cvb.netasc的简单介绍

vb.net 有没有++(增1)和--(减1)运算符？

++ 是 c#的用法

vb.net vs c# 详细的Operators运算符区别

vb.net

=====================

Comparison

= = =

Arithmetic

+ - * /

Mod

\ (integer division)

^ (raise to a power)

Assignment

= += -= *= /= \= ^= = = =

Bitwise

And Or Xor Not

Logical

AndAlso OrElse And Or Xor Not

Note: AndAlso and OrElse perform short-circuit logical evaluations

String Concatenation

c#

=====================

Comparison

== = = !=

Arithmetic

+ - * /

% (mod)

/ (integer division if both operands are ints)

Math.Pow(x, y)

Assignment

= += -= *= /= %= = |= ^= = = ++ --

Bitwise

| ^ ~

Logical

|| | ^ !

Note: and || perform short-circuit logical evaluations

String Concatenation

+

相关问答

Q1: 各种媒体数据以 base64 编码方式直接嵌入网页中的写法

png 图片:

img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABlBMVEUAAAD///+l2Z/dAAAAM0lEQVR4nGP4/5/h/1+G/58ZDrAz3D/McH8yw83NDDeNGe4Ug9C9zwz3gVLMDA/A6P9/AFGGFyjOXZtQAAAAAElFTkSuQmCC"/

wav 文件:

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或:

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更多格式:

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3gp video/3gpp

aab application/x-authoware-bin

aam application/x-authoware-map

aas application/x-authoware-seg

ai application/postscript

aif audio/x-aiff

aifc audio/x-aiff

aiff audio/x-aiff

als audio/X-Alpha5

amc application/x-mpeg

ani application/octet-stream

asc text/plain

asd application/astound

asf video/x-ms-asf

asn application/astound

asp application/x-asap

asx video/x-ms-asf

au audio/basic

avb application/octet-stream

avi video/x-msvideo

awb audio/amr-wb

bcpio application/x-bcpio

bin application/octet-stream

bld application/bld

bld2 application/bld2

bmp application/x-MS-bmp

bpk application/octet-stream

bz2 application/x-bzip2

cal image/x-cals

ccn application/x-cnc

cco application/x-cocoa

cdf application/x-netcdf

cgi magnus-internal/cgi

chat application/x-chat

class application/octet-stream

clp application/x-msclip

cmx application/x-cmx

co application/x-cult3d-object

cod image/cis-cod

cpio application/x-cpio

cpt application/mac-compactpro

crd application/x-mscardfile

csh application/x-csh

csm chemical/x-csml

csml chemical/x-csml

css text/css

cur application/octet-stream

dcm x-lml/x-evm

dcr application/x-director

dcx image/x-dcx

dhtml text/html

dir application/x-director

dll application/octet-stream

dmg application/octet-stream

dms application/octet-stream

doc application/msword

dot application/x-dot

dvi application/x-dvi

dwf drawing/x-dwf

dwg application/x-autocad

dxf application/x-autocad

dxr application/x-director

ebk application/x-expandedbook

emb chemical/x-embl-dl-nucleotide

embl chemical/x-embl-dl-nucleotide

eps application/postscript

eri image/x-eri

es audio/echospeech

esl audio/echospeech

etc application/x-earthtime

etx text/x-setext

evm x-lml/x-evm

evy application/x-envoy

exe application/octet-stream

fh4 image/x-freehand

fh5 image/x-freehand

fhc image/x-freehand

fif image/fif

fm application/x-maker

fpx image/x-fpx

fvi video/isivideo

gau chemical/x-gaussian-input

gca application/x-gca-compressed

gdb x-lml/x-gdb

gif image/gif

gps application/x-gps

gtar application/x-gtar

gz application/x-gzip

hdf application/x-hdf

hdm text/x-hdml

hdml text/x-hdml

hlp application/winhlp

hqx application/mac-binhex40

htm text/html

html text/html

hts text/html

ice x-conference/x-cooltalk

ico application/octet-stream

ief image/ief

ifm image/gif

ifs image/ifs

imy audio/melody

ins application/x-NET-Install

ips application/x-ipscript

ipx application/x-ipix

it audio/x-mod

itz audio/x-mod

ivr i-world/i-vrml

j2k image/j2k

jad text/vnd.sun.j2me.app-descriptor

jam application/x-jam

jar application/java-archive

jnlp application/x-java-jnlp-file

jpe image/jpeg

jpeg image/jpeg

jpg image/jpeg

jpz image/jpeg

js application/x-javascript

jwc application/jwc

kjx application/x-kjx

lak x-lml/x-lak

latex application/x-latex

lcc application/fastman

lcl application/x-digitalloca

lcr application/x-digitalloca

lgh application/lgh

lha application/octet-stream

lml x-lml/x-lml

lmlpack x-lml/x-lmlpack

lsf video/x-ms-asf

lsx video/x-ms-asf

lzh application/x-lzh

m13 application/x-msmediaview

m14 application/x-msmediaview

m15 audio/x-mod

m3u audio/x-mpegurl

m3url audio/x-mpegurl

ma1 audio/ma1

ma2 audio/ma2

ma3 audio/ma3

ma5 audio/ma5

man application/x-troff-man

map magnus-internal/imagemap

mbd application/mbedlet

mct application/x-mascot

mdb application/x-msaccess

mdz audio/x-mod

me application/x-troff-me

mel text/x-vmel

mi application/x-mif

mid audio/midi

midi audio/midi

mif application/x-mif

mil image/x-cals

mio audio/x-mio

mmf application/x-skt-lbs

mng video/x-mng

mny application/x-msmoney

moc application/x-mocha

mocha application/x-mocha

mod audio/x-mod

mof application/x-yumekara

mol chemical/x-mdl-molfile

mop chemical/x-mopac-input

mov video/quicktime

movie video/x-sgi-movie

mp2 audio/x-mpeg

mp3 audio/x-mpeg

mp4 video/mp4

mpc application/vnd.mpohun.certificate

mpe video/mpeg

mpeg video/mpeg

mpg video/mpeg

mpg4 video/mp4

mpga audio/mpeg

mpn application/vnd.mophun.application

mpp application/vnd.ms-project

mps application/x-mapserver

mrl text/x-mrml

mrm application/x-mrm

ms application/x-troff-ms

mts application/metastream

mtx application/metastream

mtz application/metastream

mzv application/metastream

nar application/zip

nbmp image/nbmp

nc application/x-netcdf

ndb x-lml/x-ndb

ndwn application/ndwn

nif application/x-nif

nmz application/x-scream

nokia-op-logo image/vnd.nok-oplogo-color

npx application/x-netfpx

nsnd audio/nsnd

nva application/x-neva1

oda application/oda

oom application/x-AtlasMate-Plugin

pac audio/x-pac

pae audio/x-epac

pan application/x-pan

pbm image/x-portable-bitmap

pcx image/x-pcx

pda image/x-pda

pdb chemical/x-pdb

pdf application/pdf

pfr application/font-tdpfr

pgm image/x-portable-graymap

pict image/x-pict

pm application/x-perl

pmd application/x-pmd

png image/png

pnm image/x-portable-anymap

pnz image/png

pot application/vnd.ms-powerpoint

ppm image/x-portable-pixmap

pps application/vnd.ms-powerpoint

ppt application/vnd.ms-powerpoint

pqf application/x-cprplayer

pqi application/cprplayer

prc application/x-prc

proxy application/x-ns-proxy-autoconfig

ps application/postscript

ptlk application/listenup

pub application/x-mspublisher

pvx video/x-pv-pvx

qcp audio/vnd.qcelp

qt video/quicktime

qti image/x-quicktime

qtif image/x-quicktime

r3t text/vnd.rn-realtext3d

ra audio/x-pn-realaudio

ram audio/x-pn-realaudio

rar application/x-rar-compressed

ras image/x-cmu-raster

rdf application/rdf+xml

rf image/vnd.rn-realflash

rgb image/x-rgb

rlf application/x-richlink

rm audio/x-pn-realaudio

rmf audio/x-rmf

rmm audio/x-pn-realaudio

rmvb audio/x-pn-realaudio

rnx application/vnd.rn-realplayer

roff application/x-troff

rp image/vnd.rn-realpix

rpm audio/x-pn-realaudio-plugin

rt text/vnd.rn-realtext

rte x-lml/x-gps

rtf application/rtf

rtg application/metastream

rtx text/richtext

rv video/vnd.rn-realvideo

rwc application/x-rogerwilco

s3m audio/x-mod

s3z audio/x-mod

sca application/x-supercard

scd application/x-msschedule

sdf application/e-score

sea application/x-stuffit

sgm text/x-sgml

sgml text/x-sgml

sh application/x-sh

shar application/x-shar

shtml magnus-internal/parsed-html

shw application/presentations

si6 image/si6

si7 image/vnd.stiwap.sis

si9 image/vnd.lgtwap.sis

sis application/vnd.symbian.install

sit application/x-stuffit

skd application/x-Koan

skm application/x-Koan

skp application/x-Koan

skt application/x-Koan

slc application/x-salsa

smd audio/x-smd

smi application/smil

smil application/smil

smp application/studiom

smz audio/x-smd

snd audio/basic

spc text/x-speech

spl application/futuresplash

spr application/x-sprite

sprite application/x-sprite

spt application/x-spt

src application/x-wais-source

stk application/hyperstudio

stm audio/x-mod

sv4cpio application/x-sv4cpio

sv4crc application/x-sv4crc

svf image/vnd

svg image/svg-xml

svh image/svh

svr x-world/x-svr

swf application/x-shockwave-flash

swfl application/x-shockwave-flash

t application/x-troff

tad application/octet-stream

talk text/x-speech

tar application/x-tar

taz application/x-tar

tbp application/x-timbuktu

tbt application/x-timbuktu

tcl application/x-tcl

tex application/x-tex

texi application/x-texinfo

texinfo application/x-texinfo

tgz application/x-tar

thm application/vnd.eri.thm

tif image/tiff

tiff image/tiff

tki application/x-tkined

tkined application/x-tkined

toc application/toc

toy image/toy

tr application/x-troff

trk x-lml/x-gps

trm application/x-msterminal

tsi audio/tsplayer

tsp application/dsptype

tsv text/tab-separated-values

tsv text/tab-separated-values

ttf application/octet-stream

ttz application/t-time

txt text/plain

ult audio/x-mod

ustar application/x-ustar

uu application/x-uuencode

uue application/x-uuencode

vcd application/x-cdlink

vcf text/x-vcard

vdo video/vdo

vib audio/vib

viv video/vivo

vivo video/vivo

vmd application/vocaltec-media-desc

vmf application/vocaltec-media-file

vmi application/x-dreamcast-vms-info

vms application/x-dreamcast-vms

vox audio/voxware

vqe audio/x-twinvq-plugin

vqf audio/x-twinvq

vql audio/x-twinvq

vre x-world/x-vream

vrml x-world/x-vrml

vrt x-world/x-vrt

vrw x-world/x-vream

vts workbook/formulaone

wav audio/x-wav

wax audio/x-ms-wax

wbmp image/vnd.wap.wbmp

web application/vnd.xara

wi image/wavelet

wis application/x-InstallShield

wm video/x-ms-wm

wma audio/x-ms-wma

wmd application/x-ms-wmd

wmf application/x-msmetafile

wml text/vnd.wap.wml

wmlc application/vnd.wap.wmlc

wmls text/vnd.wap.wmlscript

wmlsc application/vnd.wap.wmlscriptc

wmlscript text/vnd.wap.wmlscript

wmv audio/x-ms-wmv

wmx video/x-ms-wmx

wmz application/x-ms-wmz

wpng image/x-up-wpng

wpt x-lml/x-gps

wri application/x-mswrite

wrl x-world/x-vrml

wrz x-world/x-vrml

ws text/vnd.wap.wmlscript

wsc application/vnd.wap.wmlscriptc

wv video/wavelet

wvx video/x-ms-wvx

wxl application/x-wxl

x-gzip application/x-gzip

xar application/vnd.xara

xbm image/x-xbitmap

xdm application/x-xdma

xdma application/x-xdma

xdw application/vnd.fujixerox.docuworks

xht application/xhtml+xml

xhtm application/xhtml+xml

xhtml application/xhtml+xml

xla application/vnd.ms-excel

xlc application/vnd.ms-excel

xll application/x-excel

xlm application/vnd.ms-excel

xls application/vnd.ms-excel

xlt application/vnd.ms-excel

xlw application/vnd.ms-excel

xm audio/x-mod

xml text/xml

xmz audio/x-mod

xpi application/x-xpinstall

xpm image/x-xpixmap

xsit text/xml

xsl text/xml

xul text/xul

xwd image/x-xwindowdump

xyz chemical/x-pdb

yz1 application/x-yz1

z application/x-compress

zac application/x-zaurus-zac

zip application/zip

Q2: CVB是什么

看了一下是一款图象处理软件CVB 提供强大的功能优势：

1）30多个软件开发包能灵活、有效的完成图像处理任务。

2) 集合了来自于各个部门生产商生产的最重要的图像处理部件（相机、图像采集卡，光源）和技术（Camera Link, FireWire, USB, Gigabit Ethernet etc.）的优化驱动程序。

3) CVB 支持来自于众多生产厂家的标准的和特制相机（高分辨率、高速、线扫描相机等等）。

由于有了这些特性，CVB可应用于许多不同行业。从化工、制药到机械工程到电子、医学，电信，可能应用的行业涵盖极为广泛。

图像处理的快捷通道

从图像采集到图像处理本身到最终的决策阶段，CVB满足基于工业图像处理系统的检测任务需求的任何功能函数。对于某项给定任务的特别应用可在编程环境下生成并传给目标系统。

CVB用户的两种编程环境：一方面，可用普通的高级语言编译器如：

Microsoft Visual Basic

Microsoft Visual C++

Borland Delphi

VB.NET

VC.NET

C#.NET 和

Borland C++-Builder

另一方面，用户可用Stemmer Imaging 的用户界面 iTuition.

无论用户做哪种选择都可用以ActiveX 控件和DLLs形式存在的CVB软件开发工具，而且可在用户自己的应用中配合CVB使用上千种第三方的运算法则。

CVB可用于两种不同的技术平台。除了标准的Windows-PCs, CVB也可以在智能相机系统里实现图像处理功能。

开放式编程

过去，尽管多次尝试简化系统，但只有有经验的程序员能够配合CVB用以上提到的高级语言编译器作图像处理应用。现在，用iTuition用户界面，Stemmer Imaging提供了另外一条极大简化了的途径：用户可在经过特殊改造了的用户界面内链接由CVB提供的ActiveX控件。由于有了这种直接的用CVB创造机器视觉应用的方法，程序员不再需要掌握传统的编程语言。而且，iTuition为有经验的程序员提供多功能的脚本语言。

灵活选择目标系统

在整体构造的设计中，CVB可灵活选择目标系统并可满足任何给定图像处理应用。目前为止，大多数进行中的CVB应用都为标准的PC机设计。目前CVB支持的操作系统有WindowsNT, Windows2000和WindowsXP.

由Stemmer Imaging生产的智能相ThinkEye代表了一个特定的目标系统。基本方案包括图像管理器和三个CVB软件开发包。由此，CVB第一次可用于智能相机系统！

CVB的结构

通过更高一级编程，CVB可被进一步分为发挥不同功能的四个层面。生成的程序在适合的系统上运行（Windows-PC 或者智能相机）。

CVB的核心部分采取了一个叫做图像管理器的形式，在图表中由阴暗部分表示（Display, CVB-Image和Image Source）。CVB的图像管理器提供图像采集，硬盘驱动程序这样的基本功能。

图片

CVB四个层面的任务

硬件：

CVB的最低层面可以读出以各种格式存在的图像数据。通常从图像采集卡采集的图像以动态图像的形式存在。当然也可以从文件中输入图像数据。

为了支持图像源功能，所用硬盘的驱动程序也被安置在这一阶段。有代表性的一般是以由相关硬件生产厂商提供的程序库的形式存在，而且只支持相应的硬件。如果用户选择在这一阶段编程，他们必须因此而处理大量不同的软件包。硬件的任何变化都需要用户熟悉新的软件库，因而也需花费更多的资金，付出更多努力。传统上来讲，图像处理应用一般在这一阶段编程。

硬件抽象

在这一层CVB进行系统硬件抽象化。这样给与程序员广泛的，不止限于生产商的硬件控制功能。

在这一阶段，要被处理的图像被定义为CVB图像储存起来。无论图像是来自于面扫描线扫描相机或者仅仅只是简单的来自于硬盘，图像都会具备相同的特性。精确定义的图像使得获取图像的操作变得特别灵活有效。另外，开发商不再需要具备生产厂商特别具备的程序知识。因此对于某项不同产品，在软件开发过程中或之后转换硬件变得格外简单。

显示和处理：

任何一项图像处理工作的目的就是描述所采集图像数据并从中获取所需信息。这项工作在CVB的显示与处理阶段完成。

这一阶段不仅包括图像管理器的图像显示元件还包括对实际图像做分析的CVB软件功能包。包含着的运算数据组通过定义界面到达标准化CVB格式。这就意味着我们很容易结合运算法则灵活完成不同任务。一直在拓展中的CVB软件功能包现已包含30多个软件工具分别用于不同领域。

决策

一般来讲都把从图像中获得的信息作为决策的基础，比如某一给定部分是否满足质量需求。在这一阶段可以运用不同方法做出决策。

在很大程度上，决策的灵活性取决于所选择的标准。因此，在这一阶段CVB提供大量从模糊逻辑和统计过程控制领域提取的程序。而且，用户可自行生成并应用自己的决策工具，例如基于神经网络技术。通过这种方式，用户可以定义自己的标准来确定哪一部分有瑕疵并将它从过程中排除。

参考资料：

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