How to covert binary to .png image

Kuchana Rajendra Prasad

8y1.1k

Hi,

I am looking to convert to .png from binary formate image.

please help me on this case.

i am getting input image as in binary formate and i need to convet it to .png formate.

i am using this in webapi service.

thanks

2 Replies

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Maen Badwan8y ago
If you mean you have raw image data and you want to convert it into PNG format, and you already know the properties of this image (such as Width, height, bits per pixel, etc.) you can try using the RasterCodecs class from LEADTOOLS .NET SDK, which provides the ability to load and save different images formats including PNG, JPEG, GIF, RAW, etc.
You need first to load your raw image using the RasterCodecs.Load() method into a RasterImage object and handle the RasterCodecs.LoadInformation() event, which is triggered when calling the Load method.
Within the event's handler, provide the information of the Raw image’s data and then save the loaded RasterImage object into PNG format using the RasterCodecs.Save() method. The summarized code will be something as follows:
RasterCodecs codecs = new RasterCodecs();

// First subscribe to the LoadInformation event so we can set the image information
codecs.LoadInformation += new EventHandler(codecs_LoadInformation);

// Load the image
RasterImage image = codecs.Load(rawFileName);

// Unsubscribe from the event
codecs.LoadInformation -= new EventHandler(codecs_LoadInformation);

// save it as bmp for testing
codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Image1_raw.png"), RasterImageFormat.Png, 24);
You can find full sample code here:
https://www.leadtools.com/help/leadtools/v20/dh/co/rastercodecs-loadinformation.html
Jenith Thakkar8y ago
private void byteArrayToImage(byte[] byteArrayIn)
{
System.Drawing.Image newImage;

string strFileName = GetTempFolderName() + "yourfilename.png";
if (byteArrayIn != null)
{
using (MemoryStream stream = new MemoryStream(byteArrayIn))
{
newImage = System.Drawing.Image.FromStream(stream);

newImage.Save(strFileName);

img.Attributes.Add("src", strFileName);
}

lblMessage.Text = "The image conversion was successful.";
}
else
{
Response.Write("No image data found!");
}
}