{"id":631,"date":"2024-11-13T12:53:38","date_gmt":"2024-11-13T11:53:38","guid":{"rendered":"https:\/\/ensci.etienne.design\/?p=631"},"modified":"2024-12-11T17:28:36","modified_gmt":"2024-12-11T16:28:36","slug":"unite","status":"publish","type":"post","link":"https:\/\/ensci.etienne.design\/index.php\/2024\/11\/13\/unite\/","title":{"rendered":"\u00ab\u00a0Proportion de Ciel\u00a0\u00bb \u2013 BO\u00ceTIER – MIDJOURNEY"},"content":{"rendered":"\n

LAB Experimental : Intelligences artificielles\u00a0<\/strong>\u2013 Etienne Mineur<\/p>\n\n\n\n

<\/p>\n\n\n\n

Le grille de proportion avec ses 100 cases (\u00e9quivalente chacune \u00e0 1% de ciel) a ses limites. Son calcul est approximatif seulement et ne s’adapte pas \u00e0 toutes les typologies de fen\u00eatres et d’espaces. <\/p>\n\n\n\n

J’imagine alors un outil plus performant et pr\u00e9cis, un bo\u00eetier de calcul automatique<\/strong> que l’on vient plac\u00e9 dans l’espace duquel on souhaite avoir la proportion de ciel. Le capteur rappel les g\u00e9om\u00e8tres pour faire des relev\u00e9s topographiques.<\/p>\n\n\n\n

Bo\u00eetier de mesure de la proportion de ciel g\u00e9n\u00e9r\u00e9 par MIDJOURNEY :<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
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Fiche technique d’un agent immobilier avec le nouvel indicateur<\/strong> :<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
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<\/p>\n\n\n\n

Abstract (in English )<\/strong><\/p>\n\n\n\n

The ‘Sky View Factor’ is a measure of how much sky you can see from a certain point. If you were on an infinite plane you would see a full half dome of sky. That would be 100% sky view factor.<\/p>\n\n\n\n

As soon as something is placed on the infinite plane – trees, buildings, hills – parts of the sky are hidden. You can no longer see 100% of the sky: the Sky View Factor falls. The more things, the bigger and taller they are, the lower the SVF.<\/p>\n\n\n\n

It is a measure for feeling enclosed, and will have an impact on the quality of open space.<\/p>\n\n\n\n

It is quite easy to create the index for a point.<\/p>\n\n\n\n

    \n
  1. shoot rays out from the test point<\/li>\n\n\n\n
  2. check which hit geometry<\/li>\n\n\n\n
  3. associate each ray with a patch of the sky dome.<\/li>\n\n\n\n
  4. Work out the area of the sky that is visible from each point<\/li>\n<\/ol>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \n\n\n\n

    Researches :<\/h2>\n\n\n\n

    The sky view factor (SVF<\/em>) is essential to describe the urban climatology at scales below 100m<\/em>. This proxy for net radiation depends on the height of the obstacles in its surroundings. The SVF<\/em> was calculated from a rasterized point cloud height dataset (with 6\u202f\u2212\u202f10 points per m<\/em>2<\/sup>). The resulting SVF<\/em> depends on grid-resolution, search radius and number of directions. Previous research related the diurnal maximum urban heat island<\/a> (UHI<\/em>) of the canopy layer to the diurnal temperature range, solar irradiance, wind speed<\/a>, vegetation fraction and SVF<\/em>. The goal of this study is to determine the sensitivity of the SVF<\/em> and the impact on the UHI<\/em>. Within the Netherlands a test area of 70km<\/em>2<\/sup> was selected, including: urban areas, meadows and forests. There is a high sensitivity for grid-resolution. Therefore the impact of the SVFs<\/em> grid resolution on the maximum UHI<\/em> is explored. Results show that the fourth largest city within the Netherlands, Utrecht, has a mean diurnal maximum UHI<\/em> of 3.1\u202f\u00b0C using a 1m SVF<\/em> resolution. But, with a 3m SVF<\/em> resolution the UHI<\/em> is on average 0.6\u202f\u00b0C lower. This highlights the significance of a fine grid resolution which can capture houses, alleys and trees.<\/p>\n\n\n\n

    \n\n\n\n

    La photogramm\u00e9trie au service
    des arch\u00e9ologues et des architectes<\/strong><\/p>\n\n\n\n

    AliceVision<\/strong> est un framework<\/a> de vision par ordinateur<\/a> et de photogramm\u00e9trie<\/a> qui permet de g\u00e9n\u00e9rer un mod\u00e8le 3D textur\u00e9 \u00e0 partir d’un ensemble non ordonn\u00e9 de photos.<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \n","protected":false},"excerpt":{"rendered":"

    LAB Experimental : Intelligences artificielles\u00a0\u2013 Etienne Mineur Le grille de proportion avec ses 100 cases (\u00e9quivalente chacune \u00e0 1% de ciel) a ses limites. Son calcul est approximatif seulement et ne s’adapte pas \u00e0 toutes les typologies de fen\u00eatres et d’espaces. J’imagine alors un outil plus performant et pr\u00e9cis, un bo\u00eetier de calcul automatique que […]<\/p>\n","protected":false},"author":14,"featured_media":634,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-631","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thea-schiffers"],"_links":{"self":[{"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/posts\/631","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/comments?post=631"}],"version-history":[{"count":13,"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/posts\/631\/revisions"}],"predecessor-version":[{"id":1172,"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/posts\/631\/revisions\/1172"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/media\/634"}],"wp:attachment":[{"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/media?parent=631"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/categories?post=631"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ensci.etienne.design\/index.php\/wp-json\/wp\/v2\/tags?post=631"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}