Metodología del trabajo
1. Situación actual del mantenimiento SI 6,699
RGB-Studio The RGB-Studio consists of a group of commands especially developed for editing RGB images. RGB-Studio commands are located in the Oper menu.
You use the RGB Studio to:
•
filter color images, e. g., using the following filters: Gamma, Hue, Saturation, In- tensity, Contrast, Sharpen, Average, Remove Noise, Oilify, Posterize, Mosaic and many others;•
convert color images into 8-bit images using different color palettes;•
edit color palettes;•
rotate or clip color images;•
superimpose color images, or add a watermark;•
break down color images into their color components using various color mod- els;•
colorize color images using one color;•
assemble gray-value images as color components of one of the color models into true-color images;•
define overlay objects of any shape and color;•
clip, fill and copy image areas of any shape.Applying multiple filters
When working with the RGB Studio, multiple filter operations can be executed suc- cessively without having to select the RGB Studio > Apply Filters... command each time. Each operation is applied to the resulting image of the previous operation and then placed in a stack. This stack consists of all the filter operations in their order of
Processing images Filtering RGB images - Step-by-step
109
application on the image. This stack processing is reversible, i.e., one or more image operations can be reversed successively at any time if you’re not happy with the re- sults and thus wish to apply other filter operations.
Step-by-step
Using multiple RGB-Studio filters
You wish to improve the appearance of an image. To do so, you want to conduct gamma correction, increasing image sharpness and improving image contrast.
1) Activate the image buffer with the original image.
•
Simply leftclick on the image buffer that has the original image in it.2) Set the destination image buffer.
"
Your image analysis program will propose a destination image buffer. To alter the proposed destination image buffer, drag the desired image buffer - while pressing the left mouse button - from the image manager onto the operands box.3) Select the Oper > RGB Studio > Apply Filters... command.
"
The image window will be minimized. A separate preview window showing the image in the active image buffer will appear."
The Apply Filters dialog box will be opened.4) Select the Gamma filter in the Filter List.
"
The Value field will appear in the Parameter group.filter function
Gamma modifies pixel-intensity values via the gamma function. Non-linearities of camera and monitor can thus be corrected.
Hue modifies the pixel-color value H. Saturation modifies the pixel-saturation value S.
Intensity modifies the pixel-intensity value I. Contrast increases or reduces image contrast. Histocon-
trast
increases or reduces image contrast. Mean brightness is determined via the histogram to adjust image contrast.
Sharpen increases or lessens image sharpness. Remove
Noise
substitutes the central color of neighboring pixels for the color value of each pixel.
Average substitutes the average color of neighboring pixels for the color value of each pixel.
Solarize an imitation of the effect on photographic film when coincidentally exposed to light briefly.
Oilify gives an image the appearance of an oil painting. Posterize makes an image look like a poster.
Mosaic adds a mosaic-like pattern to an image’s appearance.
Emboss shows objects in relief. Dark objects appear raised, light ones as depres- sions.
Noisify adds random pixels to an images, i.e., noise. Noise values can be added for all color channels (red, green, blue) or just for one.
Histoequal- ize
linearizes the number of pixels per intensity value. This accentuates details in dark image areas.
Stretch In- tensity
increases image contrast.
Invert inverts pixel color values. The resulting image thus looks like a photo nega- tive.
Processing images
Filtering RGB images - Step-by-step
110
•
Use the arrow buttons next to the Value field to set the desired γconstant. The value range is 0.1 to 100.0.•
Any alteration of the γconstant is applied to the image immediately and shown in the preview window. Keep making adjustments until satisfied with the results.5) To increase image sharpness select the Sharpen filter in the Filter List.
"
The Value field will appear in the Parameter group.6) Use the arrow buttons next to the Value field to set the sharpness desired.
•
The value range is -1000 to +1000 Promille."
Any alteration of sharpness is applied to the image immediately and shown in the preview window. Keep making adjustments until satisfied with the re- sults.7) To increase image contrast select the Stretch Intensity filter in the Filter List.
8) Click the Execute button.
"
The filter will be applied to the image and the results shown in the preview window.•
To reverse the Stretch Intensity filter operation use the Back button - if im- age contrast is still too weak or perhaps even too great. Then apply theContrast or Histocontrast filters. You set image contrast yourself when us- ing these.
9) Apply other filters until you have altered the image as desired.
10) Click on OK to have the resulting image written into the destination image buffer.
"
The preview window and dialog box will be closed."
The resulting image will be shown in the active viewport. Images are edited in aseparate preview win- dow when using the RGB Studio. All opera- tions applied to the im- age are shown in this window immediately. All overlay information and/ or automatic scale bar do not appear while you define filters.