Dialog in which you can improve selection actually layer mask and remove all selection or layer mask imperfections using several commands like feather,smooth, contrarst..
Softening, you can soften edges of selection using Feather command from select > Modify > Feather or From Refine Edge dialog Select > Refine Edge. Feather also appears on Properties panel in Photoshop CS6 or Masks panel in previous versions to soften edges of pixel based or vector mask (you must select mask on Layers panel first).
Sharpening is increasing contrast selectively only at edges of objects on image.
Photoshop.
the masking tool
Sharpening is increasing contrast selectively only at edges of objects on image.
You can Anti Alias either fonts or vectors shapes only ... if you bring in your own image, let's say by copy and paste, your best bet would be to blur the edges. See: "Photoshop Feathered Edges" in google search.
To isolate a color in Photoshop, you can use the "Select" menu and choose "Color Range." Then, click on the color you want to isolate in the image. Adjust the settings to refine the selection, and then use a layer mask or a new layer to isolate the color.
The feather setting blurs the edges of a selection, softening the transition between the selected and unselected areas.
To select only one color in Photoshop, you can use the "Color Range" tool. First, open your image in Photoshop. Then, go to the "Select" menu and choose "Color Range." Click on the color you want to select in the image. Adjust the settings to refine the selection if needed. Finally, click "OK" to apply the selection of the chosen color.
Vector graphics, constructed from geometric primitives.
To crop one layer in Photoshop for the desired composition, select the layer you want to crop, then use the crop tool to adjust the size and position of the layer within the canvas. You can also use the transform tool to further refine the cropping.
To select all areas of a specific color in Photoshop, you can use the Magic Wand tool. Simply click on the Magic Wand tool in the toolbar, then click on the area of the color you want to select. You can adjust the tolerance level to refine the selection if needed.