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the proportionBitmap cutedImage = CutImage (srcImage, newX, newY, newW, newH );// Saved fileBitmap B = new Bitmap (iWidth, iHeight );Graphics g = Graphics. FromImage (B );// Quality of interpolation algorithmsG. InterpolationMode = InterpolationMode. Default;G. DrawImage (cutedImage, new Rectangle (0, 0, iWidth, iHeight), new Rectangle (0, 0, cutedImage. Width, cutedImage. Height), GraphicsUnit. Pixel );G. Dispose ();Return B;}Catch (Exception){Return null;}} 4.jpeg image quality
, adjust the ordinate that begins to intercept Newy = math.abs (int. Parse (Math.Round (double) srcimage.height-(double) NEWH)/2). ToString ())); } Obtaining a proportionate temporary document Bitmap cutedimage = Cutimage (Srcimage, Newx, Newy, NEWW, NEWH); Files saved to Bitmap B = new Bitmap (iwidth, iheight); Graphics g = graphics.fromimage (b); The quality of interpolation algorithm G.interpolationmode = Interpolationmode.default; G.drawimage (Cutedimage, New Rectangle (0, 0, iwidt
proportionBitmap cutedImage = CutImage (srcImage, newX, newY, newW, newH );// Saved fileBitmap B = new Bitmap (iWidth, iHeight );Graphics g = Graphics. FromImage (B );// Quality of interpolation algorithmsG. InterpolationMode = InterpolationMode. Default;G. DrawImage (cutedImage, new Rectangle (0, 0, iWidth, iHeight), new Rectangle (0, 0, cutedImage. Width, cutedImage. Height), GraphicsUnit. Pixel );G. Dispose ();Return B;}Catch (Exception){Return null;}} 4.jpeg image quality
Before introducing image compression encoding, consider the following question: why compression? You don't need to answer this question. Because the amount of data in the image information is amazing. For example, we can see that the data volume of an A4 (210mm * 297mm) image scanned with a medium-resolution (300 dpi) Scanner Based on the actual color? Let's calculate: there are a total of (300*210/25 .4) *
You can browse the bold section first One, the common compression file *.zip | Zip program compresses packaged files; (very common, but because it does not contain document name encoding information, cross-platform may be garbled)*.rar | The WinRAR process compresses packaged files; (Common on Windows, but commercial software.) ）*.gz | Gzip program compressed files; (Linux is currently the most widely used
for compression, decompression, and dual-use. This is not necessarily the case for each compression and decompression program .) Therefore, if you remember the-d option, you do not need to remember the uncompress command. Uncompress generally uses one of the following options: -V shows the progress during the decompression process. Similarly, these options can be added to compress-d, with the same effect.
This article mainly describes the new feature of DB2 V9.7 index compression, Which is used correctly. DB2 V9.1 database introduces the row compression technology. When the data volume in our system is large, when I/O requirements exceed the capacity provided by the disk system, that is, I/O becomes the bottleneck of the system), row compression can effectively re
The Sequncefile compression type (Compression type) is divided into three none,record,block, specified by the configuration item Io.seqfile.compression.type: None, do not compress records is not compressed RECORD, Compress values only, each separately. Each record is compressed once for value BLOCK, Compress sequences of records together in blocks. Block compression
I. SummaryThis article summarizes how to enable gzip compression for Web sites that are hosted by IIS, reducing the size of the Web network transfer and increasing the speed at which users display pages.Two. Preface.The knowledge points of this paper are collected from the Internet, mainly from the Chinese wiki. Gzip is a key item when using YSlow to detect which optimizations are enabled on the site. Starting GIP
[Translated from mos] a thorough understanding of rman compression, mos Article rman Compression A thorough understanding of rman CompressionSource:A Complete Understanding of RMAN Compression (Document ID 563427.1) Applicable:Oracle Database-Enterprise Edition-Version 8.1.7.4 to 11.2.0.3 [Release 8.1.7 to 11.2]Information in this document applies to any platform
The gzip module of Nginx is built-in. Add the following configuration in http:Gzip on;Gzip_min_length 5 k;Gzip_buffers 4 16 k;Gzip_http_version 1.0;Gzip_comp_level 3;Gzip_types text/plain application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png;Gzip_vary on;Note:Gzip on | off# Default value: gzip off# Enable or disable the gzip moduleGzip_static on | off# Nginx static file processing module# This module can read pre-compressed gz fi
IIS compression is not a new technology, but for websites, IIS compression can play a major role. After the IIS compression function is enabled on the IIS server, before the IIS server sends the page content to the browser, It compresses the content on the server and then sends the compressed data, after the browser receives the data, it automatically decompress
"This paper presents a comprehensive overview of the depth of neural network compression methods, mainly divided into parameter pruning and sharing, low rank decomposition, migration/compression convolution filter and knowledge refining, this paper on the performance of each type of methods, related applications, advantages and shortcomings of the original analysis. ” Large-scale neural networks have a la
-family:verdana;" >GNUNBSP;LGPLNBSP, and restricted license. For more information on licensing, see: 7-zip license . You can use 7-zip on any computer , including computers that are used for commercial purposes, and do not donate or pay 7-zip without prejudice to your use. Let 's Compare the 7-zip with the usual compression software. Software name Mozilla Firefox Google Earth 161 Files15,684,168 bytes
Linux under the compression, decompression command a variety of, unlike in Windows next WinRAR fight all over the world without rival, exclusively. rar. zip format.For example, the commonly used tar tar.gz tar.bz2 under Linux. Z and so on. The CPU time and compression ratios of each compression and decompression method vary greatly. I would like to list here, I h
Label:Original: Anatomy of SQL Server 13th integers storage format in row compression and page compression (translated)Anatomy of SQL Server 13th integers storage format in row compression and page compression (translated)http://improve.dk/the-anatomy-of-row-amp-page-compressed-integers/When resolving orcamdf support f
One, what is gzip gzip is a data format that, by default, compresses the data section using only the deflate algorithm; Gzip is a popular file compression algorithm and is now widely used, especially on Linux platforms. When applying gzip compression to a plain text file, the effect is very noticeable and can reduce file size by more than 70%. This depends on the content in the file. Using the GZIP modul
Before using compression, we can estimate the effect of compression. Dbms_comp_advisor can be used before 11gr2. The specific code is provided in the attachment. You only need to execute two files, dbmscomp. SQL and prvtcomp. plb, and then use the DBMS_COMP_ADVISOR.getratio stored procedure. It is not described in detail. SQLset Before using compression, we can e
[Translated from mos] differences between basic table compression and advanced compression in oracle databasesDifferences between basic table compression and advanced compression,Extracted from the mos Article Difference Between Basic Table Compression And Advanced
Gzip compression algorithm: the basic principle of gzip Compression Algorithm Gzip Compression Algorithm : Basic Principles of gzip compression algorithms 1. Basic principles of gzip Compression Algorithms Gzip first uses a variant of the lz77 algorithm to compre
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