A computer expert has admitted altering pornographic images of women to make them look like girls.
Stafford Sven Tudor-Miles, 38, admitted five counts of attempting to make indecent, pseudo-photographs of children, at Teesside Crown Court.
He also admitted two further charges of possessing indecent pseudo-photographs and breaching a sex offenders' order.
Tudor-Miles, of Bankfields Road, Eston, near Middlesbrough, Teesside, will be sentenced on 8 September.
The pleas were entered on Wednesday after Tudor-Miles failed to have the charges thrown out of court.
At an earlier hearing, the court was told he used his technical know-how to digitally reduce the breast sizes and alter the genitals of nude women, making them look like girls.
He added school uniforms to some images using graphics software. Cleveland Police raided his home and the charges relate to late January and early February.
The court heard that Tudor-Miles had asked his General Practitioner for medication to "reduce his urges" and had sought psychiatric help.
Judge Peter Fox QC, the Recorder of Middlesbrough, granted him conditional bail while a pre-sentence report was prepared.
The judge told Tudor-Miles: "You should be prepared, at least, for a prison sentence."
Ray Savage, a forensic computer expert for Cleveland Police, said: "This is quite unusual.
"The work taken in carrying out this process is quite disturbing.
"Some of the images are very convincing, while some are crude and wouldn't fool anybody, other than to please the eye of the person who created it."