Dear James,
Sorry for disturbing you once more.
I modified the statement as follows:
R, G, B = 0, 1, 2
Image1 = img.split()
r1, g1, b1 = img.split()
r2, g2, b2 = img1.split()
outR = ImageMath.eval("(a + b)", a=r1, b=r2)
outG = ImageMath.eval("(a + b)", a=g1, b=g2)
outB = ImageMath.eval("(a + b)", a=b1, b=b2)
Image1[R].paste(outR, None)
Image1[G].paste(outG, None)
Image1[B].paste(outB, None)
out = Image.merge(img.mode, Image1)
But, now I started getting error, in the 1st split line.
It says"Value Error: Needs more than one value to unpack"
Can you tell me what is causing this?
With Regards,
Bishwarup
On Mon, Oct 19, 2009 at 6:06 PM, James Tedrick <[email protected]> wrote:
> take a look at the split syntax- it assigns the band to a set of
> single-band images.
>
> this should work:
> r1, g1, b1 = img1.split()
> r2, g2, b2 = img2.split()
>
> outR = ImageMath.eval("a+b", a=r1, b=r2)
>
> etc
>
>
> On Mon, Oct 19, 2009 at 7:54 AM, Bishwarup Banerjee <
> [email protected]> wrote:
>
>> Dear James,
>> I tried the following code
>>
>> R, G, B = 0, 1, 2
>> Image1 = img.split()
>> Image2 = img1.split()
>> outR = ImageMath.eval("(a + b)", a=Image1[R], b=Image2[R])
>> outG = ImageMath.eval("(a + b)", a=Image1[G], b=Image2[G])
>> outB = ImageMath.eval("(a + b)", a=Image1[B], b=Image2[B])
>>
>> Image1[R].paste(outR, None)
>> Image1[G].paste(outG, None)
>> Image1[B].paste(outB, None)
>>
>> out = Image.merge(img.mode, Image1)
>>
>> I am using this code for adding the values of pixels from two different
>> images. But again I am getting the same error, as mentioned in my previous
>> mail. Only time I am not getting the error is when i am converting the
>> images to "L", before performing eval.
>> Please help me out, I dont know where I am wrong.
>>
>> With Warm Regards,
>> Bishwarup
>>
>>
>> On Mon, Oct 19, 2009 at 4:49 PM, James Tedrick <[email protected]> wrote:
>>
>>> use (image).split out the multi-band into the single bands and
>>> Image.merge again afterword- take a look at
>>> http://www.pythonware.com/library/pil/handbook/introduction.htm under
>>> "Cutting, pasting..."
>>>
>>> james
>>>
>>>
>>> On Mon, Oct 19, 2009 at 6:02 AM, Bishwarup Banerjee <
>>> [email protected]> wrote:
>>>
>>>> Dear James,
>>>>
>>>> Thank you very much for your reply. I tried that but i get the following
>>>> error
>>>>
>>>> ValueError, unsupported mode, P
>>>> I am trying to find a solution, it may be due to multi band image. In
>>>> the mean time If you have solution to this problem please reply back.
>>>>
>>>> With Warm Regards,
>>>> Bishwarup
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Fri, Oct 16, 2009 at 6:23 PM, James <[email protected]> wrote:
>>>>
>>>>>
>>>>> The ImageMath Module should take care of it (works on single-band
>>>>> images, which is what it sounds like you've got):
>>>>>
>>>>> (slight mod of demo)
>>>>> import Image, ImageMath
>>>>>
>>>>> im1 = Image.open("image1.jpg")
>>>>> im2 = Image.open("image2.jpg")
>>>>>
>>>>> out = ImageMath.eval("a + b", a=im1, b=im2)
>>>>> out.save("result.png")
>>>>>
>>>>> james
>>>>>
>>>>> On Oct 16, 3:32 am, Bishwarup <[email protected]> wrote:
>>>>> > Dear All,
>>>>> >
>>>>> > I am new to PIL and python. I am in the process of developing a
>>>>> plugin
>>>>> > for image processing. In this I need to modify each pixel of an
>>>>> image,
>>>>> > then combine the images to form a new image. The pixel values of the
>>>>> > new image will be summation of the pixel values of all the images at
>>>>> > that particular location.
>>>>> > Can this be achieved through PIl and python, If yes then how?
>>>>> > I am using PIL 1.1.6, python 2.5 and windows
>>>>> > Thank you in advance.
>>>>> > With Regards
>>>>>
>>>>
>>>>
>>>
>>
>
