Options Window

Customize your search is carried out in the options window. Open it may be either the main window using the Options button

or select the Search - Options item from the Main Menu. In this window, there are three groups of settings: check options, search options and additional options. Each of these groups is located on the corresponding tab.

Check Options

On the Check tag

there are following settings:

  • Check on defect - option specifies whether you want to check the images for defects. By default, this option is enabled.

  • Search image dupls - determines the need to look for duplicate images. By default it is enabled.

  • Search rotated and mirror image dupls - Enabling this option allows you to search rotated and mirrored duplicate images. It has to do more comparisons; therefore search is slowed down eight times. By default, this option is disabled.

  • Control image size - if this options is enabled then the program take into account the size of pictures. For example, the picture sizes 1024x768 and 800x600 will be different, even if they are to be shown the same thing. By default, this option is disabled.

  • Control image type - if this options is enabled then the program take into account the type of image in comparison. For example, images in PNG and GIF formats will be different, regardless of their contents. The default option is disabled.

  • Control image width/height ratio - when you turn on this option, the program checks the ratio of width and height of images. For example, this allows us not to compare the square and rectangular images among themselves, which greatly accelerates the search. The degree of difference ratio of the width and height of images is governed by the parameter Image width/height ratio precision, located on the Advanced tab options (see below). By default, this option is enabled.

  • Threshold difference - when images are compared between each other, the standard deviation of brightness for each pair of images is calculated. If this difference is below the value determined by this parameter, then the pictures are duplicates. When setting this option at a low level, the program can not detect some of the duplicates. If it is equal to zero then program will be able to find only fully identical images. If he set too high, then increase the likelihood of false positives. Also worth noting that the increase in this parameter leads to a slower speed of the algorithm and vice versa. It can vary in the range from 0 to 15%. By default, this parameter is equal to 5%.

  • Minimal image width/height - sets the minimum width/height of images is necessary that they will be checked for the presence of duplicates. This option allows you to exclude from the search too small images. The default setting is 64.

Note that necessarily must be included either option Check on defect, either option Search image dupls.

Search Options

On the Search tag

there are following settings:

  • Search types:

    • BMP - this option specifies whether you want to search for BMP (BitMaP) pictures. They usually have an extension *.bmp, *.dib or *.rle. By default, this option is enabled.

    • GIF - this option specifies whether you want to search for GIF (Graphics Interchange Format) pictures. They usually have an extension *.gif. By default, this option is enabled.

    • JPEG - this option specifies whether you want to search for JPEG (Joint Photographic Experts Group) pictures. They usually have an extension *.jpeg, *.jfif, *.jpg, *.jpe, *.jiff, *.jif, *.j, *.jng or *.jff. By default, this option is enabled.

    • PNG - this option specifies whether you want to search for PNG (Portable Network Graphics) pictures. They usually have an extension *.png. By default, this option is enabled.

    • TIFF - this option specifies whether you want to search for TIFF (Tagged Image File Format) pictures. They usually have an extension *.tif or *.tiff. By default, this option is enabled.

    • EMF - this option specifies whether you want to search for EMF(Enhanced MetaFile) pictures. They usually have an extension *.emf or *.emz. By default, this option is enabled.

    • WMF - this option specifies whether you want to search for WMF(Windows MetaFile) pictures. They usually have an extension *.wmf. By default, this option is enabled.

    • EXIF - this option specifies whether you want to search for EXIF(EXchangeable Image File) pictures. They usually have an extension *.exif. By default, this option is enabled.

    • ICON - this option specifies whether you want to search for ICON(Windows ICON image format) pictures. They usually have an extension *.icon, *.ico or *.icn. By default, this option is enabled.

    Note: Be sure to include into search at least one of the above types.

  • Search system folders/files - the option specifies whether you want to search for pictures in the system directories. By default, this option is disabled.

  • Search hidden folders/files - the option specifies whether you want to search for pictures in the hidden directories. By default, this option is disabled.

  • Search in subdirectories - the option specifies whether you want to search for pictures in all subdirectories also. By default, this option is enabled.

Advanced options

On the Advanced tag

there are following settings:

  • Delete to recycle bin - when you turn on this option, files will be removed in the recycle bin. Otherwise, they will be deleted permanently. By default, this option is enabled.

  • Remember mistakes - option specifies whether you want to use when searching a database of false positives. So the user during the processing of search results can mark false positives, for example, using the Mark current result as a mistake button of the íà Preview Panel. Then, when re-search more, these results will not be shown. By default, this option is enabled.

  • Image width/height ration precision - option determines the accuracy which must be respected by the ratio of width/height of the compared images. It can be 1/8, 1/16, 1/32 or 1/64. The default value is 1/32.

  • Compare threads count - option specifies the number of threads of comparison, which are created when searching for duplicates. It can take values Auto (number of threads is determined by the program), 1, 2, 3 or 4. The default value is Auto.

  • Load thread count - option specifies the number of threads of image loading, which are created when searching. It can take values Auto (number of threads is determined by the program), 1, 2, 3 or 4. The default value is Auto.

  • Normalized image size - this parameter can be described as follows: because images can be absolutely arbitrary size, then the correct comparison of their need to lead to a common denominator. To do this, all images are scaled to the same size and converted into 8-bit gray. Then have these normalized images are compared with each other and stored in a database. This option determines the size of these images. The more normalized the size of images, the higher the accuracy of the program. Adverse effects of this increase will be decrease of speed of the program, and large requirements to the memory and the free disk space (to store the database of previously scanned images). Can take the values 16x16, 32x32, 48x48 or 64x64. The default value is 32õ32.

Note: most users it is better not to change the settings on this tab.