This component provides a quick look function for the latest acquired image by the instrument. There is no ability to load a prior image or a FITS file from the disk. For detailed analysis an outside application such as DS9 should be used.
The image is sent to the view by LOIS as a binary stream of data on a specific topic. The view allows some basic image manipulation and it also provides some instrument specific functions. As it can be seen below, the view is composed of several specific sections:
Image Information
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This component displays different aspects of the image sent to the application and allows you to manipulate the image as needed.
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This area simply posts information about the image and the cursor location with respect to the image.
The top row delivers information about the image itself such as the dimensions, the time it was created, and the name of the image. The analysis result displays (TODO Displays what exactly?)
The last two rows update the information as the cursor is moved to display the value of the pixel the cursor is on and the (x,y) coordinates of the cursor.
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This is an enlarged image which can be seen more clearly than the Thumbnail or Detailed Aspects can offer. The initial image when received, is displayed at a 1:1 ratio. If the image is larger than the client area, the display starts at the center of the image. The cursor location on this aspect will relate to the Pixel Matrix and Line Profiles when toggled.
Fine Movement on the Image
If your cursor is close to a desirable location but you need to get it right on a certain pixel, arrow keys will let you move the cursor one pixel at a time in the up, down, left, or right direction using the respective arrow keys.
Thumbnail Aspect
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This aspect represents the entirety of the image in a smaller, compressed form. The red box represents the viewable area on the main image view. You can center on any part of the image by clicking on the thumbnail where you want to view. This will update the main image automatically.
Detailed
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Aspect
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This aspect is a detailed view of the cursor location on the Main Image. The red-blue, inner box represents the individual pixel the cursor is on. The outer, green box represents the area the Pixel Matrix will pick up and display.
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The zoom ratio will ALWAYS remain 8:1. If you increase the ratio on the main image, it will NOT increase the ratio on the detailed aspect. |
Main Image
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This is an enlarged image which can be seen more clearly than the Thumbnail or Detailed Aspects can offer. The initial image when received, is displayed at a 1:1 ratio. If the image is larger than the client area, the display starts at the center of the image. The cursor location on this aspect will relate to the Pixel Matrix and Line Profiles when toggled.
Fine Movement on the Image
If your cursor is close to a desirable location but you need to get it right on a certain pixel, arrow keys will let you move the cursor one pixel at a time in the up, down, left, or right direction using the respective arrow keys.
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Toolbar Menu
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Sometimes you need to make adjustments to the image to suit your purposes. Some of these adjustments may be as simple as zooming in or out and some may be as complex as changing the color scale or the way the pixels are scaled on the image. All of the tools you need are located directly above the Thumbnail and Detailed Aspects.
Color
Scale This provides a drop-down menu of the different color scales that can be used as well as an invert-color option.
Value Scale
TODO: Don't quite understand how to explain this
Brightness Control
Adjusts the brightness of the image. The left arrow decreases the brightness and the right arrow increases the brightness.
Contrast Control
Adjusts the contrast of the image. The left arrow will decrease the contrast and the right arrow increases the contrast.
Image Scale
The 4 controls with the magnifying glass allow you to control the ratio of the image to what is displayed. The magnifying glass with a plus or minus sign will let you zoom in or out of the image respectively. The third magnifying glass from the left will reset the ratio back to 1:1 and the last magnifying glass will fit the image to the client area.
Rotate Image
The two buttons on the far right allow you to rotate the image clockwise or counter-clockwise 90 degrees at a time.