如何在Java中的特定位置创建具有特定高度和宽度的图像文件

Question

I am implementing the project where i am detecting rectangular object from image. I want to store that part to memory. As the height and width every time i get is not predictable, i am not getting how to store that part of matrix by creating the image file at sd card that will exactly occupy the rectangular object

how can i create image eg . demo.jpg in //temp/ of size 90x50

Answer 1

use php GD function. use code like below

header ('Content-Type: image/png');
$im = @imagecreatetruecolor(120, 20)
  or die('Cannot Initialize new GD image stream');
$text_color = imagecolorallocate($im, 233, 14, 91);
imagestring($im, 1, 5, 5,  'A Simple Text String', $text_color);
imagepng($im);
imagedestroy($im);

take help from http://php.net/manual/en/function.set-error-handler.php