I'm using this example code to grayscale an image,but the result is not right:
I = imread('coins.png');
level = graythresh(I);
BW = im2bw(I,level);
imshow(BW)
Where to see how graythresh is actually implemented?
BTW,is there a reason for using matlab feels so alike with python?
Or is it known that graythresh doesn't work well for images with little spatial resolution(like 62*21 ones)?
package
{
import fl.controls.Button;
import fl.controls.TextInput;
public class MinRecord extends Sprite
{
private var recordBtn:Button;
private var stopBtn:Button;
private var textInput:TextInput;
...
When I run it reports:
Type was not found or was not a compile-time constant: Button.
Type was not found or was not a compile-time constant: TextInput.
Can someone point out what's wrong here?
url: articles/:id/:title
id: \d+
The above should result in :
articles/(?P<id>\d+)/(?P<title>.*)
It's used to in many mvc frameworks for routing.
How to do it in fewest lines?
A short demo is the best!
>> I=[2 1 3;3 2 4]
I =
2 1 3
3 2 4
>> I(:)
ans =
2
3
1
2
3
4
>> I(1:2)
ans =
2 3
>>
Why the first call I(:) returns a vector while the second I(1:2) doesn't which is essentially the same as I(:)?
C:\>mysql -uroot -padmin
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.0.37-community-nt-log MySQL Community Edition (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> show databases
-> ;
+--------------------+
| Database |
+--------------------+
| information_schema |
| attendance |
| fusionchartsdb |
| mysql |
| sugarcrm |
| test |
+--------------------+
6 rows in set (0.09 sec)
mysql> use mysql;
Database changed
mysql>
So I want to start a process by mysql -uroot -padmin,and in that process I want to run these statements:
show databases
use mysql
insert xxx (..) values (..)
How to do it in PHP?
Don't take the blue,red lines into account, what's the simplest solution to calculate the area of the green box unit(width and height in pixels) with MATLAB?
For linux driver development, I can refer to <linux driver development>
What about windows driver development?
UPDATE
Is there any goold books on this topic?
I've noticed that the Title or Body part is remembered if I come back to the Ask Question page by pressing Back button of my browser.
This feature is available in all browsers I tested, but doesn't exist for the forms in my own projects.
How can I approach that effect?
UPDATE
I still don't have any clue yet,but guess it that some kind of client cache enabled by http headers or javascript?
I'm trying to find an all-in-one IDE for flash, one that can deal with various flash related files.
I just read this answer and it recommends fdt, but seems fdt can only deal with scripts but not .fla ones.
Which IDE should I use so that I can use it to develop various files involved in flash developing?
This works:
int main( int argc, char *argv[])
{
....
gtk_init(&argc, &argv);
....
But this doesn't:
int WINAPI WinMain (HINSTANCE p1, HINSTANCE p2, LPSTR argv, int argc) {
....
gtk_init(&argc, &argv);
....
Can someone point out what's wrong there?
It's actually a combination of php and bash:
exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile));
I don't understand what 2>&1 & echo $! is there for?
bwlabel can be used to get disconnected objects in an image:
[L Ne] = bwlabel(image);
How to calculate the shortest path between two disconnected closed curves?
Is there a practical(not theoretical) solution?