I am new to photoshop. I want to make image same link below image. this image was colored before this result.
any one can tell me what should I do, for this.
As mentioned above, the image has been created in several steps, here's brief description and a screenshot of the steps
From the original - colorful or grayscale - image we have to separate the elements which we do not want halftoned - for me it's the white areas (step 1) and black borders (step 2). You may do it any way you want - Wand/magic lasso/Color selection/etc. Then, to quicker generate the halftone (note on converting to halftones below) we desaturate the image (step 3) and finally generate the halftone (step 4) via Filter / Pixelate / Color Halftone (set all the angles to 0). Later, we simply overlay the border and whites over the halftone and here we are.
Overlaying white areas may seem useless, yet in case of bigger halftone dot size it allows smoothing out the raster-jagged edges of these areas. It is not so well seen on my image, but in the one presented by you, the effect I mentioned is clearly seen in the case of the contours of ear/eye/hair (etc.).
Note: Keep in mind, that there's another way to create halftones which may be more useful for you:
Image / Mode / Grayscale
Image / Mode / Bitmap
The way I have described above is quicker, at least for the presentation purposes.
The image you reference isn't the result of a single filter. Hairs and outlines have likely been put in after the halftoning as well as eyes and ears.
Related
I took pics like these
The files generated form the camera are bmp.
Problem is i need to load them in a certain program where i noticed works only when in photoshop i go to modes -> greyscale. The images are originally indexed color or RGB Color (which i used to make some adjustments - but end results is like u see in these pictures). But when i change mode to greyscale I notice the pics changing (though not sure because i mainly use the mean value from histogram to measure various areas with the square marquee tool -the mean value changes at around 10 points, but again unsure if i should be using that one or if there is some other way to measure the average value of a color in an area). But the image should remain same since its black&white right?
I'm using createJS to build some easy game.
I have an image (white fill and black stroke) and I would change the black color to another.
Is it possible?
Thanks
The three ways to do color adjustments in EaselJS are:
Composite Operations: You can draw an image using a composite operation (such as "destination-in") to determine how pixels are laid down. This is probably not going to give you the result you want. Here is an example of a black PNG being changed to different colors using compositeOperation.
Color Filters. EaselJS has both a ColorFilter and a ColorMatrixFilter, which assist with modifying colors. The first uses parameters to multiply and add to the color and alpha channels, but is a little harder to use. The second uses a ColorMatrix to adjust hue, saturation, contrast, and brightness. This may not work for you, since changing the black pixels is kind of the opposite of color filters do.
A Custom Filter. EaselJS supports custom filters (such as the Threshold Filter in the extras folder. This is probably your best option, and might take massaging to get what you need.
Hope that sheds some light.
I'm trying to create an app with groups you can switch between. My idea was to pick the first 3 photo's of the members in the group, and lay the images over each other. Adding three images over each other is not really difficult, the difficult part for me is to make the other two images show up like a "half moon" beneath the other images. See the attached image for an example.
It isn't really a half moon. It's more like a crescent moon or lunate shape.
The principle is not a difficult one. Practice as follows:
Start with an image, roughly a square.
Make an image context the same size as the image.
Fill a circle the size of the image, roughly offset about a third of its width to the left.
Fill another circle the size of the image, roughly offset about two thirds of its width to the left, using Clear blend mode.
Extract the resulting image from the image context.
You now have the desired lunate shape:
Now use that lunate shape as a mask or clipping area for the original image:
I'm working with documents, so maintaining the the original image dimensions and subsequent dpi is important.
The aspect ratio is always maintained so the automatic fill modes and alike don't seem to have any effect.
Say I have a 300 dpi document and the user want to clear an inch border around the image. So I need an inch cropped from the image but the result needs to be the original image dimensions (2550x3300).
I have been able to achieve this effect with...
...&crop=300,300,-300,-300&margin=300,300,300,300
This works, but seems more than a little clunky. I've tried a lot of other combinations but they all seem to enlarge or reduce the image size which is undesirable in my case.
So does someone know a simpler syntax to achieve the desired result, or do I need to re-size the image then calculate and fill with a margin as I'm doing now.
Thanks
It turns out that my example requests the image in it's full size which turns out to be a special case. When I introduce a width or height into the command line things don't work very well since crop size is in respect to the original image dimensions and margin size is in respect to the result image.
Thinking about it more I abandoned the crop approach. What I really needed was a way to introduce a clipping region into the result bitmap. So I built an extension to do just that. It works well as it doesn't interfere with any of Resizer's layout calculations and the size of the returned image is whatever the height or width were specified as. Which is just what I needed. The Faces plugin has an example of introducing a clipping region.
Karlton
Cropping and re-adding 300px on each edge is best accomplished exactly the way you're doing it:
&crop=300,300,-300,-300&margin=300
What kind of improved syntax would you expect? This isn't a common operation.
Is it possible to invert the colors within a box (4 sets of coordinates) on a page from within the page's content object code?
My pages consist of simple B&W JBIG2 images and I wish to make the white black and the black white within a small box to highlight something.
As mkl suggests, you may extract the images and change their bits - this might prove to be a little bit of work however. There might be another useful approach here, specifically useful because it would work regardless of what the underlying objects are.
It is possible in PDF to add a transparent object (for example a rectangle) over all underlying objects. In your case you would create a rectangle that you put on top of the images you already have in the page stream.
If you paint this rectangle in white, set it to transparent and choose "Difference" as the transparency blending mode, the net effect should be that the colors underneath your rectangle are inverted.
From the PDF specification: "Painting with white inverts the backdrop colour; painting with black produces no change."
This may be the quickest and most painless way to accomplish what you are looking for...