How can I use an image for inputting information?

I have set up a grid of 10x10 blocks to rise to different heights depending on integer values from an array, ranging from 0 to 6, where the code would multiply the integer by 50 and raise the block by that many units. It is working well so far, however I have found that inputting the numbers manually in a 100-entry array for each level is very tedious.

I’m certain there is a way to use a 10x10 image to input the values into the array, each number represented by a pixel’s color or a shade between white and black. I haven’t found a way to do so on my own, nor have I found any tutorials or questions that may help me find a way. Has anyone come across a way to use images for inputting information other than for textures?

You can bake your array from an image (but only within the editor) by using this code

    UTexture2D* SourceTexture = ...some texture...
	check(SourceTexture);
	FTextureSource& SourceData = SourceTexture->Source;
	if (SourceData.GetFormat() == TSF_BGRA8) // you can also parse other formats if you need
	{
		uint32 BytesPerPixel = SourceData.GetBytesPerPixel();
                uint32 RowStride = SourceData.GetSizeX();
                uint8* ImageData = SourceData.LockMip(0);
                for ( ...walk thru X and Y as you want... )
                {
		      uint8* PixelData = ImageData + (X + Y * RowStride) * BytesPerPixel;
                      ...do something with given pixel data...
                      uint8 B = PixelData[0];
                      uint8 G = PixelData[0];
                      uint8 R = PixelData[0];
                      uint8 A = PixelData[0];
                }
		SourceData.UnlockMip(0);
	}

In a packaged game SourceTexture->Source field might be ommited or empty.