{"id":10969,"date":"2022-09-25T16:00:34","date_gmt":"2022-09-25T10:30:34","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/"},"modified":"2022-09-25T16:00:34","modified_gmt":"2022-09-25T10:30:34","slug":"solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/","title":{"rendered":"[Solved] How to cut image into pieces, randomize them and put all together"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-28147578\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"28147578\" data-parentid=\"28142106\" data-score=\"5\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>You can do it like this with <code>bash<\/code> and <code>ImageMagick<\/code>:<\/p>\n<pre><code>#!\/bin\/bash\nconvert -crop 16x16@ input.jpg tile.jpg\nmontage -geometry +0+0 $(ls tile*jpg | awk 'BEGIN{srand()}{print rand() \"\\t\" $0}' | sort -n | cut -f2-) output.png\n\n# Remember to remove the tile*jpg before you do another one :-)\n# rm tile*jpg\n<\/code><\/pre>\n<p>Basically as you suggest, using <code>-crop<\/code> and <code>montage<\/code>. The bit inside <code>$()<\/code> is <em>process substitution<\/em> and it takes the result of running the process inside the parentheses and puts it into the <code>montage<\/code> command. It lists all files called <code>tile*jpg<\/code> and pipes that into <code>awk<\/code> to append a random number to the front of each file, then it sorts by the random number and chops it off.<\/p>\n<p>So it makes this:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-How-to-cut-image-into-pieces-randomize-them-and.jpg\" alt=\"enter image description here\"><\/p>\n<p>into this:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-How-to-cut-image-into-pieces-randomize-them-and.png\" alt=\"enter image description here\"><\/p>\n<p>I have been experimenting further with this (i.e. <em>playing around<\/em>) and I see you can get white lines and gaps between the tiles. I am not sure if these bother you, but if they do, a possible solution is to note the original image geometry and then resize it to an exact multiple of your 16&#215;16 tile-size. Then proceed as before, and resize by the odd 0-15 pixels at the end, back to the original size.<\/p>\n<p>If that is necessary, I came up with this:<\/p>\n<pre><code>#!\/bin\/bash\n# Get original image geometry\noriggeom=$(identify -format %g input.jpg)\necho $origgeom\n# Calculate new geometry as exact multiple of tilesize\nnewgeom=$(convert input.jpg -format \"%[fx:int(w\/16)*16]x%[fx:int(h\/16)*16]\" info:)\necho $newgeom\n\n# Resize to new geometry and tile\nconvert input.jpg -resize $newgeom -crop 16x16@ tile.jpg\n\n# Rebuild in random order then correct geometry\nmontage -background none -geometry +0+0 $(ls tile*jpg | awk 'BEGIN{srand()}{print rand() \"\\t\" $0}' | sort -n | cut -f2-) JPG:- | convert JPG: -resize ${origgeom}! output.jpg\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/1664101834_144_Solved-How-to-cut-image-into-pieces-randomize-them-and.jpg\" alt=\"enter image description here\"><\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How to cut image into pieces, randomize them and put all together <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] You can do it like this with bash and ImageMagick: #!\/bin\/bash convert -crop 16&#215;16@ input.jpg tile.jpg montage -geometry +0+0 $(ls tile*jpg | awk &#8216;BEGIN{srand()}{print rand() &#8220;\\t&#8221; $0}&#8217; | sort -n | cut -f2-) output.png # Remember to remove the tile*jpg before you do another one \ud83d\ude42 # rm tile*jpg Basically as you suggest, using &#8230; <a title=\"[Solved] How to cut image into pieces, randomize them and put all together\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/\" aria-label=\"More on [Solved] How to cut image into pieces, randomize them and put all together\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1042,1192],"class_list":["post-10969","post","type-post","status-publish","format-standard","hentry","category-solved","tag-bash","tag-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] How to cut image into pieces, randomize them and put all together - JassWeb<\/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:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to cut image into pieces, randomize them and put all together - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You can do it like this with bash and ImageMagick: #!\/bin\/bash convert -crop 16x16@ input.jpg tile.jpg montage -geometry +0+0 $(ls tile*jpg | awk &#039;BEGIN{srand()}{print rand() &quot;t&quot; $0}&#039; | sort -n | cut -f2-) output.png # Remember to remove the tile*jpg before you do another one :-) # rm tile*jpg Basically as you suggest, using ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-25T10:30:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-How-to-cut-image-into-pieces-randomize-them-and.jpg\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] How to cut image into pieces, randomize them and put all together\",\"datePublished\":\"2022-09-25T10:30:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/\"},\"wordCount\":189,\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"image\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/09\/Solved-How-to-cut-image-into-pieces-randomize-them-and.jpg\",\"keywords\":[\"bash\",\"image\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/\",\"url\":\"https:\/\/jassweb.com\/solved\/solved-how-to-cut-image-into-pieces-randomize-them-and-put-all-together\/\",\"name\":\"[Solved] How to cut image into pieces, randomize them and put all together - 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