How to convert a specific array of bytes to image

Question

The specific structure of array is: first number= count of bytes, second number= width, third number= height, after these are 3 numbers for RBG for all of pixels.

Can I use a class or a method in iPhone SDK to convert these bytes to UIImage? Or do I have to write a function, which draw a picture from the byte array?

NSGod · Accepted Answer · 2011-03-17 19:38:41Z

1

Look at CGImageCreate() which should allow you to create an image from data in a structured format. You can then create a UIImage from the resulting CGImage.

answered Mar 17, 2011 at 19:38

NSGod

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Comments

Vaibhav Tekam · Accepted Answer · 2011-03-17 12:28:43Z

0

How are you getting that array, from some webService or you are creating in the coding side?

You can create an object of NSData Class

NSData * imageData = [[NSData allc] initWith..];

see different methods available for the class.

Use this data object to create your image.

UIImage * image = [[UIImage alloc]initWithData:imageData];

answered Mar 17, 2011 at 12:28

Vaibhav Tekam

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4 Comments

gbaor Over a year ago

I'm getting the array from a network socket. It is in a NSMutableData and I hae to draw the picture from this.

Vaibhav Tekam Over a year ago

using the method UIImage * image = [[UIImage alloc]initWithData:imageData]; should not be a problem for you then. Have you tried it?

Codo Over a year ago

This is not going to work. UIImage:initWithData: is for image data encoded in PNG, JPEG or another supported image format. However, here we're dealing with a custom, uncompressed format.

Vaibhav Tekam Over a year ago

this was not told when the question was posted.

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