 My partner and I had to keep adjusting the levels and rotating the model in order to clearly see the inscriptions.<\/em><\/p>\n

[\/et_pb_text][et_pb_text _builder_version=”3.3.1″]<\/p>\n

Overall, Thursday\u2019s class and the field school in general has been an incredible experience.\u00a0 It is heartwarming to see the difference we are making in the Jewish community and to be able to be part of such an amazing group.\u00a0 I didn\u2019t know I could learn so much from spending only a few weeks in a cemetery, but I did and I will always be thankful for this opportunity.\u00a0 Our class learned many things in addition to the 3D modelling programs, from how to fill out recording forms to cleaning gravestones, as well as the stories of many people buried in the cemetery.\u00a0 Although I had many questions every day and always had to check if I was doing something correctly, I know this was a learning experience for the students too.\u00a0 The more I do the assignments and practice the skills we have all been learning, the easier the tasks will become, both for the photogrammetry and assignments within the cemetery.\u00a0 I will likely be creating additional 3D models because I believe it is an important aspect to the field course.\u00a0 They are not only things that are cool to create, but the models represent real stories and real people.\u00a0 Having the models to fill in missing information will not only help us learn, but will also give back to the community, which is truly spectacular.<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=”1_2″][et_pb_image _builder_version=”3.3.1″ src=”https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-content\/uploads\/sites\/1174\/2018\/06\/expic.jpg” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

One of the original pictures out of the 49 used to create the 3D model, taken by Mekyah Vieira (plot D34 in the Emanu-El Cemetery)<\/em><\/p>\n

[\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″][et_pb_image _builder_version=”3.3.1″ src=”https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-content\/uploads\/sites\/1174\/2018\/06\/finished-product.png” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

Final 3D model in the Photogrammetry stage<\/em><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=”4_4″][et_pb_video _builder_version=”3.3.1″ src=”https:\/\/youtu.be\/hHzD9Y-w1DY” \/][et_pb_text _builder_version=”3.3.1″]<\/p>\n

A short video showing the process of \u2018depth mapping\u2019 and how different angles\/settings show different parts of the inscription.<\/em><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div> In class on May 31st, my group learned many things in the classroom.\u00a0 We spent most of the day learning how to use programs such as PhotoScanPro and MeshLab, which proved to be both exciting and a little challenging.\u00a0 The purpose of PhotoScan was to learn Photogrammetry, where we created 3D models from 2D […]<\/p>\n","protected":false},"author":1148,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"

In class on May 31st<\/sup>, my group learned many things in the classroom.\u00a0 We spent most of the day learning how to use programs such as PhotoScanPro<\/a> and MeshLab<\/a>, which proved to be both exciting and a little challenging.\u00a0 The purpose of PhotoScan was to learn Photogrammetry, where we created 3D models from 2D images!\u00a0 I find being able to do this completely fascinating because, just from taking a series of pictures of an object, you can create very realistic models that represent the work being done in the field, in our case in the Emanu-El Jewish Cemetery.\u00a0 The program works by finding measurements on many overlapping images, and uses all the points to create the 3D model (MacKinnon, 2017).\u00a0 Although taking the images is a relatively quick process, the program takes much longer. For instance, my team\u2019s model took more than four hours to complete just one step!\u00a0 The subjects used for this assignment were gravestones located in the Jewish Cemetery and my gravestone, which is seen being modelled in the pictures below, will be further assessed in another assignment.<\/p>[caption id=\"attachment_757\" align=\"alignleft\" width=\"275\"]\"\"<\/a> One stage of Photogrammetry \u2013 taking a long time! By Emily Wushke[\/caption][caption id=\"attachment_756\" align=\"alignright\" width=\"275\"]\"\"<\/a> PhotoScanPro \u2013 the program used to make our 3D models, by Emily Wushke[\/caption]

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As someone who is not very tech savvy, I found working with this program to be challenging, as it took me a while to understand the ins and outs of it.\u00a0 Since it ended up taking a long time to load, I found myself growing frustrated and I was worried that something would go wrong with the program.\u00a0 However, seeing the finished model made it worth it in the end.\u00a0 It was especially exciting because the inscription on my team\u2019s gravestone is nearly indecipherable when viewing it in the cemetery and in the pictures.\u00a0 The MeshLab program allowed my partner and I to play around with light and other settings on the 3D model.\u00a0 The settings were called \u2018dynamic relighting\u2019 and \u2018depth mapping\u2019, and enabled us to read much more of the inscription and add information that was previously missing on the record.<\/p>[caption id=\"attachment_758\" align=\"alignleft\" width=\"275\"]\"\"<\/a> The 3D model imported into MeshLab undergoing \u201cdynamic relighting\u201d, by Emily Wushke[\/caption][caption id=\"attachment_759\" align=\"alignright\" width=\"275\"]\"\"<\/a> The second stage in MeshLab called \u201cdepthmap\u201d, which colours the monument based on elevations of the monument\u2019s surface (MacKinnon, 2018), by Emily Wushke[\/caption]

\u00a0<\/p>

\u00a0<\/div>

\u00a0<\/p>[caption id=\"attachment_760\" align=\"aligncenter\" width=\"620\"]\"\"<\/a> The depth mapping uses the \u2018zmax\u2019 and \u2018zmin\u2019 sliders to change where the inscription pops out the most. My partner and I had to keep adjusting the levels and rotating the model in order to clearly see the inscriptions.[\/caption]

Overall, Thursday\u2019s class and the field school in general has been an incredible experience.\u00a0 It is heartwarming to see the difference we are making in the Jewish community and to be able to be part of such an amazing group.\u00a0 I didn\u2019t know I could learn so much from spending only a few weeks in a cemetery, but I did and I will always be thankful for this opportunity.\u00a0 Our class learned many things in addition to the 3D modelling programs, from how to fill out recording forms to cleaning gravestones, as well as the stories of many people buried in the cemetery.\u00a0 Although I had many questions every day and always had to check if I was doing something correctly, I know this was a learning experience for the students too.\u00a0 The more I do the assignments and practice the skills we have all been learning, the easier the tasks will become, both for the photogrammetry and assignments within the cemetery.\u00a0 I will likely be creating additional 3D models because I believe it is an important aspect to the field course.\u00a0 They are not only things that are cool to create, but the models represent real stories and real people.\u00a0 Having the models to fill in missing information will not only help us learn, but will also give back to the community, which is truly spectacular.<\/p>[caption id=\"attachment_763\" align=\"alignleft\" width=\"275\"]\"\"<\/a> One of the original pictures out of the 49 used to create the 3D model, taken by Mekyah Vieira (plot D34 in the Emanu-El Cemetery)[\/caption][caption id=\"attachment_764\" align=\"alignright\" width=\"275\"]\"\"<\/a> Final 3D model in the Photogrammetry stage[\/caption]

https:\/\/youtu.be\/hHzD9Y-w1DY<\/p>

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\u00a0<\/p>","_et_gb_content_width":"","footnotes":""},"categories":[2],"tags":[42,15,46],"class_list":["post-754","post","type-post","status-publish","format-standard","hentry","category-blog","tag-experiential-learning","tag-jewish-cemetery-survey","tag-photogrammetry"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/posts\/754","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/users\/1148"}],"replies":[{"embeddable":true,"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/comments?post=754"}],"version-history":[{"count":8,"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/posts\/754\/revisions"}],"predecessor-version":[{"id":770,"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/posts\/754\/revisions\/770"}],"wp:attachment":[{"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/media?parent=754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/categories?post=754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onlineacademiccommunity.uvic.ca\/archaeograves\/wp-json\/wp\/v2\/tags?post=754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}