StackOverflow2013

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Id
18497100
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2013-08-28T19:56:06.727
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2015-02-12T12:38:38.560
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2015-02-12T12:38:38.560
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18494403
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2
Score
6
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text
Body
<p>I saw you've commented that you want also to resize the cropped image to a smaller size right?</p> <pre><code>Image resizeImg(Image img, int width) { // 4:3 Aspect Ratio. You can also add it as parameters double aspectRatio_X = 4; double aspectRatio_Y = 3; double targetHeight = Convert.ToDouble(width) / (aspectRatio_X / aspectRatio_Y); img = cropImg(img); Bitmap bmp = new Bitmap(width, (int)targetHeight); Graphics grp = Graphics.FromImage(bmp); grp.DrawImage(img, new Rectangle(0, 0, bmp.Width, bmp.Height), new Rectangle(0, 0, img.Width, img.Height), GraphicsUnit.Pixel); return (Image)bmp; } Image cropImg(Image img) { // 4:3 Aspect Ratio. You can also add it as parameters double aspectRatio_X = 4; double aspectRatio_Y = 3; double imgWidth = Convert.ToDouble(img.Width); double imgHeight = Convert.ToDouble(img.Height); if (imgWidth / imgHeight > (aspectRatio_X / aspectRatio_Y)) { double extraWidth = imgWidth - (imgHeight * (aspectRatio_X / aspectRatio_Y)); double cropStartFrom = extraWidth / 2; Bitmap bmp = new Bitmap((int)(img.Width - extraWidth), img.Height); Graphics grp = Graphics.FromImage(bmp); grp.DrawImage(img, new Rectangle(0, 0, (int)(img.Width - extraWidth), img.Height), new Rectangle((int)cropStartFrom, 0, (int)(imgWidth - extraWidth), img.Height), GraphicsUnit.Pixel); return (Image)bmp; } else return null; } private void button1_Click(object sender, EventArgs e) { pictureBox2.Image = resizeImg(pictureBox1.Image, 60); } </code></pre> <p>Use the resize method and provide width as parameter. No need to add height because it is done by the crop method.</p>
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1. POcrop image to 4:3 aspect ratio c#
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