@article{Koizumi_Yagyu_Hashizume_Kamiya_Kunieda_Shimazu_2010, title={RealScape: Metropolitan Fixed Assets Change Judgment by Pixel-by-pixel Stereo Processing of Aerial Photographs}, volume={31}, url={https://ojs.aaai.org/aimagazine/index.php/aimagazine/article/view/2281}, DOI={10.1609/aimag.v31i1.2281}, abstractNote={<span style="font-family: Times New Roman;"><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-bidi-font-size: 9.0pt; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: Times; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN">The Tokyo Metropolitan Government, the largest municipality</span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-bidi-font-size: 9.0pt; mso-fareast-font-family: ’MS 明朝’; mso-bidi-font-family: Times; mso-ansi-language: EN; mso-fareast-language: JA; mso-bidi-language: AR-SA;" lang="EN"> in Japan, routinely </span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-bidi-font-size: 9.0pt; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: Times; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN">conduct</span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-bidi-font-size: 9.0pt; mso-fareast-font-family: ’MS 明朝’; mso-bidi-font-family: Times; mso-ansi-language: EN; mso-fareast-language: JA; mso-bidi-language: AR-SA;" lang="EN">s</span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-bidi-font-size: 9.0pt; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: Times; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN"> building-change identification work. Recently, Tokyo terminated its traditional visual identification work, which had been used for 20 years, and shifted to a new automated system. </span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’MS 明朝’; mso-bidi-font-family: Times; mso-ansi-language: EN; mso-fareast-language: JA; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold;" lang="EN">This paper introduces the Fixed Assets Change Judgment (FACJ) system and its core tool, RealScape. RealScape automatically detects changes in the height and color of buildings based on three-dimensional (3D) analysis of aerial photographs. It employs a unique pixel-by-pixel stereo processing method and enables a foot-level precision for each building. RealScape detects building changes more accurately than visual judgment operations by humans and </span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN">reduce</span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’MS 明朝’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: JA; mso-bidi-language: AR-SA;" lang="EN">s</span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN"> the labor costs to </span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’MS 明朝’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: JA; mso-bidi-language: AR-SA;" lang="EN">one third </span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN">of the </span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’MS 明朝’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: JA; mso-bidi-language: AR-SA;" lang="EN">traditional approach a</span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN">nd the required judgment </span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’MS 明朝’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: JA; mso-bidi-language: AR-SA;" lang="EN">duration</span><span style="font-size: 10pt; font-family: &quot;New York&quot;; mso-fareast-font-family: ’Times New Roman’; mso-bidi-font-family: ’Times New Roman’; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;" lang="EN"> to about two weeks per 100 km<sup>2</sup>.</span></span>}, number={1}, journal={AI Magazine}, author={Koizumi, Hirokazu and Yagyu, Hiroyuki and Hashizume, Kazuaki and Kamiya, Toshiyuki and Kunieda, Kazuo and Shimazu, Hideo}, year={2010}, month={Jan.}, pages={51-64} }