How To resize Image Without Crop And Padding

Dr.Ajay Kashyap

9y3.1k.NET

hello friends ...

I am Uploading single Image And That image i convert in different Size Because That Image I want in 5 different Size But The Problem Is Some Images Are Crop And Padding That I Want To Avoid .....So How To Avoid It ...This All I am Doing Using Asp.Net Mvc ..

Given Below Is My Code Of Image Resizer :-

public static string UploadFile(HttpPostedFileBase file, string file_Name, int height, int width)

{

var path = Path.Combine(HttpContext.Current.Request.MapPath(UploadPath), file_Name);

file.SaveAs(path);

ResizeSettings resizeSetting = new ResizeSettings

{

Width = width,

Height = height,

Mode = FitMode.Crop,

Quality = 90

};

ImageBuilder.Current.Build(file, path, resizeSetting);

return file_Name;

}

4 Replies

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Hussam Barouqa9y ago
When you say the image size increases, do you mean the file size in bytes? If yes, you should use good compression when saving the resized image.

Though the new images might have smaller dimensions, it is possible that you are saving the new resized images with less compression than the starting image.

Note that there’s no way to know the quality factor used for the compression of the original image, but you can control the quality factor you are using when you compress the new images to achieve good file size and quality.

The next code snippet uses EncoderParameter class to specify the quality factor for saving a compressed JPEG image:

private void SaveCompressed()
{
using (Bitmap _MyBitmap = new Bitmap(@"C:\InputImage.jpg"))
{
ImageCodecInfo _MyJPGEncoder = GetEncoder(ImageFormat.Jpeg);
System.Drawing.Imaging.Encoder _MyEncoder = System.Drawing.Imaging.Encoder.Quality;
EncoderParameters _MyEncoderParameters = new EncoderParameters(1);
EncoderParameter _MyEncoderParameter = new EncoderParameter(_MyEncoder, 50L);
_MyEncoderParameters.Param[0] = _MyEncoderParameter;
_MyBitmap.Save(@"C:\OutputImage.jpg", _MyJPGEncoder, _MyEncoderParameters);
}
}
private ImageCodecInfo GetEncoder(ImageFormat format)
{
ImageCodecInfo[] _MyCodecs = ImageCodecInfo.GetImageDecoders();
foreach (ImageCodecInfo codec in _MyCodecs)
{
if (codec.FormatID == format.Guid)
{
return codec;
}
}
return null;
}

Another option you could consider is to use a professional SDK such as LEADTOOLS Imaging Pro which allows both resizing the image when loading it and changing the quality factor before saving the file as seen in this code snippet:
RasterCodecs _MyCodecs = new RasterCodecs();
RasterImage _SrcImage = _MyCodecs.Load(@"C:\InputImage.jpg", 200, 400, 0, RasterSizeFlags.Resample, CodecsLoadByteOrder.Bgr);
_MyCodecs.Options.Jpeg.Save.QualityFactor = 80;
_MyCodecs.Save(_SrcImage, @"C:\OutputImage.jpg", RasterImageFormat.Jpeg, 24);
Disclaimer: I’m an employee of LEAD.
Guest User9y ago
using System;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Drawing.Imaging;

using System.Linq;

///

/// Class contaning method to resize an image and save in JPEG format

///

public class ImageHandler

{

///

/// Method to resize, convert and save the image.

///

/// name="image">Bitmap image.

/// name="maxWidth">resize width.

/// name="maxHeight">resize height.

/// name="quality">quality setting value.

/// name="filePath">file path.

public void Save(Bitmap image, int maxWidth, int maxHeight, int quality, string filePath)

{

// Get the image's original width and height

int originalWidth = image.Width;

int originalHeight = image.Height;

// To preserve the aspect ratio

float ratioX = (float)maxWidth / (float)originalWidth;

float ratioY = (float)maxHeight / (float)originalHeight;

float ratio = Math.Min(ratioX, ratioY);

// New width and height based on aspect ratio

int newWidth = (int)(originalWidth * ratio);

int newHeight = (int)(originalHeight * ratio);

// Convert other formats (including CMYK) to RGB.

Bitmap newImage = new Bitmap(newWidth, newHeight, PixelFormat.Format24bppRgb);

// Draws the image in the specified size with quality mode set to HighQuality

using (Graphics graphics = Graphics.FromImage(newImage))

{

graphics.CompositingQuality = CompositingQuality.HighQuality;

graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;

graphics.SmoothingMode = SmoothingMode.HighQuality;

graphics.DrawImage(image, 0, 0, newWidth, newHeight);

}

// Get an ImageCodecInfo object that represents the JPEG codec.

ImageCodecInfo imageCodecInfo = this.GetEncoderInfo(ImageFormat.Jpeg);

// Create an Encoder object for the Quality parameter.

Encoder encoder = Encoder.Quality;

// Create an EncoderParameters object.

EncoderParameters encoderParameters = new EncoderParameters(1);

// Save the image as a JPEG file with quality level.

EncoderParameter encoderParameter = new EncoderParameter(encoder, quality);

encoderParameters.Param[0] = encoderParameter;

newImage.Save(filePath, imageCodecInfo, encoderParameters);

}

///

/// Method to get encoder infor for given image format.

///

/// name="format">Image format

/// image codec info.

private ImageCodecInfo GetEncoderInfo(ImageFormat format)

{

return ImageCodecInfo.GetImageDecoders().SingleOrDefault(c => c.FormatID == format.Guid);

}

}
Dr.Ajay Kashyap9y ago
i solve that Problem but now The Problem is image size is Increase..
Guest User9y ago
Resize Image In C#
http://www.c-sharpcorner.com/article/resize-image-in-c-sharp/

http://www.c-sharpcorner.com/blogs/resizing-image-in-c-sharp-without-losing-quality1

How To resize Image Without Crop And Padding

Resize Image In C#