libjpeg

导语 在《从“软件”到“服务”——【对象存储】的发展历程（上）》中，我们和大家在对象存储大规模普及之前，大量的数据存储和处理是怎么实现的。但这些方案大都专注于解决其中一类问题，缺少足够的普适性。那么对象存储出现后，究竟解决了什么问题？优势又为何呢？ 1.软件 V.S 服务 跟上一篇提到的各个软件相比，对象存储与之最大的区别不在于实现的机制，而在于形态从软件到服务的一个大飞跃。在这儿我想用一个可能不太恰当的比喻来说这事——传统的体重计。 不管是电子的还是机械的，他只是一个工具，我们评价的标准更多是价格、准确度、易用性、量程。而互联网的体重计，能帮你记录你的体重变化曲线，你关心的可能更多是数据联动、可视化、以及根据你的体重给出的建议。当然，如果你真的对减肥有强烈的需求，那么找一个合适的教练，由教练来指导你的减肥流程才合适，而互联网体重计只是教练手中的一个工具而已。 服务跟软件相比，有几个大的不同点： 首先是自由演化——对象存储的客户可以只关心SLA，并不关心你实现SLA的手段，所以演化更自由； 其次是使用服务完全不用关心运维问题——运维问题完全交给服务提供商来解决； 最后是采用服务形态后，业务的架构方式更灵活——比如控制面和数据面分离更轻松等。 作为一个部署在云端的服务，它的接口和实现是分离的，也就是说我可以在保持接口不变的情况下持续演化实现。我们可以想象一下第一次在 AWS S3

I'm running a Django app inside a virtualenv on Ubuntu with NGINX/FastCGI and trying to upload a JPG image to the Django admin app. I'm getting this error: "Upload a valid image. The file you uploaded was either not an image or a corrupted image." I can upload a GIF image, so it's only JPEG that's causing the problem. Here's what I've tried so far: 1) Install libjpeg62-dev before PIL pip uninstall pil sudo apt-get libjpeg62-dev pip install pil At the end of the PIL install, I see: PIL 1.1.7 SETUP SUMMARY -------------------------------------------------------------------- version 1.1.7

This question is related to another question I asked here: Error reading image using jpeg_read from Matlab's jpeg toolbox I've been trying to compile the jpeg toolbox under Windows 7 (using the commands Shai provided in the answer to the question I posted), but I get the following error: jpeg_read.c(52) : fatal error C1083: Cannot open include file: 'jerror.h': No such file or directory which I believe happened because I haven't built libjpeg. I tried to build libjpeg6b like jpegtoolbox's README says, but I couldn't find a clear guide on how to do it on Windows with visual studio 2010 (and

On my development machine (Linux) I have not set LD_LIBRARY_PATH at all, as the libraries I'm using are either in default directories or I've added them to ld.conf . But when I'm using Eclipse, my LD_LIBRARY_PATH is set to: "/usr/lib/jvm/java-6-openjdk/jre/lib/i386/client: /usr/lib/jvm/java-6-openjdk/jre/lib/i386: /usr/lib/xulrunner-1.9.2.17: /usr/lib/xulrunner-1.9.2.17" (added line breaks for readability). I don't mind xulrunner ones, but the OpenJDK causes my apps to load /usr/lib/jvm/java-6-openjdk/jre/lib/i386/libjpeg.so instead of /usr/lib/libjpeg.so Which lead to subsequent fail, as the

I'm trying to install PIL on Snow Leopard, using Python 2.6.1, GCC 4.2.1, PIL 1.1.7, and have tried with both libjpeg6b and libjpeg7 -- nothing works. I've cleared out every trace of libjpeg/pil/zlib from fink, tried various compiler options, etc. and used http://jetfar.com/libjpeg-and-python-imaging-pil-on-snow-leopard/ and http:// www.brambraakman.com/blog/comments/installing_pil_in_snow_leopard_jpeg_resync_to_restart_error/ (not a link because StOv only lets me post one...) 4 bits of potentially useful information: OTOOL does not show libjpeg as a dependency otool -L /Library/Python/2.6

I'm trying to use libexif to write exif data into a jpeg file. I'm pretty much following the example provided with it. I can understand all the Exif data blocks being written and everything, but how do I load the jpeg data like they suggested? (using libjpeg). I couldn't find a function that would directly let me import the jpeg as char. My code works fine if I include a dummy jpg with it like shown below. /* * write-exif.c * * Placed into the public domain by Daniel Fandrich * * Create a new EXIF data block and write it into a JPEG image file. * * The JPEG image data used in this example is