我们经常听到有人困惑于图像的像素值储存的是什么信息,以及如何获取所需的值。这里我们总结以下几个概念。数字量化值(DigitalNumber:DN)像素值的通用术语是数字量化值或DN值,它通常被用来描述还没有校准到具有意义单位的像素值。如果你只是想看一个图像,和不打算解释像素值的物理意义,那么就可以以...
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其他好文 时间:
2014-08-20 22:28:42
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310
declare @time datetimedeclare @ms intset @time= getdate()select ID,name from (select row_number() over(order by ID) as rowNum,* from dbo.testb) as t ....
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数据库 时间:
2014-08-20 21:00:33
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191
基础介绍Lua是一种动态类型的语言。在语言中没有类型定义的语法,每个值都带有其自身的类型信息。在Lua中有8种基本类型,分别是:nil(空)类型boolean(布尔)类型number(数字)类型string(字符串)类型userdata(自定义类型)function(函数)类型thread(线程)类...
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其他好文 时间:
2014-08-20 20:58:12
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Problem 28
Starting with the number 1 and moving to the right in a clockwise direction a 5 by 5 spiral is formed as follows:
21 22 23 24 25
20 7 8 9 10
19 6 1 2 11
18 5 4 3 12
17 16...
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其他好文 时间:
2014-08-20 18:04:12
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Problem Description
Number theory is interesting, while this problem is boring.
Here is the problem. Given an integer sequence a1, a2, …, an, let S(i) = {j|1j is a multiple of ai}. If S(i) is no...
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2014-08-20 16:34:02
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184
提交了几次都被feedback,以下均为本人碰到过得问题,希望对大家解决提交问题有帮助
Number one:PLA 3.3.12
We found your app uses the iOS Advertising Identifier but does not include ad functionality. This does not comply with the
te...
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移动开发 时间:
2014-08-20 16:28:33
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444
A squarenumber is an integer number whose square root is also an integer. For example1, 4, 81 are some square numbers. Given two numbers a and b you will have tofind out how many square numbers are th...
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其他好文 时间:
2014-08-20 16:28:22
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1. 生成唯一的ID uniqid();//不加前缀,生成的字串是13位,根据当前微妙的时间戳2. 随机函数 /** * 生成指定位数的随机字符串 * * @param int $len 随机字符串长度 * @param bool $include_number 是否允许包含数字 *...
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Web程序 时间:
2014-08-20 16:07:42
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241
Description
Farmer John's cows have discovered that the clover growing along the ridge of the hill (which we can think of as a one-dimensional number line) in his field is particularly good.
Fa...
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其他好文 时间:
2014-08-20 14:10:52
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225
Boring Sum
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)
Total Submission(s): 446 Accepted Submission(s): 227
Problem Description
Number theory is in...
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其他好文 时间:
2014-08-20 14:10:02
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203