Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.datemas.de!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed1a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.058 X-Spam-Evidence: '*H*': 0.89; '*S*': 0.01; 'subject:Python': 0.06; 'subject:using': 0.09; 'cc:addr:python-list': 0.11; 'python': 0.11; 'suggest': 0.14; 'check.': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'pil.': 0.16; 'wrote:': 0.18; 'library': 0.18; 'trying': 0.19; 'cc:addr:python.org': 0.22; 'cc:2**0': 0.24; 'sort': 0.25; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'message-id:@mail.gmail.com': 0.30; 'easier': 0.31; 'extract': 0.31; 'libraries': 0.31; 'could': 0.34; 'problem': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'method': 0.36; 'area': 0.37; "couldn't": 0.39; 'more': 0.64; '20,': 0.68; 'clip': 0.84; 'hard.': 0.84; 'images?': 0.84; 'job;': 0.84; 'absolutely': 0.87; 'subject:Pair': 0.91; 'to:none': 0.92 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=0PLxIt5ilwLaiBtUDYHaLTcUcZTgvi68UIx6g0jMKs8=; b=iXHOk6fLVAKkZqLwUNe9g5oaydwljviv2jgEIEOBGWRjZyucOTw6FZ+8UW3bfQVz+e jKfFjFfsC1CUR568YWVgTlFdX/2lI3eJjssyYiuax2fkxMAXtTLvVKUCyPMf6ZheX+Ez Egvd1tGIvBcPs7D9bS3Fc9juLqlSCsTai0uHFc/9S4dxkg4Y7cAtpKitqENcRC+Dcap9 3QiFgheOMUXiCUDIqNjYHN7MIc7VCdvgUCEKUo15uIUOsHF3ZaBxilCoHXHIl5Am/fzj DNc3ge9cPu1ZOU+okbh9ZmuFh2NX/IY4KcDwfRoZ4Kuw6XmUiWzxeFsZeSMNtLKzTn/v qAOQ== MIME-Version: 1.0 X-Received: by 10.220.69.72 with SMTP id y8mr1023469vci.21.1400548625111; Mon, 19 May 2014 18:17:05 -0700 (PDT) In-Reply-To: <96220021-03b7-4016-bbf1-f660b9590dab@googlegroups.com> References: <96220021-03b7-4016-bbf1-f660b9590dab@googlegroups.com> Date: Tue, 20 May 2014 11:17:05 +1000 Subject: Re: Clip Raster Image Pair by Overlapping Area using Python From: Chris Angelico Cc: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 12 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1400548633 news.xs4all.nl 2852 [2001:888:2000:d::a6]:41734 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:71781 On Tue, May 20, 2014 at 11:05 AM, wrote: > I have a set of aerial images which I am trying to clip by their overlapping areas, for use in a more involved program I am writing with PIL. > > What would be the best method with Python to extract the overlapping area from a pair of images? I know there are libraries out there that could do this, but I couldn't find any so far. > The problem is that they won't absolutely perfectly match, so you need some sort of similarity check. That's hard - very hard. I suggest you find a stand-alone program that will do that part of the job; it'll be easier than finding a Python library for it. ChrisA