{"id":1942,"date":"2019-08-15T12:43:05","date_gmt":"2019-08-15T11:43:05","guid":{"rendered":"http:\/\/www.ceessnoek.info\/?p=1942"},"modified":"2019-08-15T14:02:06","modified_gmt":"2019-08-15T13:02:06","slug":"counting-with-focus-for-free","status":"publish","type":"post","link":"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/","title":{"rendered":"Counting with Focus for Free"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-1946\" src=\"http:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting-300x269.png\" alt=\"\" width=\"300\" height=\"269\" srcset=\"https:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting-300x269.png 300w, https:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting-768x689.png 768w, https:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting-1024x919.png 1024w, https:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting.png 1056w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>The ICCV paper &#8220;<em>Counting with Focus for Free<\/em>&#8221; by <a href=\"https:\/\/staff.fnwi.uva.nl\/z.shi\/\">Zenglin Shi<\/a>, Pascal Mettes and Cees Snoek is <a href=\"https:\/\/arxiv.org\/abs\/1903.12206\">now available<\/a>. This paper aims to count arbitrary objects in images. The leading counting approaches start from point annotations per object from which they construct density maps. Then, their training objective transforms input images to density maps through deep convolutional networks. We posit that the point annotations serve more supervision purposes than just constructing density maps. We introduce ways to repurpose the points for free. First, we propose supervised focus from segmentation, where points are converted into binary maps. The binary maps are combined with a network branch and accompanying loss function to focus on areas of interest. Second, we propose supervised focus from global density, where the ratio of point annotations to image pixels is used in another branch to regularize the overall density estimation. To assist both the density estimation and the focus from segmentation, we also introduce an improved kernel size estimator for the point annotations. Experiments on six datasets show that all our contributions reduce the counting error, regardless of the base network, resulting in state-of-the-art accuracy using only a single network. Finally, we are the first to count on WIDER FACE, allowing us to show the benefits of our approach in handling varying object scales and crowding levels. Code is available at <a href=\"https:\/\/github.com\/shizenglin\/Counting-with-Focus-for-Free\">https:\/\/github.com\/shizenglin\/Counting-with-Focus-for-Free<\/a>.<\/p>\n<p>\u00a0<\/p>\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The ICCV paper &#8220;Counting with Focus for Free&#8221; by Zenglin Shi, Pascal Mettes and Cees Snoek is now available. This paper aims to count arbitrary objects in images. The leading counting approaches start from point annotations per object from which they construct density maps. Then, their training objective transforms input images to density maps through [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1942","post","type-post","status-publish","format-standard","hentry","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Counting with Focus for Free - Cees Snoek<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Counting with Focus for Free - Cees Snoek\" \/>\n<meta property=\"og:description\" content=\"The ICCV paper &#8220;Counting with Focus for Free&#8221; by Zenglin Shi, Pascal Mettes and Cees Snoek is now available. This paper aims to count arbitrary objects in images. The leading counting approaches start from point annotations per object from which they construct density maps. Then, their training objective transforms input images to density maps through [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/\" \/>\n<meta property=\"og:site_name\" content=\"Cees Snoek\" \/>\n<meta property=\"article:published_time\" content=\"2019-08-15T11:43:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-08-15T13:02:06+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting-300x269.png\" \/>\n<meta name=\"author\" content=\"Cees\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Cees\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/\",\"url\":\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/\",\"name\":\"Counting with Focus for Free - Cees Snoek\",\"isPartOf\":{\"@id\":\"https:\/\/www.ceessnoek.info\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting-300x269.png\",\"datePublished\":\"2019-08-15T11:43:05+00:00\",\"dateModified\":\"2019-08-15T13:02:06+00:00\",\"author\":{\"@id\":\"https:\/\/www.ceessnoek.info\/#\/schema\/person\/4bca975b7c432aeb5dced40bdbc204c1\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/#primaryimage\",\"url\":\"https:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting.png\",\"contentUrl\":\"https:\/\/www.ceessnoek.info\/wp-content\/uploads\/2019\/08\/counting.png\",\"width\":1056,\"height\":948},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.ceessnoek.info\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Counting with Focus for Free\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.ceessnoek.info\/#website\",\"url\":\"https:\/\/www.ceessnoek.info\/\",\"name\":\"Cees Snoek\",\"description\":\"research on video and image ai\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.ceessnoek.info\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.ceessnoek.info\/#\/schema\/person\/4bca975b7c432aeb5dced40bdbc204c1\",\"name\":\"Cees\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.ceessnoek.info\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/756ccb993852c1e8e3af39a228d11a7305b2a937750f26dc5799d5df019b0f51?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/756ccb993852c1e8e3af39a228d11a7305b2a937750f26dc5799d5df019b0f51?s=96&d=mm&r=g\",\"caption\":\"Cees\"},\"sameAs\":[\"http:\/\/www.CeesSnoek.info\"],\"url\":\"https:\/\/www.ceessnoek.info\/index.php\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Counting with Focus for Free - Cees Snoek","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.ceessnoek.info\/index.php\/counting-with-focus-for-free\/","og_locale":"en_US","og_type":"article","og_title":"Counting with Focus for Free - Cees Snoek","og_description":"The ICCV paper &#8220;Counting with Focus for Free&#8221; by Zenglin Shi, Pascal Mettes and Cees Snoek is now available. 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